JP6791700B2 - Exposure risk management support device - Google Patents

Description

An embodiment of the present invention relates to an exposure risk management support device.

In recent years, medical technology has developed rapidly and has greatly contributed to the discovery of various lesions and the understanding of lesions. In particular, a medical diagnostic imaging apparatus using radiation such as X-rays, gamma rays, and positron rays can measure the inside of a subject without undergoing surgical treatment. For this reason, radiological treatment using this type of medical diagnostic imaging device has become widespread.

However, radiation exposure to the patient himself or the caregiver who cares for the patient due to radiation treatment may damage the health of the patient or the caregiver. Therefore, various methods have been proposed for managing such medical exposure.

On the other hand, in radiological treatment, there is a risk that medical workers such as doctors, nurses, radiological technologists, and clinical laboratory technicians are also exposed to radiation. Therefore, in order to manage the occupational exposure of such medical staff, a method of having the medical staff carry a dosimetry device and managing the exposure dose of the medical staff has been proposed.

However, in the method of managing the exposure dose by having a medical worker carry a dosimetry device, the exposure dose cannot be grasped unless the dosimetry device is collected. Therefore, it is difficult to grasp the current radiation dose of medical staff when making an appointment for a radiological examination.

JP-A-2007-97909 JP-A-2009-213905 Japanese Unexamined Patent Publication No. 2005-253689

Therefore, the purpose is to provide an exposure risk management support device that can grasp the current exposure dose of medical staff at the time of appointment for radiological examination.

According to the embodiment, the exposure risk management support device has an exposure dose calculation unit that calculates the radiation dose that the medical staff is exposed to occupationally by the inspection based on the inspection order information regarding the requested inspection.

FIG. 1 is a block diagram showing a system in which the exposure risk management support device according to the present embodiment is used. FIG. 2 is a block diagram showing a functional configuration of the RIS server and the RIS terminal shown in FIG. FIG. 3 is a diagram showing a test exposure dose master stored in the RIS server shown in FIG. FIG. 4 is a diagram showing a test exposure dose correction value master stored in the RIS server shown in FIG. FIG. 5 is a diagram showing a patient state exposure dose correction value master stored in the RIS server shown in FIG. FIG. 6 is a diagram showing a distance correction value master stored in the RIS server shown in FIG. FIG. 7 is a diagram showing a medical worker correction value master stored in the RIS server shown in FIG. FIG. 8 is a diagram illustrating the operation of the RIS server and the RIS terminal when assigning a medical worker to the requested examination. FIG. 9 is a diagram comparing the cumulative exposure dose for a predetermined period with the dose limit. FIG. 10 is a diagram showing a warning display displayed by the display circuit shown in FIG. FIG. 11 is a diagram illustrating another example of operation between the RIS server and the RIS terminal when assigning a medical worker to the requested examination. FIG. 12 is a diagram showing selection candidates displayed in the display circuit shown in FIG. FIG. 13 is a diagram illustrating another example of the operation of the RIS server and the RIS terminal when assigning a medical worker to the requested examination. FIG. 14 is a diagram illustrating another example of the operation of the RIS server and the RIS terminal when assigning a medical worker to the requested examination. FIG. 15 is a diagram illustrating the operation of the RIS server and the RIS terminal when updating the current exposure dose stored in the medical staff database.

Hereinafter, embodiments will be described with reference to the drawings.

FIG. 1 is a block diagram showing a system in which the exposure risk management support device according to the present embodiment is used. The system shown in FIG. 1 is, for example, a RIS (Radiology Information System). The system shown in FIG. 1 includes a RIS server 10 and a RIS terminal 20 as a part of elements constituting the system. In the following description, the case where the exposure risk management support device is realized by the RIS server 10 and the RIS terminal 20 will be described as an example, but the present invention is not limited to this. The exposure risk management support device may be realized by one device.

The RIS server 10 manages information related to radiological examination work used in RIS. For example, the RIS server 10 manages information on medical appointments within the radiology department, information on reports of diagnosis results, information on actual results, and the like.

The RIS server 10 is connected to the RIS terminal 20, the HIS server constituting the hospital information system (HIS), and the medical diagnostic imaging device via a LAN (Local Area Network), which is a communication network in a medical facility. To do. The RIS server 10 may be connected to the RIS terminal 20, the HIS server, and the medical diagnostic imaging apparatus via an external network in addition to the LAN or instead of the LAN.

