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    • 专利摘要:
    A system and method to manage direction of an ionizing radiation toward an exposed subject is provided. The system can perform receiving a request from a customer to establish an internet connection to communicate between a remote office and the system directing the ionizing radiation toward the exposed subject; automatically communicating a status information and individual dose data associated with an event where direction of ionizing radiation that exceeds a threshold; automatically creating and communicating a report via the internet connection to the customer. The report can include an indication of the event where direction of ionizing radiation exceeds the threshold and a comparison of the individual radiation dose data and an individual status operation of system at time of the event relative to a benchmark defined by radiation dose data and status information acquired from a population of other systems.
    公开号:NL2004366A
    申请号:NL2004366
    申请日:2010-03-09
    公开日:2010-09-21
    发明作者:Guillaume Bourdeaux；Jennifer Esposito；David Ysseldyke；Barry Belanger
    申请人:Gen Electric；
    IPC主号:
    专利说明:

    SYSTEM AND METHOD OF REMOTE REPORTING OF RADIATION DOSEUSAGE IN IMAGE ACQUISITION
    BACKGROUND
    [0001] The subject matter of this application generally relates to ionizing radiation(e.g., x-rays), and more specifically to a system and method to manage direction ofionizing radiation dose toward an exposed subject.
    [0002] Employment of the use of ionizing radiation (e.g., x-ray) is well known in thetherapy or image acquisition of an exposed subject. Fields of application of ionizingradiation is common in the medical field (e.g., fluoroscopic, computed tomography (CT),x-ray, ablation of tissue, etc.) and security screening (e.g., airport baggage inspection).For example, radiological image acquisition generally includes directing a stream ofionizing radiation at the exposed subject, and measuring the attenuation of the ionizingradiation passing therethrough.
    [0003] One concern with use of ionizing radiation include an increased likelihood ofharm or injury associated with radiation-induced injury to the tissue of the exposedsubject. These deterministic risks can include skin reddening, rashes, bums, or hair loss.In fact, use of ionizing radiation is well-known in chemo-therapy or the ablation ofdiseased tissue. A variable that affects a likelihood of causing radiation-induced injury totissue of an exposed subject includes a dose of radiation absorbed by the exposed subject.Variables that affect a dose of radiation absorbed by the exposed subject include a rate ofdelivery of radiation to the exposed subject, a time of exposure of radiation to theexposed subject, a fraction of radiation absorbed by the exposed subject, age or othercharacteristics of the exposed subject, and a location of exposure of radiation to theexposed subject. Another concern with use of ionizing radiation includes an increasedlikelihood of causing stochastic effects (e.g., radiation-induced cancers) to the exposedsubject.
    BRIEF DESCRIPTION OF CLAIMED SUBJECT MATTER
    [0004] In view of the above concerns associated with use of ionizing radiation, thereis a need for improved access to data or increased knowledge to manage direction ofradiation dose toward the exposed subject (e.g., patient) for different applications (e.g.,fluoroscopic imaging, x-ray imaging, CT imaging of various exposed areas (e.g., chest,arms, legs, etc.) of an exposed subject). This improved access to data can benefit theestablishment of standard operating procedures and protocols in the use of ionizingradiation to perform various tasks, as well as benefit the measurement and evaluation ofan impact of each procedure’s protocol in the likelihood for deterministic or stochasticeffects associated with exposure to ionizing radiation relative to the characteristics ofexposed subjects. The above-described needs and benefits are addressed by theembodiments of the subject matter described herein.
    [0005] One embodiment of the subject matter includes a method to manage directionof an ionizing radiation toward an exposed subject, comprising the steps of receiving arequest from a customer to establish an internet connection to communicate between aremote office and the system directing the ionizing radiation toward the exposed subject;automatically communicating a status information and individual dose data associatedwith an event where direction of ionizing radiation that exceeds a threshold;automatically creating and communicating a report via the internet connection to thecustomer, the report including an indication of the event where direction of ionizingradiation exceeds the threshold and a comparison of the individual radiation dose dataand an individual status operation of system at time of the event relative to a benchmarkdefined by radiation dose data and status information acquired from a population of othersystems that direct ionizing radiation and communicate data to the remote office.
    [0006] Another embodiment of the subject matter includes A computer readablemedium including a plurality of program instructions for execution by a processor toperform the steps of: receiving a request from a customer to establish an internetconnection to communicate between a remote office and the system directing the ionizingradiation toward the exposed subject; automatically communicating a status information and individual dose data associated with an event where direction of ionizing radiationthat exceeds a threshold; automatically creating and communicating a report via theinternet connection to the customer, the report including an indication of the event wheredirection of ionizing radiation exceeds the threshold and a comparison of the individualradiation dose data and an individual status operation of system at time of the eventrelative to a benchmark defined by radiation dose data and status information acquiredfrom a population of other systems that direct ionizing radiation and communicate data tothe remote office.
    [0007] Systems and methods of varying scope are described herein. In addition tothe aspects and advantages described in this summary, further aspects and advantageswill become apparent by reference to the drawings and with reference to the detaileddescription that follows.
    BRIEF DESCRIPTION OF THE DRAWINGS
    [0008] Fig. 1 shows a schematic diagram of an embodiment of a system to managedirection or delivery of ionizing radiation dose toward an exposed subject.
