JP2014140415A - Management apparatus, x-ray diagnostic apparatus, and exposure dose management program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control an exposure dose received by a subject in a predetermined period of time.SOLUTION: A management apparatus according to the embodiment comprises a storage unit, a calculation unit, and an output control unit. The storage unit stores exposure dose information associated with each subject in which are mutually related a photography date by an X-ray diagnostic apparatus, a body part of a subject exposed to X rays emitted by the X-ray diagnostic apparatus, and an exposure dose at the body part. When a subject as a processing object, a body part of the object, and a period of processing are specified by an operator, the calculation unit relates the specified subject and body part and acquires from the storage unit the exposure dose information in which the photography dates in the specified period are related, and calculates an integrated value of the exposure doses contained in the acquired exposure dose information. The output control unit relates the integrated value calculated by the calculation unit with the body part, and lets the information be output by an output unit.

Description

  Embodiments described herein relate generally to a management apparatus, an X-ray diagnostic apparatus, and an exposure dose management program.

  There is a DTS (Dose Tracking System) that manages, for each examination, an X-ray dose that is exposed to the surface of a subject as a skin exposure dose when an X-ray image is taken by an X-ray diagnostic apparatus. For example, the DTS calculates the exposure dose of the subject from the irradiation conditions by the X-ray diagnostic apparatus. Further, the DTS generates a pseudo human body model based on the physical information of the subject, and displays the exposure amount in association with the human body model on the monitor.

JP 2010-131371 A

  The problem to be solved by the present invention is to provide a management apparatus, an X-ray diagnostic apparatus and an exposure dose management program capable of managing the exposure dose to which a subject has been exposed during a predetermined period.

  The management apparatus according to the embodiment includes a storage unit, a calculation unit, and an output control unit. The storage unit stores, for each subject, exposure information in which an imaging date by the X-ray diagnostic apparatus, a part exposed to the subject by the X-rays irradiated by the X-ray diagnostic apparatus, and an exposure dose in the part are associated with each other. Store it in association with. When the operator designates a subject to be processed, a part in the subject, and a period to be treated, the calculation unit associates the designated subject and the part and is designated The exposure amount information associated with the photographing date within the period is acquired from the storage unit, and the integrated value of the exposure amount included in the acquired exposure amount information is calculated. The output control unit causes the output unit to output the integrated amount calculated by the calculation unit and the part.

FIG. 1 is a diagram illustrating a configuration example of an X-ray diagnostic apparatus according to the first embodiment. FIG. 2 is a diagram showing an example of a screen displayed for managing the exposure dose of the subject P imaged by the X-ray diagnostic apparatus. FIG. 3 is a diagram illustrating an example of a data structure of the exposure amount information. FIG. 4 is a diagram illustrating an example of information associated with the exposure data ID. FIG. 5 is a diagram illustrating an example of integration target data acquired by the integration value calculation unit according to the first embodiment. FIG. 6 is a diagram illustrating an example of the integrated value calculated by the integrated value calculating unit according to the first embodiment. FIG. 7 is a flowchart illustrating a processing procedure performed by the X-ray diagnostic apparatus according to the first embodiment. FIG. 8A is a diagram illustrating an example of influence degree information stored in the storage unit according to the second embodiment. FIG. 8B is a diagram illustrating an example of influence degree information stored in the storage unit according to the second embodiment. FIG. 9 is a diagram illustrating an example of the integrated value calculated by the integrated value calculating unit according to the second embodiment. FIG. 10 is a flowchart illustrating a processing procedure performed by the X-ray diagnostic apparatus according to the second embodiment.

  Hereinafter, a management apparatus, an X-ray diagnostic apparatus, and an exposure dose management program according to embodiments will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a diagram illustrating a configuration example of an X-ray diagnostic apparatus 100 according to the first embodiment. As shown in FIG. 1, the X-ray diagnostic apparatus 100 includes a gantry unit 10 and a computer system 20. As shown in FIG. 1, the gantry unit 10 includes a bed 11, a gantry 12, a C arm 13, an X-ray tube 14, an X-ray detector 15, and an output unit 16. The X-ray diagnostic apparatus 100 does not include the subject P.