The RIS server 10 receives the patient information and the examination order information output from the HIS server. The patient information includes information on the patient ID, patient name, gender, height, weight, age, blood type, need for nursing care, and the like. The examination order information includes an order number that can identify the examination, a patient ID, a scheduled examination date and time, an examination type, an examination site, request source information, and the like. The inspection types include X-ray inspection, CT (Computed Tomography) inspection, MR (Magnetic Resonance) inspection, RI (Radio Isotope) inspection, and the like. The inspection site includes ABDOMEN, BRAIN, CHEST and the like. The request source information includes the name of the clinical department and the name of the doctor in charge. The RIS server 10 outputs the inspection execution information regarding the inspection performed according to the inspection order information to the HIS server.

The RIS server 10 communicates with a medical image diagnostic device using a predetermined communication standard, for example, DICOM (digital imaging and communication in medicine). The medical diagnostic imaging apparatus includes an X-ray computed tomography apparatus, an X-ray diagnostic apparatus, a magnetic resonance imaging apparatus, a nuclear medicine diagnostic apparatus, an ultrasonic diagnostic apparatus, and the like. The RIS server 10 outputs patient information and examination order information to a medical diagnostic imaging apparatus. When the medical image diagnostic apparatus performs the examination according to the examination order information, the medical image diagnostic apparatus outputs the examination execution information to the RIS server 10.

FIG. 2 is a block diagram showing an example of the functional configuration of the RIS server 10 and the RIS terminal 20 according to the present embodiment. The RIS server 10 shown in FIG. 2 includes a communication interface circuit 11, a storage circuit 12, and a control circuit 13.

The communication interface circuit 11 is an interface for performing communication with the LAN. The communication interface circuit 11 is realized by, for example, a communication port, a router, or the like. The communication interface circuit 11 converts the information read from the storage circuit 12 according to a preset method, and outputs the converted information to the LAN. Further, the communication interface circuit 11 receives information via the LAN and converts the received information according to a preset method.

The storage circuit 12 has a recording medium that can be read by a processor, such as a magnetic or optical recording medium or a semiconductor memory. The storage circuit 12 stores information related to the radiological examination work and various programs for the control circuit 13 to realize a predetermined function.

A medical worker database 121, a reservation database 122, and a performance database 123 are constructed in the storage circuit 12. The medical staff database 121, the reservation database 122, and the performance database 123 are managed by the control circuit 13 executing a program stored in the storage circuit 12.

The medical worker database 121 is a database in which information on the radiation dose to which the medical worker is exposed is managed. In the present embodiment, the medical worker refers to a person who is assigned to engage in the examination in terms of duties (qualification, ability, working hours, etc.), for example, a doctor, a nurse, a radiological technologist, a clinical laboratory technician, etc. Is. Specifically, in the medical worker database 121, for example, the identification information (medical worker ID) for identifying the medical worker includes the name, gender, date of birth, age, occupation, department, and department of the medical worker. And the exposure dose measured by the dosimetry device is associated. Occupations include doctors, nurses, radiological technologists, clinical laboratory technicians, and the like. The dosimetry device is always carried by each medical worker and measures the radiation amount in the environment in which the medical worker is placed. The dosimetry device is collected after a predetermined period of time. Upon recovery, the radiation dose measured during the period carried by the healthcare professional will be reported to the RIS.

The reservation database 122 is a database that manages information related to medical appointments. Specifically, in the reservation database 122, for example, the patient information, the scheduled examination date and time, the examination type, the examination site, the procedure, the position, the imaging direction, the request source information, and the medical image diagnosis device are added to the order number that can identify the examination. The model name and the name of the medical worker who is directly involved in the examination are associated. The information managed in the reservation database 122 is registered based on the patient information supplied from the HIS server, the examination order information, and the information input from the RIS terminal 20 with reference to the examination order information.

The performance database 123 is a database that manages information related to reports of diagnosis results. Specifically, in the performance database 123, for example, in the order number, patient information, examination date and time, examination type, examination site, procedure, position, imaging direction, distance information, request source information, model name of medical diagnostic imaging apparatus , Medical worker name, findings information, diagnostic information, etc. are associated. The information managed in the performance database 123 is registered based on the information managed in the reservation database 122 and the information input from the RIS terminal 20 and / and the medical diagnostic imaging apparatus after performing the examination. For example, the distance information is input by the medical staff who performed the inspection after the examination is completed, as information according to the place where the medical staff is located during the examination.