    [0009] Fig. 2 shows a schematic diagram of a method of operating the system tomanage direction or delivery of ionizing radiation toward an exposed subject.
    [0010] Fig. 3 shows an embodiment of an illustration of a number of examinations orimage acquisitions or scans performed by the imaging systeml30 and a tracked durationthereof over a period of time, generated by the system of Fig. 1.
    [0011] Fig. 4 shows an embodiment of an illustration of a duration per protocolemploying direction of ionizing radiation to the exposed subject and comparison ofperformance of different protocols relative to one another, generated by the system ofFig. 1.
    [0012] Fig. 5 shows an embodiment of an illustration of measured radiation dosedirected to the exposed subject and cumulative percentile (%) for comparison relative totype of protocol and image acquisition mode, generated by the system of Fig. 1.
    [0013] Fig. 6 shows an embodiment of an illustration of a distribution of a number ofevents that exceed a certain grouping or threshold range of radiation dose directed to theexposed subject, generated by the system of Fig. 1.
    [0014] Fig. 7 shows an embodiment of an illustration of a distribution of radiationdose directed to the exposed subject relative to variance in the source to image distance(SID) of the ionizing radiation system, generated by the system of Fig. 1.
    [0015] Fig. 8 shows an embodiment of an illustration of a distribution of SID for anindividual imaging system relative to a benchmark defined by data acquired from one ormore similar types of imaging systems, similar protocols of image acquisition, or similarmodes of image acquisition or combination thereof, generated by the system of Fig. 1.
    [0016] Fig. 9 shows an embodiment of an illustration of an incident map thatcorrelates dose level and location of the direction of an above-threshold radiation directedto an exposed subject relative to the geometry of the gantry in support of the ionizingradiation source, generated by the system of Fig. 1.
    DETAILED DESRIPTION
    [0017] In the following detailed description, reference is made to the accompanyingdrawings that form a part hereof, and in which is shown by way of illustration specificembodiments, which may be practiced. These embodiments are described in sufficientdetail to enable those skilled in the art to practice the embodiments, and it is to beunderstood that other embodiments may be utilized and that logical, mechanical,electrical and other changes may be made without departing from the scope of the embodiments. The following detailed description is, therefore, not to be taken in alimiting sense.
    [0018] Fig. 1 illustrates one embodiment of a management system 100 to remotelymonitor and report usage of radiation dose in acquisition of medical images or otherprotocol involving direction of ionizing radiation dose toward an exposed subject 105.The system 100 can generally include a controller 110 located at a remote workstation oroffice 112 having a server 115 in communication via an internet or broadband or wirelessconnection 118 with an ionizing radiation generating or emitting system or device 120.Remote office 112 as used herein generally refers to a location off-site of the facility orentity or address of the location of the customer. Yet, an embodiment of the system 100can include one or more portions located at the customer and is not limiting on thesubject matter.
    [0019] One example of the ionizing radiation system 120 includes a radiation source125 (c.g., x-ray tube assembly to generate x-rays) supported on a gantry 128 of aradiological imaging system 130. Examples of the radiological imaging system 130generally include an x-ray machine, computed tomography (CT), a fluoroscopic imagingsystem, etc. having the radiation source 125 projecting abeam of ionizing radiation (e.g.,x-rays) 135 through the exposed subject 105 to be received at a detector 140 in aconventional manner. The ionizing radiation can be attenuated with passing throughexposed subject 105, until impinging upon the detector 140. The detector 140 cantranslate the attenuation of ionizing radiation to generate the image or image framesillustrative of a region of interest of the exposed subject 105. An example of theradiological imaging system 130 can also include a software product or package operableto combine a series of acquired images to create the reconstructed three-dimensionalimage. An example of the software product is INNOVA® 3D as manufactured byGENERAL ELECTRIC®. The software product can also operable to measure a volume,a diameter, and a general morphology of a vessel (e.g., vein, artery, etc.) or otheranatomical structures.
    [0020] An embodiment of the system 100 can generally include the controller 110 in communication via the internet connection 118 to acquire data from the radiation source125 or radiological imaging system 130. One embodiment of the system 100 includes asoftware product such as INSITE® as manufactured by GENERAL ELECTRICCOMPANY®or INNERVISION PLUS as manufactured by TOSHIBA® to establish theconnection 118 between the ionizing radiation system 130 and the controller 100 at theremote office 112.
    [0021 ] Although the controller 110 can be described at the remote office 112, it should be understood that the controller 110 can otherwise be located integrated with oradjacent to the system 130 directing of ionizing radiation dose toward an exposed subject105.
    [0022] An embodiment of the controller 110 can be generally configured to processand analyze the acquired data (e.g. status information). An embodiment of the controller110 generally includes a processor 150 in communication with a memory 155. Thememory 155 can generally include a computer readable storage medium operable toreceive and store computer readable program instructions for execution by the processor150. The memory 155 is also generally operable to store acquired data communicated bythe radiation source 125 or imaging system 130 or from other sources 170 (e.g., MRIsystems, PET imaging system, picture archival system (PACS), etc.). The type ofmemory 155 can include disk storage, tape drive, random access memory (RAM), read¬only memory (ROM), flash memory, compact disk (CD), digital versatile disks (DVDs),magnetic cassettes, magnetic tape, magnetic disk storage, or any other medium operableto be used to store computer readable instructions.