  The bed 11 is movable in the vertical direction and the horizontal direction, and the subject P is placed thereon. The gantry 12 supports the C arm 13. The C arm 13 supports the X-ray tube 14 and the X-ray detector 15 so as to face each other.

  The X-ray tube 14 emits X-rays. The X-ray detector 15 detects X-rays irradiated from the X-ray tube 14 and transmitted through the subject P. The pair of X-ray tube 14 and X-ray detector 15 is configured to rotate around a geometric center of rotation. This center of rotation is the isocenter.

  A coordinate system (also referred to as a gantry coordinate system) in the gantry 10 is set as follows. That is, the direction of the axis in the gantry 10 is the Z axis in the direction parallel to the long axis of the bed 11, the X axis in the direction parallel to the short axis of the bed 11, and the Y axis in the vertical direction with respect to the upper surface of the bed 11. Is set.

  The C arm 13 can rotate in the LAO (Left Anterior Oblique View) direction or the RAO (Right Anterior Oblique View) direction around the Z axis. The rotation angle in the LAO direction or RAO direction is indicated by φ. Further, the C arm 13 can rotate in a CRA (Cranial view) direction or a CAU (Caudal view) direction around the Y axis. The rotation angle in the CRA direction or CAU direction is indicated by θ.

  The output unit 16 is a monitor, for example, and displays an X-ray image such as a fluoroscopic image.

  Returning to FIG. 1, the computer system 20 includes an operation unit 21, an X-ray image data storage unit 22, a control unit 23, an X-ray image data collection unit 24, a C arm control unit 25, a display control unit 26, A dose management unit 27.

  The operation unit 21 is a control panel, a foot switch, a joystick, a keyboard, a mouse, or the like, and receives input of various operations on the X-ray diagnostic apparatus 100 from an operator. Specifically, the operation unit 21 according to the first embodiment receives an X-ray image data collection instruction, various instructions associated with the management of the dose exposed to the subject P, and the like.

  For example, the operation unit 21 receives an operation on the bed 11 for moving the observation target in the subject P to the center of the screen from the operator. Thereby, the control part 23 moves the bed 11 according to operation of an operator. The operation unit 21 receives an operation for rotating the C-arm 13 from the operator. Thereby, the C arm control part 25 rotates the C arm 13 according to an operator's operation. In addition, the operation unit 21 receives setting of shooting conditions from the operator. For example, the operation unit 21 receives an operation for setting a coronary artery as an observation target from the operator. Then, the operation unit 21 sends information about the observation target set via the control unit 23 to the dose management unit 27. For example, the operation unit 21 receives information such as SID (Source-Isocenter Distance) and FOV (field of view) from the operator. Note that the X-ray diagnostic apparatus 100 may hold values such as SID and FOV in advance.

  The operation unit 21 receives various instructions from an operator who manages the dose to which the subject P has been exposed. For example, the operation unit 21 receives from the operator an instruction to display the dose that the subject P has been exposed to. Specifically, the operation unit 21 receives from the operator an instruction to display the dose per minute that the subject P has been exposed. In addition, the operation unit 21 receives an instruction to display the total amount of dose to which the subject P has been exposed from the operator during imaging.

  The X-ray image data storage unit 22 stores X-ray image data and the like. The control unit 23 performs overall control of the X-ray diagnostic apparatus 100.

  When receiving an X-ray image data collection instruction from the operator via the operation unit 21, the X-ray image data collection unit 24 controls the X-ray tube 14, the X-ray detector 15, and the C-arm control unit 25, Collect X-ray image data. Here, the X-ray image data collection unit 24 collects an image in which X-rays irradiated on the subject P are projected by the X-ray detector 15. The X-ray image data collection unit 24 sends the collected X-ray image data to the display control unit 26.

  The C arm control unit 25 controls the rotation of the C arm 13 and the like under the control of the X-ray image data collection unit 24. The display control unit 26 displays the X-ray image captured by the X-ray image data collection unit 24 on the output unit 16.