Further, the storage circuit 12 stores in advance various masters for calculating the exposure dose of the medical staff. Specifically, the storage circuit 12 contains, for example, an examination exposure dose master 124, an examination exposure dose correction value master 125, a patient state exposure dose correction value master 126, a distance correction value master 127, and a medical worker correction value master 128. I remember it in advance. The master stored in the storage circuit 12 is read out in response to a request from the RIS terminal 20 and output to the request source RIS terminal 20.

In the inspection exposure dose master 124, the radiation dose to be occupationally exposed per second and the setting information related to the inspection are associated in advance. The setting information related to the inspection represents the setting information in which the radiation dose emitted from the medical image diagnostic device changes due to changes in attributes such as the test type, the test site, and the model name of the medical image diagnostic device. .. The radiation dose that is occupationally exposed per second is an empirically estimated radiation dose, and is preset based on the inspection type, inspection site, model name of the medical image diagnostic apparatus, and the like. The examination exposure dose master 124 is a table that records, for example, an examination type, an examination site, a model name of a medical diagnostic imaging apparatus, and an occupational radiation dose per second, and is set information related to the examination, that is, an examination type. , Examination site, model name of medical diagnostic imaging device, etc. are used as keys.

In the inspection exposure dose correction value master 125, the correction value of the radiation dose to be exposed to occupation is associated with a special procedure and / or a special drug in advance. A special procedure represents a procedure characterized by the amount of radiation exposed to the profession. A special drug represents a drug that emits radiation. Examples of the special procedure and the special drug set include a set of "myocardial blood flow imaging" and "Tc-99m MIBI" or "Tc-99m technetium". "Myocardial blood flow imaging" is a procedure performed in RI (Radio Isotope) examination. "Tc-99m MIBI" and "Tc-99m technetium" are high-radiation agents used in myocardial blood flow imaging. Moreover, as a special technique, for example, "total hip arthroplasty" and "panorama method" can be mentioned. "Total hip arthroplasty" is a procedure performed in CT examination. "Total hip arthroplasty" is characterized in that the amount of radiation that a medical worker is exposed to occupationally increases or decreases about twice depending on the physique of the patient. The "panorama method" is a technique used in dental photography. The "panorama method" is characterized by a low radiation dose to occupational exposure to medical staff. Examples of the special drug include "18F-FDG". "18F-FDG" is a drug used in PET (Positron-Emission Tomography) examinations. The PET examination is a test in which the radiation dose to the patient is low, but the radiation dose to the occupational exposure may be high for the medical staff. The correction value of the radiation dose to be exposed to occupation is a correction value to the radiation dose to be exposed to occupation in one second, and is represented by, for example, a magnification. The test exposure dose correction value master 125 is, for example, a table in which a special procedure, a special drug, and a correction value are recorded, and a special procedure, a special drug, or the like is used as a key. For example, when a special procedure and / or a special drug is used in the requested examination, the radiation dose to occupational exposure per second is increased by the rate set by the correction value.

In the patient condition exposure dose correction value master 126, the correction value of the radiation dose to be exposed to occupation and the condition of the patient are associated in advance. The patient's condition represents the condition of the patient in which an increase or decrease in radiation dose may occur, and includes, for example, information on age, height, weight, and need for nursing care. The patient condition exposure dose correction value master 126 is, for example, a table that records information on age, height, weight, and need for care, and information on age, height, weight, and need for care is used as a key. Be done. For example, if the patient requested to be examined is large and the radiation dose needs to be increased, the radiation dose to be occupationally exposed per second is increased by the rate set by the correction value. In addition, when the patient requested to be examined is a child and it is necessary to suppress the radiation dose, the radiation dose to be occupationally exposed per second is reduced by the ratio set by the correction value.

In the distance correction value master 127, the correction value of the radiation dose to be exposed to occupation and the place where the medical staff is located during the examination are associated in advance. The location of the health care worker during the examination represents the positional relationship between the source of radiation and the health care worker. Locations where the healthcare professional is located during the examination include, for example, the laboratory to be used, whether inside or outside the laboratory, and the distance from the medical imaging device. The distance correction value master 127 is, for example, a table that records the laboratory to be used, whether it is inside or outside the laboratory, the distance from the medical diagnostic imaging apparatus, and the correction value, and is inside the laboratory or laboratory to be used. Whether it is outside or outside, and the distance from the medical diagnostic imaging device are used as keys. For example, during a requested examination, when a healthcare professional is away from the medical imaging device, the radiation dose to occupational exposure per second is reduced by a percentage set by the correction value.