    [0023] The controller 110 is also in communication with an input device 175 and anoutput device 180. An embodiment of the input 175 can include a keyboard, userinterface with touch-screen capability, mouse device, etc. operable to receive instructionsor data from a user of the system 100. An embodiment of the output device 180 can include a monitor, audible or visual alarms, etc. operable to illustrate output from thesystem 100 to the user.
    [0024] Having described the general construction of the system 100, the following isa description of a method 200 of operating the system 100 in management of delivery ordirection of ionizing radiation to the exposed subject 105. It should be understood thatthe foregoing sequence of acts or steps comprising the method 200 can vary, that themethod 200 may not include each every act or step in the following description, and themethod 200 can include additional acts or steps not disclosed in the followingdescription. One or more of the following acts or steps comprising the method 200 canbe represented as computer-readable programmable instructions for storage in thememory or on a portable computer readable medium 155 and for execution by theprocessor 150 of the controller 110,
    [0025] Assume for sake of example that an exposed subject 105 is a patient and theionizing radiation system 130 includes a computed tomography (CT) imaging systemoperable to perform image acquisition.
    [0026] Step 205 includes receiving a request 208 to establish a broadbandconnection 118 (e.g., internet) between the radiological imaging system 130 and theremoter workstation 112(e.g., remote office). The format of the request 208 can be anelectronic message (e.g., email) over the internet, electronic communication over theinternet or broadband connection 118, electronic communication via a webpage, etc. Anembodiment of step 205 can include establishing a connection 118 via INSITE® productas manufactured by GENERAL ELECTRIC COMPANY®. Step 210 includes acquiringan upper threshold of radiation dose to direct from the radiological imaging system to thepatient. One embodiment of acquiring the upper threshold can be from a user of theradiological imaging system 130 and can be communicated via the broadband connection118. Yet, the mode of communicating (e.g., telephone, electronic mail, etc.) the upperthreshold can vary. Step 215 includes directing or delivering the beam or stream ofionizing radiation 135 through the exposed subject 105.
    [0027] Step 215 includes data associated with performing image acquisition on thepatient 105. An embodiment of step 215 includes acquiring a protocol or task 216 (SeeFig. 5) of image acquisition to perform on the patient 105, a location 218 (e.g.,anatomical region) of image acquisition on the patient 105, etc.
    [0028] Step 220 includes acquiring a dose or dose rate of radiation (e.g., absorbeddose in Gray (Gy), cumulative air kerma with regards to fixed reference position withregards to the interventional reference point at a fixed distance from the isocenter of theimaging system 130, equivalent dose in sievert (Sv), effective dose relative to a tissueweighting factor, Computed Tomography Dose Index (CTDI), weighted CTDI, volumeCTDT, multiple scan average dose (MSAD), dose length product (DLP), etc.) directed bythe individual imaging system 130 in acquisition of images of the patient 105, a patientposition relative to the imaging system 130 or radiation source 125, a distance betweenthe radiation source 125(e.g., x-ray tube assembly focal spot where the electron beam hitsthe anode target) to the scintillator of the flat panel detector) (also referred to as source toimage distance (SID)) 222, a comparison of the directed dose relative to the acquiredupper dose threshold, a measure of radiation dose directed per SID, a cumulative dosedirected to the patient for each SID or SID grouping, details of the status information(e.g., acquisition mode, positioning of radiation source 125 and/or scanner/detector 140 inrelation in time to direct radiation dose or cumulative dose, frame rate, auto exposurepreference, detail level of image data, total number of runs or scans, total scan time orduration of image acquisition, details associated with calibration (e.g., calibration date,etc.) of the imaging system 130, and total radiation dose directed to the patient 105).
    [0029] Step 220 can also include acquiring data (e.g., calibration status, dates, etc.)associated with calibration of the individual imaging system 130. Step 220 can alsoinclude acquiring status information associated with operation of the imaging system 130,including error messages, alerts, and other parameters, relative to manufacturerspecifications.
    [0030] Step 225 includes communicating a portion or all of the acquired datadescribed under step 220 to the remote office or station 112. One embodiment of step225 includes communicating the portion or all of the acquired data via the broadbandconnection 118. Yet, the acquired data can be communication over other modes ofcommunication (e.g., wireless, telephone, broadband, attached files sent via electronicmail, etc. or combination). Step 225 can be performed in general real-time basis, on abatch basis, or periodically as predetermined by either the user of the imaging system 130or the remote office 112.
    [0031 ] One embodiment of step 225 can include communication of a portion or allof the acquired data described in step 220 with respect to an individual imaging system130 in response to detecting an exceedance of the dose threshold (e.g., cumulative dosethreshold, etc.).
    [0032] Step 230 includes analyzing the acquired data from the individual imagingsystem 130. One embodiment of step 230 includes compared one or more types orparameters represented by the acquired data relative to a threshold. One embodiment ofthe threshold can be determined relative to a predetermined value (e.g., regulation) forradiation dose directed to the exposed subject 105. Another embodiment of step 230 caninclude grouping or categorizing the acquired data or characteristics of the individualimaging system 130 for comparison to acquired data from one or more other similarimaging systems 170 or similar procedures/tasks/protocol of image acquisition orcombination thereof.