  The dose management unit 27 manages the dose exposed to the subject P in the X-ray diagnostic apparatus 100 as the skin exposure dose (exposure dose). The dose management unit 27 includes, for example, a human body model generation unit 27a, a dose calculation unit 27b, an output control unit 27c, a storage unit 27d, and an integrated value calculation unit 28e.

  The human body model generation unit 27 a receives personal information (gender, age, height, weight, rough system classification, etc.) of the subject P input from the operation unit 21 and an X-ray image stored in the X-ray image data storage unit 22. A human body model of the subject P or the diagnosis target part is generated based on the supplementary information attached to the subject P. Note that the human body model generation unit 27a may generate a human body model that approximately represents the subject P by an ellipse, a sphere, or the like, or may generate a human body model that faithfully represents the human body or the like. Further, the human body model generation unit 27a automatically selects a profile closest to the subject P from a plurality of human body tomographic profiles based on the body information of the subject P, and uses the selected profile for the whole body. Create a human body model.

  The dose calculation unit 27 b calculates the exposure dose based on the human body model generated by the human body model generation unit 27 a and the imaging conditions obtained from the X-ray diagnostic apparatus 100. For example, the dose calculation unit 27b is obtained from the imaging conditions input from the X-ray image data collection unit 24, the position of the C arm 13 obtained from the C arm control unit 25, the position of the bed 11, and the position of the X-ray detector 14. Various information (SID, angle formed between the axis connecting the X-ray tube 15 and the X-ray detector 14 and the body axis of the subject P or an arbitrary reference axis) and each position obtained from the generated human body model The exposure dose for each pixel of the human body model is obtained based on the thickness of the subject P. Then, the dose calculation unit 27b generates an exposure dose distribution in which the part on the human body model and the exposure dose are associated with the subject P. In addition, the dose calculation unit 27b stores the generated dose distribution in the storage unit 27d.

  The output control unit 27c causes the output unit 16 to output the exposure dose distribution for the subject P. Further, the output control unit 27c causes the output unit 16 to output the integrated dose distribution generated by the later-described integrated value calculation unit 27e. The distribution of the integrated amount of the exposure dose associates the integrated amount calculated by the integrated value calculating unit 27e with the part.

  A screen displayed for managing the exposure dose of the subject P imaged by the X-ray diagnostic apparatus 100 will be described with reference to FIG. FIG. 2 is a diagram illustrating an example of a screen displayed for managing the exposure dose of the subject P imaged by the X-ray diagnostic apparatus 100. For example, in the screen area 2 a shown in FIG. 2, imaging conditions when X-ray image data is captured by the X-ray diagnostic apparatus 100 are displayed. Further, for example, in the screen area 2b shown in FIG. 2, the value of the exposure amount per minute of the subject P at the time of imaging by the X-ray diagnostic apparatus 100 is displayed. In addition, for example, in the screen area 2c shown in FIG. 2, the total exposure amount (time integral value) of the subject P at the time of imaging by the X-ray diagnostic apparatus 100 is displayed.

  In addition, the dose management unit 27 generates information in which the exposure dose is associated with the part on the human body model, and causes the output unit 16 to display the information. Specifically, the dose management unit 27 displays image data in which a color tone corresponding to the exposure dose is assigned to each pixel on the human body model in the screen area 2d shown in FIG.

  Thus, in the X-ray diagnostic apparatus 100, the dose management unit 27 manages the exposure dose for each examination. For this reason, the conventional X-ray diagnostic apparatus cannot manage the exposure dose of the subject P for a long time. Therefore, the X-ray diagnostic apparatus 100 according to the first embodiment stores the past exposure dose and manages the exposure dose of the subject P over a long period of time. Specifically, the storage unit 27d stores the past exposure dose, and the integrated value calculation unit 27e calculates the integrated value of the exposure dose of the subject P exposed for each examination.

  Next, the storage unit 27d and the integrated value calculation unit 27e included in the dose management unit 27 according to the first embodiment will be described in detail. The storage unit 27d stores exposure amount information in which an imaging date by the X-ray diagnostic apparatus 100, a part exposed to the subject P by X-rays irradiated by the X-ray diagnostic apparatus, and an exposure dose in the part are associated with each other. Each subject P is stored in association with each other. For example, the storage unit 27d stores, as a part of the subject associated with the exposure amount information, a part corresponding to the part exposed by the X-ray on the human body model imitating the body type of the subject. .