In the medical worker correction value master 128, the correction value of the radiation dose to be exposed to occupation and the value based on the radiation dose actually measured by the dosimetry device are associated in advance. The value based on the radiation dose measured by the dosimetry device includes, for example, the average radiation dose obtained by averaging the radiation dose measured in the last n months. The medical worker correction value master 128 is, for example, a table in which the minimum value of the average radiation dose, the maximum value of the average radiation dose, and the correction value are recorded, and the average radiation dose is used as a key.

Further, the storage circuit 12 stores the patient information exposure dose correction value input from the medical diagnostic imaging apparatus. The patient information exposure dose correction value is associated with a predetermined treatment in, for example, a special treatment master stored in advance in the medical diagnostic imaging apparatus. If the examination requires special treatment such as manually fixing the patient, the healthcare professional who performed the examination selects the treatment performed from the special treatment master at the end of the examination. When a treatment is selected from the special treatment master, the correction value corresponding to the selected treatment is read from the special treatment master. The read correction value is output to the RIS server 10 as a patient information exposure dose correction value. Patient information The radiation dose correction value is stored in association with information that can identify the patient, for example, the patient ID.

The control circuit 13 is a processor that functions as the center of the RIS server 10. The control circuit 13 realizes a function corresponding to the program by executing the control program stored in the storage circuit 12.

The RIS terminal 20 shown in FIG. 2 includes an input interface circuit 21, a display circuit 22, a communication interface circuit 23, a storage circuit 24, and a control circuit 25.

The input interface circuit 21 is realized by, for example, a mouse, a keyboard, a touch pad on which instructions are input by touching an operation surface, and the like. The input interface circuit 21 receives various instructions from the operator. The input interface circuit 21 is connected to the control circuit 25 via, for example, a bus, converts an operation instruction input from the operator into an electric signal, and outputs the electric signal to the control circuit 25. In this specification, the input interface circuit 21 is not limited to the one provided with physical operating parts such as a mouse and a keyboard. For example, an input interface circuit is also an electric signal processing circuit that receives an electric signal corresponding to an operation instruction input from an external input device provided separately from the RIS terminal 20 and outputs the electric signal to the control circuit 25. Included in 21 examples.

The display circuit 22 includes, for example, a display interface circuit and a display device. The display interface circuit converts data representing a display target into a video signal. As the display device, for example, a CRT display, a liquid crystal display, an organic EL display, an LED display, a plasma display, and any other display known in the art can be appropriately used. The display device displays the video signal converted by the display interface circuit.

The communication interface circuit 23 is an interface for performing communication with the LAN. The communication interface circuit 23 is realized by, for example, a communication port, a router, or the like. The communication interface circuit 23 converts the information read from the storage circuit 24 according to a preset method, and outputs the converted information to the LAN. Further, the communication interface circuit 23 receives information via the LAN and converts the received information according to a preset method.

It has a storage circuit 24, a magnetic or optical recording medium, or a recording medium that can be read by a processor, such as a semiconductor memory. The storage circuit 24 stores information output from the RIS server 10 and various programs for the control circuit 25 to realize a predetermined function.

The control circuit 25 is a processor that functions as the center of the RIS terminal 20. By executing the control program stored in the storage circuit 24, the control circuit 25 realizes a function corresponding to the program. For example, the control circuit 25 has an exposure dose calculation function 251 and an exposure dose prediction function 252, a determination function 253, and a registration function 254.

The exposure dose calculation function 251 is a function for calculating the radiation dose occupationally exposed to the medical staff in the examination requested by the examination order information based on the values read from the masters 124 to 128.

The exposure dose prediction function 252 is a function of calculating the radiation dose predicted to be exposed in the future based on the radiation dose calculated by the exposure dose calculation function 251.

The determination function 253 is a function for determining whether or not the radiation dose predicted by the exposure dose prediction function 252 exceeds the dose limit. The dose limit is set to, for example, 100 mSv for 5 years and 50 mSv for 1 year. For women, the dose limit for 3 months is set to 5 mSv. Furthermore, for pregnant women, the internal exposure is set to be less than 1 mSv from the time when the fact of pregnancy is known to the time of delivery. The determination function 253 may give a predetermined range to the predicted radiation amount and compare it with the dose limit.