    [0033] Step 235 includes generating a report 240 illustrative of the above-describedanalyses performed on the acquired data for illustration to the user at a display 245 of auser workstation or of the individual imaging system 130. One embodiment of theabove-described report 240 can include graphic representations of the acquired data instep 220 in comparison relative to itself or relative to one or more atypical imagingsystems in the population of imaging systems 170 that the remote office or station 112acquires data from.
    [0034] Referring to Fig. 3, an example of the report 240 can include an illustration305 (e.g., bar graph) of a number of examinations or image acquisitions or scansperformed by the imaging systeml 30 and a tracked duration thereof over a period of time(e.g., per user input or standard periodic reporting period (e.g., monthly)).
    [0035] Referring to Fig. 4, an example of the report 240 can include an illustration405 (e.g., graphic pie chart) indicative of the duration of the protocol employing directionof ionizing radiation and/or total dose directed to the exposed subject per the distributionof protocols (e.g., imaging of aorta, aorta-arch, coronaries, femoral, other) exposed to theionizing radiation). The illustrated Fig. 4 can illustrate a frequency of performance ofdifferent protocols relative to one another and an associated distribution of radiation doseto the exposed subject 105.
    [0036] Referring to Fig. 5, an example of the report 240 can include an illustration505 of measured radiation dose (e.g., cumulative dose, duration of exposure to radiation,DAP (product of dose multiplied by area of radiation beam) reported in Gy/cmA2)directed to the exposed subject and cumulative percentile (%) for comparison relative totype of protocol (aorta, coronaries, imaging of aorta-arch, femoral, foot, lower leg,carotids, etc.), as well as relative to image acquisition mode (e.g., cardiac, fluoroscopy,digital subtraction angiography (DSA), etc.).
    [0037] Referring to Fig. 6, an example of the report 240 can include an illustration605 (e.g., bar graph) of a distribution of a number of events (e.g., exams, radiationtherapy treatments, etc.) that exceed a certain grouping or threshold range of radiationdose (e.g., grouped in 1 Gy dose range increments) directed to the exposed subject 105.An embodiment of the illustration can include a measure of number of image acquisitions(e.g., scans, exams) where the measured radiation dose exceeded the radiation dosethreshold, as defined to the right relative to a graphic representation 610 of the threshold(e.g., dotted line).
    [0038] Referring to Fig. 7, an example of the report 240 can include an illustration705 (e.g., bar graph) of a distribution of radiation dose directed to the exposed subject105 relative to variance in the source to image distance (SID) for the individual system130. This illustration relative to the individual system 130 can include a comparisonrelative to analogous distribution of radiation dose versus variance in SID for apopulation of other image acquisition systems 170 of similar type, or employed in similarprotocol of mode of image acquisition. The variance in STD (e.g., in centimeters) can beillustrated in groupings along the horizontal axis, and the vertical bar graphic illustrationcan represent the percentage of total monthly cumulative radiation dose directed (e.g.,ESAK, %). From this illustration, the user of the imaging system 105 can understand apotential reduction in radiation dose with change in the SID.
    [0039] Referring to Fig, 8, an example of the report 240 can include an illustration805 (e.g., bar graph) of a distribution of SID for the individual imaging system 130relative to a benchmark defined by data acquired from one or more similar types ofimaging systems 170, similar protocols of image acquisition, or similar modes of imageacquisition or combination thereof. The illustrated example shows the SID in groupings(e.g., range of centimeters) along the horizontal axis relative to a vertical bar graphicillustration of cumulative radiation dose for each SID grouping, and further split out orillustrated relative to mode of image acquisition (e.g., fluoroscopy, cardiac, etc.).
    [0040] Referring to Fig. 9, an example of the report 240 can include an illustration905 of an image acquisition scan or examination or therapy status information where ameasure of the radiation dose (e.g., cumulative radiation dose) directed to an exposedsubject exceeds the radiation dose threshold. The example illustration in Fig. 9 caninclude detailed status information associated with the examination, acquisition scan, ortherapy session where the radiation dose threshold was exceeded, including thefollowing: date/time stamp of examination, protocol (e.g., coronaries, etc.), type ofacquisition mode (e.g., fluoroscopy), auto exposure preference, frame rate, imageacquisition detail level, number of runs or scans in examination, total duration of examination, and cumulative radiation dose (e.g., ESAK, Gy) and DAP (mGy/cmA2)directed to the exposed subject 105.
    [0041] The example illustration 905 in Fig. 9 can further include a calculation ofequivalent patient thickness (EPT) (i.e., a thickness of acrylic plastic or the like (PMMA)that produces the same average radiation attenuation as the patient of interest under thegiven situation that can represent an indication of the difficulty in penetrating the patientwith a sufficient number of ionizing radiation to form a useful image) that can beemployed by the user to manage imaging dose efficiency optimization, and toautomatically set parameters of the imaging system when transitioning between imagingmodes without acquiring test exposures. The example illustration 905 in Fig. 9 canfurther includes an illustration of the measure of cumulative radiation dose directed to theexposed subject 105 over time, and the point in time of the examination when theradiation dose exceeded the threshold for the examination of interest. The exampleillustration 905 in Fig. 9 can also include a graphic representation (e.g., bar graph) of theSID or grouping thereof relative to the measure of radiation dose directed to the exposedsubject 105 during the examination of interest where the threshold was exceeded. Theexample illustration 905 can also show how changes in the SID can affect the radiationdose directed to the exposed subject 105.