  An example of the data structure of the dose information will be described with reference to FIG. FIG. 3 is a diagram illustrating an example of a data structure of the exposure amount information. As shown in FIG. 3, the exposure amount information stores information in which “subject ID”, “examination ID”, “part”, “examination date”, and “exposure data ID” are associated with each other. .

  Here, the “subject ID” stored in the exposure amount information is an identifier for uniquely identifying the subject P. For example, data values such as “aaa” and “bbb” are stored in “Subject ID”.

  The “examination ID” stored in the exposure dose information is an identifier for uniquely identifying the examination. For example, a data value such as “001” or “002” is stored in the “inspection ID”.

  The “part” stored in the exposure amount information indicates a part on the human body model of the subject P to be examined. For example, data values such as “chest”, “head”, “lower limb”, and “abdomen” are stored in “part”.

  The “examination date” stored in the exposure dose information indicates the date on which the subject P was imaged by the X-ray diagnostic apparatus 100. For example, data values such as “2012/04/12” and “2012/05/07” are stored in the “inspection date”. The “examination date” is not limited to the date, but may be a date. For example, the “examination date” may store a data value designated up to a second. is there.

  Further, the “exposure data ID” stored in the exposure dose information indicates an identifier of information on the exposure dose in the part. For example, data values such as “x000a” and “x001a” are stored in the “exposure data ID”.

  As an example, the exposure dose information shown in FIG. 3 shows that the chest of the subject whose “subject ID” is “aaa” in the examination whose “examination ID” is “001” is 12 April 2012. The photographed exposure data ID is “x000a”.

  Then, the information matched with exposure data ID is demonstrated using FIG. FIG. 4 is a diagram illustrating an example of information associated with the exposure data ID. As shown in FIG. 4, the information associated with the exposure data ID is recorded for each of a plurality of pixels obtained by dividing the human body model by a predetermined unit. For example, in the two-dimensional region shown in FIG. 4, the dose of the pixel positioned at the coordinates (Xi, Zi) is 200, and the dose of the pixel positioned at the coordinates (Xi + 1, Zi + 2) is 300. Indicates.

  When the operator specifies a subject P to be processed, a part in the subject P, and a period to be processed, the integrated value calculation unit 27e associates the designated subject P and the part. In addition, the exposure amount information associated with the photographing date within the designated period is acquired from the storage unit 27d, and the integrated value of the exposure amount included in the acquired exposure amount information is calculated.

  A processing operation by the integrated value calculation unit 27e according to the first embodiment will be described with reference to FIGS. FIG. 5 is a diagram illustrating an example of integration target data acquired by the integration value calculation unit 27e according to the first embodiment. FIG. 5 illustrates a case where the subject ID is “aaa”, the region is “chest”, and “December 22, 2012 to January 1, 2012” is accepted as a period. As shown in FIG. 5, the integrated value calculation unit 27e obtains information associated with the exposure data ID “x000a” and information associated with the exposure data ID “x000c” as integration target data from the exposure amount information. get.

  FIG. 6 is a diagram illustrating an example of the integrated value calculated by the integrated value calculating unit 27e according to the first embodiment. FIG. 6 shows an integrated value of information associated with the exposure data ID “x000a” (hereinafter referred to as information A) and information associated with the exposure data ID “x000c” (hereinafter referred to as information B). The calculation process will be described. The integrated value calculating unit 27e integrates the doses of pixels positioned at the same coordinates in the information A and the information B. In the example shown in FIG. 6, the integrated value calculation unit 27e calculates the integrated amount of the pixel positioned at the coordinates (Xi, Zi) to 500 (= 300 + 200).