The registration function 254 is a function for registering information in the medical staff database 121 and the reservation database 122 managed by the RIS server 10.

In the above, the exposure dose calculation function 251 and the exposure dose prediction function 252, the determination function 253, and the registration function 254 are defined as modules constituting the processing program according to the present embodiment. However, it is not limited to this. For example, the control circuit 25 includes a dedicated hardware circuit that realizes the exposure dose calculation function 251, a dedicated hardware circuit that realizes the exposure dose prediction function 252, a dedicated hardware circuit that realizes the determination function 253, and a registration function. It may have a dedicated hardware circuit that realizes 254. Further, the control circuit 25 includes an application specific integrated circuit (ASIC) incorporating these dedicated hardware circuits, a field programmable logic device (FPGA), and other composites. It may be realized by a programmable logic device (Complex Programmable Logic Device: CPLD) or a simple programmable logic device (Simple Programmable Logic Device: SPLD).

Next, in the RIS configured as described above, the processing when a medical worker is assigned to the requested examination will be described. In the following description, the test exposure dose master 124 stored in the storage circuit 12 of the RIS server 10 is represented by the table shown in FIG. 3, and the test dose correction value master 125 is represented by the table shown in FIG. The patient state exposure dose correction value master 126 is represented by the table shown in FIG. 5, the distance correction value master 127 is represented by the table shown in FIG. 6, and the medical worker correction value master 128 is represented by. It shall be represented by the table shown in FIG. In addition, "-" shown in FIG. 4 indicates that there is no setting. In addition, healthcare professionals shall always carry a dosimetry device that measures the amount of radiation they are exposed to. The dosimetry device is collected every time a predetermined period elapses, for example, every month. Upon recovery, the radiation dose measured during the period carried by the healthcare professional will be reported to the RIS.

FIG. 8 is a diagram illustrating an example of operation between the RIS server 10 and the RIS terminal 20 when assigning a medical worker to the requested examination.

In FIG. 8, first, the examination order information and the patient information are supplied from the HIS server (step S81). The RIS server 10 outputs the received examination order information and patient information to the RIS terminal 20 (step S82).

The RIS terminal 20 displays on the display circuit 22 a screen on which the operator can input necessary information regarding the examination reservation based on the received examination order information and patient information (step S83). The operator refers to the screen displayed on the display circuit 22 and inputs necessary information via the input interface circuit 21 (step S84). The necessary information input by the operator includes, for example, the procedure performed in the examination, the position at the time of the examination, the imaging direction, the model name of the medical image diagnostic device, the name of the medical worker who is directly involved in the examination, and the like. The procedure, position, model name, imaging direction, model name of the medical image diagnostic device, etc. are stored in the reservation database on the RIS server 10 based on the inspection order information supplied from the HIS server and the past inspection results. It may be automatically registered in 122.

The control circuit 25 of the RIS terminal 20 executes the exposure dose calculation function 251 when a medical worker is selected by inputting necessary information by the operator. When the dose calculation function 251 is executed, the control circuit 25 sets the master 124 to 128, the patient information dose correction value, the information about the selected healthcare worker, and the past examinations involving the selected healthcare worker. Request information about the RIS server 10 (step S85). The request signal includes, for example, a patient ID, a medical worker ID, and the like.

Upon receiving the request from the RIS terminal 20, the RIS server 10 reads the masters 124 to 128 from the storage circuit 12. Further, the RIS server 10 reads out the patient information exposure dose correction value from the storage circuit 12 using the patient ID as a key, for example. In addition, the RIS server 10 reads information about the selected medical worker from the medical worker database 121 using the medical worker ID as a key. In addition, the RIS server 10 reads out information on past examinations involving the selected medical worker from the performance database 123 using the medical worker ID as a key. The RIS server 10 obtains the read information of the masters 124 to 128, the patient information exposure dose correction value, the information about the selected medical staff, and the information about the examinations that the selected medical staff has performed in the past, in the RIS terminal 20. Output to (step S86).

When the control circuit 25 of the RIS terminal 20 receives the information of the masters 124 to 128, the patient information dose correction value, the information about the selected medical staff, and the information about the examinations that the selected medical staff has performed in the past. , Calculate the radiation dose to be exposed to occupation by the requested inspection (step S87).