    [0042] The example illustration 905 in Fig. 9 can further include an embodiment of acumulative dose incident map 910 associated with the examination of interest where theradiation dose exceeded the threshold. The embodiment of the cumulative dose incidentmap 910 can include an illustration of the measure of cumulative radiation dose (ESAK)directed o the exposed subject during the examination relative to the tracked position orangulation of the radiation source 125 and/or detector 140 of the imaging system 130.
    The tracked position (e.g. angulation) of the radiation source 125 and/or detector 140 canbe correlated to the tracked position (e.g., angulation) of the gantry 128 in support of theradiation source 125 or detector 140. The cumulative dose incident map 910 can includea horizontal axis 912 to represent varied positions of the gantry 128 with respect to left /right anterior oblique (LAO/RAO) position of the exposed subject 105, and a vertical axis 913 that can represent cranial/caudal positions of the gantry 128. The cumulative doseincident map 910 can also include a graphic representation 914 of the distribution of theradiation dose (e.g., ESAK) to the exposed subject 105 relative to the position (e.g.,angulation) of the gantry 128 (e.g., thirty degree increments) or the axes 912, 913.Thereby, the cumulative dose incident map 910 can illustrate the measure of the radiationdose as well as how radiation dose was directed to the exposed subject 105.
    [0043] Step 235 can further include identifying a proposed response or action 915(See Fig. 9) to reduce the radiation dose to the exposed subject 105, dependent inresponse to detecting the radiation dose exceeding the threshold according to the statusinformation of the imaging system 130 in directing the ionizing radiation to the exposedsubject 105. The proposed response or action 915 can be generated dependent onacquired data of responses or actions and tracked reduction in radiation dose to theexposed subject 105 as tracked or measured by one or more other users or other imagingsystems 170, different from the imaging system 130 of interest. Although the proposedresponse or actions 915 is illustrated in Fig. 9, the proposed response or action 915 can bepart of any of the other illustrated Figures 3-8 or independent thereof.
    [0044] The subject matter herein describes the system 100 and method 200 tomanage direction of the ionizing radiation 130 toward the exposed subject 105. Themethod 200 includes the steps of receiving a request 208 from a customer to establish aninternet or broadband connection 118 to communicate between the remote office 112 andthe system 130 directing the ionizing radiation toward the exposed subject 105;automatically communicating a status information and individual dose data associatedwith an event where direction of ionizing radiation 135 that exceeds a threshold;automatically creating and communicating the report 240 to the user display 245 of thecustomer, the report 240 including an indication of the event where direction of ionizingradiation 135 exceeds the threshold and a comparison of the individual radiation dosedata and an individual status operation of the ionizing radiation system 120 at time of theevent relative to a benchmark defined by radiation dose data and status informationacquired from a population of other systems 170 that direct ionizing radiation and communicate data to the remote office 112. The system 120 that directs the ionizingradiation can be a radiological imaging system 130, and the comparison can include anumber of acquired images of the individual radiological imaging system 130 relative toa number of acquired images of at least one of the population of other radiologicalimaging systems 170.
    [0045] The method 200 can include calculating the individual radiation dose data forat least one acquired image exceeds the threshold triggers the step of automaticallycommunicating the acquired status information and individual dose data from the remoteoffice 112 to the user display 245 of the customer. The method 200 can further includecomparing data from the individual ionizing radiation system 120 can be relative to dataof the one or more of the population of ionizing radiation systems 170 associated each ofthe following: a duration of a protocol employing the direction of ionizing radiation per adistribution of types of protocols, a frequency of performance of different protocolsrelative to one another and an associated distribution of radiation dose to the exposedsubject 105, the radiation dose, duration of exposure to the ionizing radiation 135,product of the radiation dose multiplied by an area of the beam of ionizing radiation 135directed to the exposed subject 105, and distribution of radiation dose relative to a type ofimage acquisition mode.
    [0046] The method 200 can further include comparison of data from the individualionizing radiation system 120 relative to data of the one or more of the population ofionizing radiation systems 170 associated each of the following: a distribution of anumber of events with the individual system 120 where the radiation dose directed to theexposed subject exceeds the threshold radiation dose, a distribution of radiation dosedirected to the exposed subject 105 relative to a variance in the source to image distance(SID), a distribution of SID for the individual system 120 relative to a benchmark definedby data acquired from one or more similar types of other systems 170 performing similarprotocols or modes of ionizing radiation operation, an auto exposure preference, a framerate of image acquisition, a calculated value of an equivalent exposed subject thickness that produces the same average radiation attenuation, and a point in time of theexamination when the radiation dose exceeded the radiation dose threshold.
    [0047] The method 200 can further comprise the steps of calculating a individualtrend in a history of the individual radiation dose acquired from the individualradiological imaging system 130; and comparing the individual trend relative to apopulation trend calculated from a history of the population radiation dose data acquiredfrom the population of other radiological imaging systems 170 for a selected time frameas received from the customer.