  Then, the integrated value calculating unit 27e generates a distribution of the integrated amount of the exposure amount in which the calculated integrated amount of the exposure amount is associated with the part on the human body model. Further, the integrated value calculation unit 27e outputs the generated integrated dose distribution to the output control unit 27c. Thereby, the output control unit 27c outputs the integrated amount calculated by the integrated value calculating unit 27e to the output unit 16 in association with the part on the human body model associated with the exposure amount information acquired by the integrated value calculating unit 27e. Let For example, the output control unit 27c causes the output unit 16 to display image data superimposed on a part on the human body model associated with the exposure amount information acquired by the integrated value calculation unit 27e. Further, the output control unit 27c can output the image data as reconfigurable information to an external device. Thereby, the external apparatus can display the image data in which the exposure information is superimposed on the part on the human body model.

  Next, a processing procedure performed by the X-ray diagnostic apparatus 100 according to the first embodiment will be described with reference to FIG. FIG. 7 is a flowchart showing a processing procedure performed by the X-ray diagnostic apparatus 100 according to the first embodiment.

  As shown in FIG. 7, the integrated value calculation unit 27e according to the first embodiment receives designation of the subject ID and the target part from the operator (step S101). For example, the integrated value calculation unit 27e according to the first embodiment receives designation of “aaa” as the subject ID and “chest” as the target region from the operator.

  Further, the integrated value calculation unit 27e according to the first embodiment accepts designation of a period from the operator (step S102). For example, the integrated value calculation unit 27e according to the first embodiment accepts “December 22, 2012 to January 1, 2012” as the period.

  Then, the integrated value calculation unit 27e according to the first embodiment acquires data for the specified period from the data of the specified target region of the specified subject ID (step S103). For example, the integrated value calculation unit 27e according to the first embodiment acquires data to be integrated from the exposure amount information stored in the storage unit 27d.

  Subsequently, the integrated value calculation unit 27e according to the first embodiment integrates the exposure dose for each exposure region (step S104). Then, the output control unit 27c displays the exposure area and the exposure dose in association with each other (step S105). For example, the output control unit 27c displays image data in which a color tone corresponding to the exposure dose is assigned to each pixel on the human body model.

  As described above, according to the first embodiment, it is possible to manage the exposure dose to which the subject P has been exposed during a predetermined period.

  In the X-ray diagnostic apparatus 100, the dose management unit 27 may have an output unit. Then, the output control unit 27c may display image data to which a color tone corresponding to the exposure dose is assigned for each pixel on the human body model on the external unit other than the output unit 16 or the output unit of the dose management unit 27. Good.

  In addition, when the change of the designated period is received, the integrated value calculation unit 27e according to the first embodiment may change the period and calculate the integrated amount of the exposure dose of the subject P. In addition, the integrated value calculation unit 27e performs the integration process when the exposure amount information in which the part exposed to the subject P and the exposure dose in the part are associated is stored in the storage unit 27d. In addition, a human body model of the subject P to be managed may be generated, and a distribution of the integrated amount of the exposure amount in which the generated human body model is associated with the integrated amount may be generated.

  In addition, the dose management unit 27 may designate a plurality of parts. For example, the dose management unit 27 may calculate an integrated amount of the exposure dose in the head and chest of the subject P from the operator. Alternatively, the dose management unit 27 may calculate an integrated amount of the exposure dose in all parts of the subject P.

(Second Embodiment)
In the first embodiment, the X-ray diagnostic apparatus 100 has been described with respect to the case where the imaging date is within the period designated by the operator and the exposure dose of the designated site is simply integrated. Incidentally, the degree of influence of X-ray exposure varies depending on the elapsed period from the imaging date. In addition, the degree of influence of X-ray exposure varies depending on the site to be exposed. For this reason, the time until recovery from the influence of exposure differs depending on the exposed part and the elapsed period from the imaging date. For this reason, in the second embodiment, an example will be described in which the exposure dose is integrated by taking into consideration the degree of influence of X-ray exposure according to the elapsed period from the imaging date for each exposure site.

  The configuration of the X-ray diagnostic apparatus 100 according to the second embodiment is the same as that of the first embodiment except that the output control unit 27c, the storage unit 27d, and the integrated value calculation unit 27e have the following functions described below. The configuration of the X-ray diagnostic apparatus 100 is the same.

  The storage unit 27d according to the second embodiment further stores the influence information of the X-ray exposure according to the elapsed period from the imaging date. Here, the memory | storage part 27d which concerns on 2nd Embodiment links | relates and memorize | stores the influence degree according to the elapsed period from the imaging | photography date for every site | part.