Specifically, the control circuit 25 uses the inspection order information and the setting information related to the inspection included in the input necessary information, for example, the inspection type, the inspection site, the model name, etc. as keys, and the inspection exposure dose master. Read "radiation dose to occupational exposure per second" from 124. According to the test exposure dose master 124 shown in FIG. 3, for example, when the test type: CT test, the test site: CHEST, the model name: ..., the "radiation dose to be occupationally exposed per second" is "x". Is read.

When the "radiation dose to be occupationally exposed per second" is read from the inspection exposure dose master 124, the control circuit 25 inspects using the inspection order information and the procedure, drug, etc. included in the input necessary information as keys. The “examination exposure dose correction value” is read from the exposure dose correction value master 125.

Further, when the "radiation dose to be occupationally exposed per second" is read from the examination exposure dose master 124, the control circuit 25 contains information on the patient's condition, for example, age, height, weight, and need for nursing care, which is included in the patient information. With the above as a key, the "patient state exposure dose correction value" is read out from the patient state exposure dose correction value master 126.

Subsequently, the control circuit 25 compares the “examination exposure dose correction value”, the “patient state exposure dose correction value”, and the “patient information exposure dose correction value”. The control circuit 25 adopts the maximum correction value among the three correction values. For example, as shown in FIG. 4, the “examination exposure dose correction value” is “1.2”, and as shown in FIG. 5, the “patient condition exposure dose correction value” is “2” and , When the "patient information exposure dose correction value" is "1.5", the control circuit 25 adopts the "patient state exposure dose correction value" which is "2".

In the state before the inspection is performed, the accurate distance information at the time of the inspection is not input. Therefore, the distance correction value is set by using the default value. Specifically, the control circuit 25 sets “1”, which is the maximum correction value among the correction values stored in the distance correction value master 127, as the distance correction value as the correction value related to the distance.

In addition, the control circuit 25 calculates the average radiation dose for the last n months based on the measured value of the radiation dose included in the information about the medical staff. The control circuit 25 reads out the “medical worker correction value” from the medical worker correction value master 128 using the average exposure dose as a key. According to the medical worker correction value master 128 shown in FIG. 7, for example, when the average exposure dose is “0.04 μSv”, the “medical worker correction value” is read as “3”.

The control circuit 25 uses the following equation to correct the “radiation dose to be occupationally exposed per second” read from the inspection exposure dose master 124.

"Corrected radiation dose to occupational exposure in one second" = "Radiation dose to occupational exposure in one second" x "Maximum correction value" x "1" x "Healthcare worker correction value"
The control circuit 25 calculates the inspection time, which is the time required for the inspection, from the start time and the end time of the inspection. The control circuit 25 calculates the radiation dose that the medical staff is exposed to occupationally in the inspection by multiplying the corrected radiation dose by the inspection time using the following formula.

"Radiation dose of occupational exposure by inspection" = "Radiation dose of occupational exposure in one second corrected" x "Inspection time"
When the "radiation dose of occupational exposure due to the examination" was calculated, the control circuit 25 was engaged with the selected medical staff from the time when the latest period when the radiation was measured by the dosimetry device to the time before the examination. The radiation dose of occupational exposure from past examinations is calculated (step S88).

Specifically, the control circuit 25 is "occupied in one second" from the examination dose master 124, using the setting information related to the examination included in the information on the past examinations carried out by the selected medical staff as a key. Read out "radiation dose".

When the "radiation dose occupationally exposed per second" is read from the examination dose master 124, the control circuit 25 performs the procedure, the drug, etc. included in the information on the past examination in which the selected medical staff was involved. As a key, the “test exposure dose correction value” is read from the test exposure dose correction value master 125. Further, when the "radiation dose occupationally exposed per second" is read from the examination exposure dose master 124, the control circuit 25 keys the patient's condition included in the information regarding the past examinations involving the selected medical staff. As a result, the "patient state exposure dose correction value" is read out from the patient state exposure dose correction value master 126. The control circuit 25 adopts the maximum correction value from the “examination exposure dose correction value”, the “patient state exposure dose correction value”, and the “patient information exposure dose correction value”.

In addition, the control circuit 25 includes information about the location of the medical staff during the examination, which is included in the information about the past examinations performed by the selected medical staff, for example, the laboratory to be used, inside and outside the laboratory. , And the "distance correction value" is read from the distance correction value master 127 by using the distance from the medical image diagnostic device as a key. According to the distance correction value master 127 shown in FIG. 6, for example, the examination room where the examination was performed is "examination room 1", the medical staff is present on the "inside" side of the examination room, and the medical diagnostic imaging apparatus. When the distance from is "3 m", the distance correction value is read as "0.5".