    [0048] Embodiments of the report 240 can include an illustration of a cumulativedose incident map 910 associated with the examination of interest where the radiationdose exceeded the threshold. The embodiment of the cumulative dose incident map 910can include the measure of cumulative radiation dose (ESAK) directed o the exposedsubject 105 during the examination relative to the tracked position or angulation of theradiation source 125 and/or detector 140 of the imaging system 130, the tracked positionor angulation of the radiation source 125 and/or detector 140 can be correlated to thetracked position or angulation of the gantry 128 in support of the radiation source 125 ordetector 140. Embodiments of the report 230 can includes a cumulative dose incidentmap 910 that comprises a graphic illustration of a horizontal axis 912 to represent variedpositions of a gantry in support of a source of the ionizing radiation with respect to a left /right anterior oblique (LAO/RAO) position of the exposed subject, a graphic illustrationof a vertical axis 913 that represents a cranial or caudal position of the gantry 128, and agraphic representation 914 of a distribution of radiation dose relative to the horizontal andvertical axes 912 and 913.
    [0049] The subject matter herein also describes the system 100 can include acomputer readable medium 155 including a plurality of program instructions forexecution by a processor 150 to perform the steps of receiving the request 208 from thecustomer to establish the internet or broadband connection 118 to communicate betweenthe remote office 112 and the system 120 directing the ionizing radiation toward the exposed subject 105; automatically communicating a status information and individualdose data associated with an event where direction of ionizing radiation 135 that exceedsa threshold; automatically creating and communicating a report via the internetconnection to the customer, the report including an indication of the event wheredirection of ionizing radiation exceeds the threshold and a comparison of the individualradiation dose data and an individual status operation of system at time of the eventrelative to a benchmark defined by radiation dose data and status information acquiredfrom a population of other systems that direct ionizing radiation and communicate data tothe remote office. The program instructions of the computer readable medium caninstruct the processor 150 upon calculating the individual radiation dose data for at leastone acquired image that exceeds the threshold, then to trigger the step of automaticallycommunicating the acquired status information and individual dose data from the remoteoffice 112 to the user display 245 of the customer.
    [0050] The program instructions of the computer readable medium can furtherinstruct the processor 150 to perform comparison of data from the individual ionizingradiation system 120 relative to data of the one or more of the population of ionizingradiation systems 170 further associated each of the following: a duration of a protocolemploying the direction of ionizing radiation 135 per a distribution of types of protocols216, a frequency of performance of different protocols 216 relative to one another and anassociated distribution of radiation dose directed to the exposed subject 105, the radiationdose, duration of exposure to the ionizing radiation 135, a product of the radiation dosemultiplied by an area of the beam of ionizing radiation 135 directed to the exposedsubject 105, and a distribution of radiation dose relative to a type of image acquisitionmode 216.
    [0051 ] Another embodiment of the program instructions of the computer readablemedium can further instruct the processor 150 to perform comparison of data from theindividual ionizing radiation system 120 relative to data of the one or more of thepopulation of ionizing radiation systems 170 further associated each of the following: adistribution of a number of events with the individual system 130 where the radiation dose directed to the exposed subject 105 exceeds the threshold radiation dose, adistribution of radiation dose directed to the exposed subject 105 relative to a variance inthe source to image distance (SID) 222, a distribution of SID for the individual system120 relative to a benchmark defined by data acquired from one or more similar types ofother systems 170 performing similar protocols 216 or modes of ionizing radiationoperation, an auto exposure preference, a frame rate of image acquisition, a calculatedvalue of an equivalent exposed subject thickness that produces the same average radiationattenuation, and a point in time of the examination when the radiation dose exceeded theradiation dose threshold.
    [0052] Embodiments of the computer readable medium can further compriseprogram instructions to instruct the processor 150 to perform the steps of calculating aindividual trend in a history of the individual radiation dose acquired from the individualradiological imaging system 170; and comparing the individual trend relative to apopulation trend calculated from a history of the population radiation dose data acquiredfrom the population of other radiological imaging systems 170 for a selected time frame(c.g., received from the customer).
    [0053] The computer readable medium can also include program instructions toinstruct the processor 150 to generate the report 240 to include the cumulative dose map910 associated with the examination of interest where the radiation dose exceeded thethreshold. The embodiment of the cumulative dose incident map 910 can include anillustration of the measure of cumulative radiation dose (ESAK) directed o the exposedsubject during the examination relative to the tracked position or angulation of theradiation source 125 and/or detector 140 of the imaging system 130, the tracked positionor angulation of the radiation source 125 and/or detector 140 can be correlated to thetracked position or angulation of the gantry 128 in support of the radiation source 125 ordetector 140.
    [0054] Embodiment of the program instructions can also instruct the processor 150to generate the report 240 to further include the cumulative dose incident map 910 that comprises a graphic illustration 912 of a horizontal axis to represent varied positions ofthe gantry 128 in support of the source 125 of the ionizing radiation with respect to a left/ right anterior oblique (LAO/RAO) position of the exposed subject 105, a graphicillustration 913 of a vertical axis that represents a cranial or caudal position of the gantry128, and a graphic representation 914 of a distribution of radiation dose directed to theexposed subject 105 relative to the horizontal and vertical axes 912, 913 of the map 910.