  The influence degree information stored in the storage unit 27d according to the second embodiment will be described with reference to FIGS. 8A and 8B. 8A and 8B are diagrams illustrating an example of influence degree information stored in the storage unit 27d according to the second embodiment. 8A shows, for example, influence information when the part is the lower limb, and FIG. 8B shows influence information when the part is the chest, for example.

  As shown in FIG. 8A, the influence degree information is stored in association with “elapsed period” and “influence degree coefficient”. Here, the “elapsed period” indicates the number of days that have elapsed since the photographing date. For example, data values such as “˜100 days” and “101 days-200 days” are stored in the “elapsed period”.

  The “influence degree coefficient” indicates the influence degree of X-ray exposure according to the elapsed period from the imaging date. For example, data values such as “1” and “0.5” are stored in the “influence degree coefficient”.

  As an example, the influence degree information shown in FIG. 8A indicates that the influence degree coefficient is “1” when 100 days have not passed since the photographing date. Further, the influence degree information illustrated in FIG. 8A indicates that the influence degree coefficient is “0.5” when 101 days or more have elapsed since the photographing date but 200 days have not elapsed.

  Similarly, the influence degree information illustrated in FIG. 8B indicates that the influence degree coefficient is “1” when 100 days have not elapsed since the photographing date. The influence degree information shown in FIG. 8B indicates that the influence degree coefficient is “0.4” when 301 days or more have passed since the photographing date but 400 days have not passed. In this way, the influence coefficient is set to a different value depending on the part. That is, the degree of the influence of the X-ray exposure differs depending on the part to be exposed. In the above example, the influence degree information is represented by a representative value for each period divided by a predetermined number of days of elapsed time. However, in this embodiment, the influence degree is represented by a continuous function corresponding to the elapsed time. May be.

  The integrated value calculation unit 27e according to the second embodiment has an influence coefficient according to the time between the shooting date associated with the exposure dose to be integrated and the final date of the period specified by the operator. Is obtained from the storage unit 27d, and the correction amount obtained by correcting the exposure amount by the acquired influence coefficient is set as an accumulation target. Specifically, the integrated value calculation unit 27e according to the second embodiment acquires the degree of influence coefficient corresponding to the imaging date and region associated with the exposure dose to be integrated from the storage unit 27d, and acquires A correction amount obtained by correcting the exposure dose by the influence degree coefficient is set as an integration target.

  The processing operation by the integrated value calculation unit 27e according to the second embodiment will be described with reference to FIG. FIG. 9 is a diagram illustrating an example of the integrated value calculated by the integrated value calculating unit 27e according to the second embodiment. FIG. 9 shows an integrated value of information associated with the exposure data ID “x000a” (hereinafter referred to as information A) and information associated with the exposure data ID “x000c” (hereinafter referred to as information B). The calculation process will be described.

  The integrated value calculation unit 27e according to the second embodiment refers to the imaging date associated with the exposure dose to be integrated and the designated part, and affects the influence level information stored in the storage unit 27d. Get the degree factor. Here, if the reference date is set to December 22, 2012, the information A has an elapsed period of “201 days to 300 days” from the shooting date. In addition, the information B has an elapsed period from the shooting date of “˜100 days”. Then, the integrated value calculation unit 27e according to the second embodiment acquires “0.6” as the influence coefficient of the information A when the specified part is the chest, and “ 1 ”is acquired.

  Then, the integrated value calculation unit 27e according to the second embodiment multiplies the information A by the influence coefficient “0.6” and multiplies the information B by the influence coefficient “1”. Subsequently, the integrated value calculation unit 27e according to the second embodiment integrates doses of pixels positioned at the same coordinates in the information A and the information B after multiplication. In the example shown in FIG. 9, the integrated value calculation unit 27e calculates the dose of the pixel positioned at the coordinates (Xi, Zi) to 380 (= (300 × 0.6) + (200 × 1)).

  The output control unit 27c according to the second embodiment causes the output unit 16 to output the integrated amount calculated using the influence degree and the part in association with each other. For example, the output control unit 27c according to the second embodiment causes the output unit 16 to display image data in which the integrated amount calculated using the degree of influence is superimposed on a part on the human body model.