In addition, the control circuit 25 calculates the average radiation dose for the last n months based on the measured value of the radiation dose included in the information about the medical staff. The control circuit 25 reads out the “medical worker correction value” from the medical worker correction value master 128 using the average exposure dose as a key.

The control circuit 25 corrects the “occupational exposure dose per second” read from the inspection exposure dose master 124 using the following equation.

"Corrected radiation dose for occupational exposure in one second" = "Radiation dose for occupational exposure in one second" x "maximum correction value" x "distance correction value" x "medical worker correction value"
The control circuit 25 calculates the inspection time from the inspection start time and the inspection end time. The control circuit 25 calculates the radiation dose that the medical staff has professionally exposed in the past examination by multiplying the corrected radiation amount by the examination time.

"Radiation dose of occupational exposure from past examinations" = "Radiation dose of occupational exposure in one second corrected" x "Examination time"
When the "radiation dose of occupational exposure by inspection" and the "radiation dose of occupational exposure by past inspection" are calculated, the control circuit 25 executes the exposure dose prediction function 252. When the exposure dose prediction function 252 is executed, the control circuit 25 adds "radiation dose of occupational exposure by examination" and "occupational exposure by past examination" to the actually measured exposure dose included in the information about the medical staff. The cumulative exposure dose from the start date of the cumulative addition to the current examination is calculated by adding up the radiation dose of. The control circuit 25 divides the calculated cumulative exposure dose by the number of days from the start date to calculate the average daily exposure dose.

Then, the control circuit 25 calculates the cumulative exposure dose for a preset period from the start date based on the average exposure dose (step S89). The start date and _{Y A} year _{M A} month _{D A} date, and the date after the lapse of the period of time that is set in advance and _{Y B} year _{M B} month _{D B} date, cumulative exposure dose at _{Y B} year _{M B} month _{D B} Date Is calculated using the following formula.

"Cumulative exposure dose from the start date to Y _B year M _B month D _B Date" = "cumulative exposure dose of up to the current inspection" + "daily average dose" × (Y _B year M _B month D _B Date - Y _A year _{M A} month _{D A} Date)
When the "cumulative exposure dose from the start date to the Y _B Year M _B Month D _B day" is calculated, the control circuit 25 performs a determining function 253. The decision function 253 is executed, the control circuit 25, the calculated "cumulative exposure dose from the start date to the Y _B Year M _B Month D _B" days, whether the higher dose limits defined by law Determine (step S810). If the calculated "cumulative exposure dose from the start date to the Y _B Year M _B Month D _B" days, and more than dose limits to be set on the basis of the above rules (Yes in step S810), for example, in FIG. 9 As shown, if the cumulative dose 5 years after the start date is 100 mSv or higher, the control circuit 25 may indicate that the dose of the selected healthcare worker may exceed the dose limit, eg. , Displayed on the display circuit 22 as shown in FIG. 10 (step S811). If the calculated "cumulative exposure dose from the start date to the _{Y B} Year _{M B} Month _{D B} date" is less than the dose limit (No in step S810), the control circuit 25 shifts the processing to step S813.

Following step S811, the control circuit 25 determines whether or not there has been an input to confirm the selection for the healthcare professional whose cumulative exposure dose is equal to or greater than the dose limit (step S812). When there is an input to confirm the selection (Yes in step S812), the control circuit 25 ends the input of necessary information (step S813). When there is an input to cancel the selection for the healthcare worker whose cumulative exposure dose is equal to or greater than the dose limit (No in step S812), the control circuit 25 accepts the selection of a different healthcare worker (step S814), step. The process of step S812 is repeated from S85.

When the input of the necessary information is completed in step S813, the control circuit 25 executes the registration function 254 and outputs an instruction to register the input necessary information to the RIS server 10 (step S815).

When the RIS server 10 receives the registration instruction from the RIS terminal 20, the RIS server 10 registers the necessary information input in the RIS terminal 20 in the reservation database 122 (step S816).

The operation of the RIS server 10 and the RIS terminal 20 when allocating a medical worker to the requested examination is not limited to FIG. For example, the RIS server 10 and the RIS terminal 20 may present selectable candidates to the operator. FIG. 11 is a diagram illustrating the operation of the RIS server 10 and the RIS terminal 20 when presenting a candidate who can be selected for the requested inspection to the operator.