    [0055] A technical effect of the subject matter described above includes providingthe system 100 and method 200 to address concerns associated with use of ionizingradiation, and the need for access to data or increased knowledge to manage directingradiation dose to the exposed subject (e.g., patient) for different applications (e.g.,fluoroscopic imaging, x-ray imaging, CT imaging of various exposed areas (e.g., chest,arms, legs, etc.) of an exposed subject). This improved access to data can benefit theestablishment of standard operating procedures and protocols in the use of ionizingradiation to perform various tasks, as well as benefit the measurement and evaluation ofan impact of each procedure’s protocol in the likelihood for bum or other late effectsassociated with exposure to ionizing radiation relative to the characteristics of exposedsubjects 105.
    [0056] This written description uses examples to disclose the invention, includingthe best mode, and also to enable any person skilled in the art to make and use theinvention. The patentable scope of the invention is defined by the claims, and mayinclude other examples that occur to those skilled in the art. Such other examples areintended to be within the scope of the claims if they have structural elements that do notdiffer from the literal language of the claims, or if they include equivalent structuralelements with insubstantial differences from the literal languages of the claims.
    Parts List
    Part No. Reference Name 100 a management system 105 exposed subject 110 a controller 112 a remote workstation or office 115 a server 118 an internet or broadband or wireless connection 120 an ionizing radiation generating or emitting system or device 125 a radiation source 128 gantry 130 a radiological imaging system 135 a beam of ionizing radiation 140 a detector 150 a processor 155 memory 170 other sources (e.g., MRI systems, PET imaging system, picture archival system (PACS), etc.) 180 report/display 200 a method 205 step of establishing a broadband connection 208 request 210 step of acquiring an upper threshold of radiation doses 215 step of directing or delivering the beam or stream of ionizing radiation 216 task of image acquisition 218 location or region of imaging 220 step of acquiring a dose or dose rate of radiation 222 source to image distance 225 step of communicating to the remote office or station 230 step of analyzing the acquired data from the individual imaging system 235 step of generating a report 240 report 245 user display 305 an illustration 405 an illustration 505 an illustration 605 an illustration 610 a graphic representation of the threshold 705 an illustration 705 (e.g., bar graph) of a distribution of radiation dose 805 an illustration 905 an illustration 910 a cumulative dose map 915 proposed response or action
    权利要求:
    Claims (15)
    [1]
    A method (200) for controlling the direction of ionizing radiation (135) to an exposed subject (105), comprising: receiving a request (208) from a client to establish a broadband connection (205) to to communicate between a remote office (112) and the system (120) that directs the ionizing radiation (135) to the exposed subject (105); automatically communicating status information and individual dose data associated with an event in which the direction of ionizing radiation (135) exceeds a threshold (610); automatically creating and communicating via broadband connection to the client of a report (180, 240), the report comprising an indication of the event in which the direction of ionizing radiation (135) exceeds the threshold (610) and a comparison of the individual radiation dose data and an individual status operation of the system (120) at the time of the event relative to a reference point defined by radiation dose data and status information obtained from a population of other systems (120) directing ionizing radiation (135) and data to the office (112) communicate remotely.
    [2]
    The method (200) of claim 1, wherein the system (120) that directs deionizing radiation (135) is a radiological imaging system (130), and wherein the comparison includes a number of acquired images of the individual radiological imaging system (130) with respect to a number of acquired images of at least one of depopulation of other radiological imaging systems (130).
    [3]
    The method (200) of claim 2, wherein exceeding the threshold (610) in calculating the individual radiation dose data for at least one acquired image is the step of automatically communicating the acquired status information and individual dose data from the office ( 112) remotely to the client trigger.
    [4]
    The method (200) of claim 1, wherein the comparison of data from the individual radiological imaging system (120) with data from one or more of the population of ionizing radiation systems (120) is further connected to each of the following components: a duration of one protocol, which applies the direction of ionizing radiation (135) per distribution of types of protocol, a frequency of performance of different protocols relative to each other and a corresponding distribution of radiation dose (705) aimed at the exposed subject (105), the radiation dose, duration of exposure to ionizing radiation (135), product of the radiation dose multiplied by an area of the beam of ionizing radiation (135) directed at the exposed subject (105), and distribution of the radiation dose (705) with respect to a type of image acquisition mode.
    [5]
    The method (200) of claim 1, wherein the comparison of data from the individual radiological imaging system (120) with data from one or more of the population of ionizing radiation systems (120) is further connected to each of the following components: a distribution of a number of events in the individual system (120) in which the radiation dose directed at the exposed subject (105) exceeds the threshold (610), a distribution of radiation dose directed at the exposed subject (105) with respect to a variance in the distance from source to image (SID) (222), a distribution of SID for the individual system (120) with respect to a reference point, passing through one or more similar types of other systems (120), similar protocols or operating modes of ionizing radiation (135) output, acquired data is defined, an automatic exposure preference, a frame rate of image acquisition, a calculated value v of an equivalent exposed subject (105) thickness, which produces the same average radiation attenuation, and a point in time of the examination, at which the radiation dose exceeds the radiation dose threshold (610).