  In addition, the output control unit 27c according to the second embodiment may cause the output unit 16 to output at least one of the integrated amount integrated using the influence degree and the integrated amount integrated without using the influence degree. . Further, the output control unit 27c according to the second embodiment is described as causing the output unit 16 to output at least one of the integrated amount integrated using the influence degree and the integrated amount integrated without using the influence degree. However, both the integrated amount integrated using the influence degree and the integrated amount integrated without using the influence degree may be simultaneously output to the output unit 16. Further, the output control unit 27c according to the second embodiment receives an instruction from the operator, and switches between an integrated amount integrated using the influence degree and an integrated amount integrated without using the influence degree, and outputs the result. You may make it output to the part 16.

  Next, a processing procedure performed by the X-ray diagnostic apparatus 100 according to the second embodiment will be described with reference to FIG. FIG. 10 is a flowchart illustrating a processing procedure performed by the X-ray diagnostic apparatus 100 according to the second embodiment.

  As shown in FIG. 10, the integrated value calculation unit 27e according to the second embodiment receives the subject ID and the target part designation from the operator (step S201). For example, the integrated value calculation unit 27e according to the second embodiment receives designation of “aaa” as the subject ID and “chest” as the target region from the operator.

  Further, the integrated value calculation unit 27e according to the second embodiment accepts designation of a period from the operator (step S202). For example, the integrated value calculation unit 27e according to the second embodiment accepts “December 22, 2012 to January 1, 2012” as the period.

  Then, the integrated value calculation unit 27e according to the second embodiment acquires data for the specified period from the data of the specified target region of the specified subject ID (step S203). For example, the integrated value calculation unit 27e according to the second embodiment acquires data to be integrated from the exposure amount information stored in the storage unit 27d.

  Subsequently, the integrated value calculation unit 27e according to the second embodiment acquires an influence degree coefficient of the target part (step S204). For example, the integrated value calculation unit 27e according to the second embodiment refers to the imaging date associated with the exposure dose to be integrated and the specified part, and the degree of influence information stored in the storage unit 27d. Get the influence coefficient from.

  Then, the integrated value calculation unit 27e according to the second embodiment multiplies the data to be integrated by the influence coefficient (step S205). Subsequently, the integrated value calculation unit 27e according to the second embodiment integrates the exposure amount for each exposure region of the data to be integrated multiplied by the influence degree coefficient (step S206).

  Then, the output control unit 27c according to the second embodiment displays the exposure area and the exposure dose in association with each other (step S207).

  As described above, according to the second embodiment, in the second embodiment, the exposure dose is integrated in consideration of the influence degree of the X-ray exposure according to the elapsed period from the imaging date. Thereby, for example, the exposure dose can be managed in consideration of the elapsed period from the shooting date. Furthermore, it is possible to appropriately manage the exposure dose for parts having different degrees of influence.

  Moreover, the output control part 27c which concerns on 2nd Embodiment may display the integrated amount which changed and integrated the period, when the change of the designated period is received. Furthermore, the output control unit 27c according to the second embodiment may display all the image data obtained by superimposing the accumulated amount obtained by changing the period and the human body model as thumbnails.

  In addition, a common value may be used for all the influence coefficients. In this case, the integrated value calculating unit 27e according to the second embodiment uses the influence degree coefficient indicating the influence degree of the X-ray exposure according to the elapsed period from the imaging date, and the integrated amount of the exposure of the subject P. Is calculated.

  Moreover, although the X-ray diagnostic apparatus 100 demonstrated the example which accumulate | stores an exposure dose, embodiment is not limited to this. For example, the dose management unit 27 may be made independent from the X-ray diagnostic apparatus 100 to be a dose management apparatus, and the dose management apparatus may accumulate the integrated dose. In this case, the dose management apparatus acquires from the X-ray diagnostic apparatus 100 the date of imaging by the X-ray diagnostic apparatus 100 and the part exposed to the subject P by the X-rays irradiated by the X-ray diagnostic apparatus. In addition, the dose management apparatus can also acquire the imaging date and the site exposed to the subject P from other X-ray diagnostic apparatuses connected via a network such as a LAN (Local Area Network). . Thereby, the dose management apparatus manages the integrated amount of the exposure dose even when the same subject P is inspected by different X-ray diagnosis apparatuses, instead of managing only one X-ray diagnosis apparatus 100. be able to.

  Furthermore, all or a part of each processing function performed in each device may be realized by a CPU and a program that is analyzed and executed by the CPU, or may be realized as hardware by wired logic.

  According to the management apparatus, X-ray diagnostic apparatus, and exposure dose management program of at least one embodiment described above, it is possible to manage the exposure dose to which the subject has been exposed during a predetermined period.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

27 Dose management unit 27c Output control unit 27d Storage unit 27e Integrated value calculation unit 100 X-ray diagnostic apparatus

Claims (8)

The exposure date associated with the imaging date by the X-ray diagnostic apparatus, the part exposed to the subject by the X-rays irradiated by the X-ray diagnostic apparatus, and the exposure dose in the part are stored in association with each subject. A storage unit to
When a subject to be processed, a part in the subject, and a period to be processed are designated by the operator, the designated subject and part are associated with each other and imaging within the designated period is performed. A calculation unit that acquires exposure amount information associated with a day from the storage unit and calculates an integrated value of the exposure amount included in the acquired exposure amount information;
A management apparatus comprising: an output control unit that causes the output unit to output the integrated amount calculated by the calculation unit in association with the part. The storage unit stores a part corresponding to a part exposed to the subject by X-rays on a human body model imitating the body type of the subject as a part of the subject associated with the exposure amount information,
The output control unit causes the integrated amount calculated by the calculation unit to be output in association with a part on the human body model associated with the exposure amount information acquired by the calculation unit. The management device described. The management apparatus according to claim 2, wherein the output control unit displays image data superimposed on a part on the human body model associated with the exposure dose information acquired by the calculation unit. The storage unit further stores, as the degree of influence of X-ray exposure, the degree of influence according to the elapsed period from the imaging date,
The calculation unit acquires the degree of influence according to the time between the shooting date associated with the exposure dose to be integrated and the last day of the period specified by the operator from the storage unit, and acquires The management device according to any one of claims 1 to 3, wherein a correction amount obtained by correcting the exposure dose based on the degree of influence is an integration target. The storage unit stores the degree of influence according to the elapsed period from the imaging date for each exposed part,
The calculation unit acquires from the storage unit the degree of influence corresponding to the imaging date and region associated with the exposure amount to be integrated, and calculates a correction amount obtained by correcting the exposure amount based on the acquired degree of influence. The management apparatus according to claim 4, wherein: 6. The output control unit according to claim 4, wherein the output control unit causes the output unit to output at least one of an integrated amount corrected based on the influence degree and an integrated amount not corrected based on the influence degree. The management device described. A storage unit that stores, in association with each subject, exposure amount information in which an imaging date, a portion to which the subject is exposed by irradiated X-rays, and an exposure amount in the portion are associated;
When a subject to be processed, a part in the subject, and a period to be processed are designated by the operator, the designated subject and part are associated with each other and imaging within the designated period is performed. A calculation unit that acquires exposure amount information associated with a day from the storage unit and calculates an integrated value of the exposure amount included in the acquired exposure amount information;
An X-ray diagnostic apparatus, comprising: an output control unit that associates the integrated amount calculated by the calculation unit and outputs the output to the output unit. The exposure date associated with the imaging date by the X-ray diagnostic apparatus, the part exposed to the subject by the X-rays irradiated by the X-ray diagnostic apparatus, and the exposure dose in the part are stored in association with each subject. In the computer that stores in the department,
When a subject to be processed, a part in the subject, and a period to be processed are designated by the operator, the designated subject and part are associated with each other and imaging within the designated period is performed. A calculation procedure for acquiring exposure dose information associated with a day from the storage unit and calculating an integrated value of the exposure dose included in the acquired exposure dose information;
An exposure control program for executing an output control procedure for causing the output unit to output the integrated amount calculated by the calculation procedure in association with the part.

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