    [6]
    The method (200) of claim 1, further comprising the steps of: calculating an individual trend in a history of the individual radiation dose acquired from the individual radiological imaging system (130); and comparing the individual trend with a population trend, calculated from a history of the population radiation dose data obtained from the population of other radiological imaging systems (130) received from the user during a selected time frame.
    [7]
    The method (200) of claim 1, wherein the report (180, 240) comprises a cumulative dose map associated with the study of interest in which radiation dose has exceeded the threshold (610). The embodiment of decumulative incident dose card (910) may include an illustration of the magnitude of cumulative radiation dose (ESAK) directed at the exposed subject (105) in relation to the position or angle of the radiation source (125) and / or detector () 140) of the imaging system (130), wherein the tracked position or angle of the radiation source (125) and / or detector (140) can be correlated with the tracked position or angle of the portal (128), that the radiation source (120) or the detector (140).
    [8]
    The method (200) of claim 1, wherein the report (180,240) comprises a cumulative raid dose map (910) that includes a graphical illustration of a horizontal axis (912) at varying positions of a portal (128), a source (125) ) of deionizing radiation (135) to represent, with respect to a left / right anterior oblique (LAO / RAO) position of the exposed subject (105), a graphic illustration of a vertical axis (913) comprising cranial or caudal represents the position of the portal (128), and includes a graphical representation of a distribution of radiation dose (705) relative to the horizontal and vertical axes (912, 913).
    [9]
    A computer readable medium (155), which contains a number of program instructions for execution by a processor (150) to perform the following steps: receiving a request from a client to establish a broadband connection to communicate between a remote office (112) and the system (120) that directs the ionizing radiation (135) to the exposed subject (105); automatically communicating status information and individual dose data associated with an event in which the direction of ionizing radiation (135) exceeds a threshold (610); automatically creating and communicating a report (180,240) to the client via the broadband connection, the report indicating the event in which the direction of ionizing radiation (135) exceeded the threshold (610), a comparison of the individual radiation dose data and an individual status operation of the system (120) at the time of the event relative to a reference point defined by radiation dose data and status information obtained from a population of other systems (120) directing ionizing radiation (135) and communicating data to the office (112) remotely, contains.
    [10]
    The computer readable medium (155) according to claim 9, wherein exceeding the threshold (610) in calculating the individual radiation dose data for at least one acquired image enters the step of automatically communicating the acquired status information and individual dose data from the office (112) distance to the client.
    [11]
    The computer readable medium (155) according to claim 9, wherein the comparison of data from the individual radiological imaging system (120) with data from one or more of the population of ionizing radiation systems (120) is further associated with each of the following components: a duration of a protocol applying the direction of ionizing radiation (135) per distribution of types of protocol, a frequency of performance of different protocols relative to each other and a corresponding distribution of radiation dose (705) aimed at the exposed subject (105), radiation dose, duration of exposure to ionizing radiation (135), product of radiation dose multiplied by an area of the beam of ionizing radiation (135) directed to the exposure subject (105), and distribution of the radiation dose (705) with respect to a type of image acquisition mode.
    [12]
    The computer readable medium (155) of claim 9, wherein the comparison of data from the individual radiological imaging system (120) with data from one or more of the population of ionizing radiation systems (120) is further connected to each of the following components: a distribution of a number event in the individual system, in which the radiation dose directed at the exposed subject (105) exceeds the threshold (610), a distribution of radiation dose directed at the exposed subject (105) with respect to a variance in the distance of source to image (SID) (222), a distribution of SID (222) for the individual system (120) with reference to a reference point, passing through one or more similar types of other systems (120), which have similar protocols or modes of operation of ionizing radiation (135), acquired data is defined, an automatic exposure preference, a frame rate of image acquisition, a be calculated value of an equivalent exposure subject (105) thickness, which produces the same average radiation attenuation, and a point in time of the examination, at which the radiation dose exceeds the radiation dose threshold (610).
    [13]
    The computer readable medium (155) according to claim 9, further comprising the steps of: calculating an individual trend in a history of the individual radiation dose acquired from the individual radiological imaging system (130); and comparing the individual trend with a population trend, calculated from a history of the population radiation dose data obtained from the population of other radiological imaging systems (130) received from the user during a selected time frame.
    [14]
    The computer-readable medium (155) according to claim 9, wherein the report contains a cumulative dose map associated with the study of interest in which irradiation dose has exceeded the threshold (610). The embodiment of decumulative incident dose card may include an illustration of the magnitude of cumulative radiation dose (ESAK) directed at the exposed subject (105) in view of the position or angle of the radiation source and / or detector of the imaging system, the position followed or angle of the radiation source and / or detector can be correlated with the tracked position or angle of the portal supporting the radiation source or the detector.
    [15]
    The computer-readable medium (155) according to claim 9, wherein the report (180,240) includes a cumulative raid dose map (910) that contains a graphical illustration of a horizontal axis (912) about varying positions of a portal (128) that has a source (125) of the ionizing radiation (135) to represent, with respect to a left / right forward oblique (LAO / RAO) position of the exposed subject (105), a graphic illustration of a vertical axis (913) containing cranial or caudal position of the portal (128), and contains a graphical representation of a distribution of radiation dose (705) directed to the exposed subject (105) relative to the horizontal and vertical axes (912, 913) of the map (910) .
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