In FIG. 11, the control circuit 25 of the RIS terminal 20 executes the exposure dose calculation function 251 when the necessary information is input from the operator in step S84. When the exposure dose calculation function 251 is executed, the control circuit 25 requests the RIS server 10 for masters 124 to 128, patient information exposure dose correction values, information on medical staff, and information on past examinations. (Step S111).

Upon receiving the request from the RIS terminal 20, the RIS server 10 reads the masters 124 to 128 from the storage circuit 12. Further, the RIS server 10 reads out the patient information exposure dose correction value from the storage circuit 12 using the patient ID as a key, for example. In addition, the RIS server 10 reads information about the medical staff from the medical staff database 121. In addition, the RIS server 10 reads information on past inspections from the performance database 123. The RIS server 10 outputs the read information of the masters 124 to 128, the patient information exposure dose correction value, the information about the medical staff, and the information about the past examination to the RIS terminal 20 (step S112).

When the control circuit 25 of the RIS terminal 20 receives the information of the masters 124 to 128, the patient information exposure dose correction value, the information about the medical staff, and the information about the past examination, the radiation dose to be occupationally exposed by the requested examination is determined. , Calculate for all registered healthcare professionals (step S113). The specific calculation method is the same as the method described with reference to FIG.

When the "radiation dose of occupational exposure due to the examination" is calculated, the control circuit 25 has been involved in the past by each medical worker from the time when the latest period when the radiation was measured by the dosimetry device to the time before the examination. The radiation dose of occupational exposure by inspection is calculated (step S114). The specific calculation method is the same as the method described with reference to FIG.

When the "radiation dose of occupational exposure by inspection" and the "radiation dose of occupational exposure by past inspection" are calculated, the control circuit 25 executes the exposure dose prediction function 252. When the exposure dose prediction function 252 is executed, the control circuit 25 adds "radiation dose of occupational exposure by examination" and "occupational exposure by past examination" to the actually measured exposure dose included in the information about the medical staff. The cumulative exposure dose from the start date of the cumulative addition to the current examination is calculated by adding up the radiation dose of. The control circuit 25 divides the calculated cumulative exposure dose by the number of days from the start date to calculate the average daily exposure dose. Then, the control circuit 25 calculates the cumulative exposure dose for a preset period from the start date based on the average exposure dose (step S115).

When the cumulative exposure dose for a preset period from the start date is calculated, the control circuit 25 executes the determination function 253. When the determination function 253 is executed, the control circuit 25 determines whether or not the cumulative exposure dose calculated for each medical worker is equal to or greater than the dose limit determined by law. The control circuit 25 sets a medical worker whose calculated cumulative exposure dose is less than the dose limit as a candidate for selection (step S116).

The control circuit 25 causes the selection candidate to display a screen that can be selected by the operator on the display circuit 22 (step S117). At this time, the control circuit 25 may preferentially display the medical worker having a small cumulative exposure dose. Priority display includes, for example, displaying the medical staff having the lowest cumulative exposure dose in a visible font, and displaying the medical staff having the lowest cumulative exposure dose in order. FIG. 12 is a schematic diagram showing a display example of the selection candidate displayed on the display circuit 22. FIG. 12 shows an example in which the occupation type is displayed together with the name of the medical worker.

The operator refers to the screen displayed on the display circuit 22 and inputs necessary information via the input interface circuit 21 (step S118).

When the input of the necessary information by the operator is completed, the control circuit 25 ends the input of the necessary information (step S119). When the input of the necessary information is completed, the control circuit 25 executes the registration function 254 and outputs an instruction to register the input necessary information to the RIS server 10 (step S1110).

Upon receiving the registration instruction from the RIS terminal 20, the RIS server 10 registers the necessary information input in the RIS terminal 20 in the reservation database 122 (step S1111).

Note that FIG. 8 describes an example of issuing a warning display to the selected medical staff when the cumulative exposure dose of the selected medical staff exceeds the dose limit, and FIG. 11 shows an example in which the cumulative exposure dose is the dose limit. An example of setting less than a medical worker as a candidate for selection was explained. However, it is not limited to this. The determination function 253 of the control circuit 25 issues a warning display to a medical worker whose cumulative exposure dose is equal to or higher than the dose limit, or a warning display and a medical worker whose cumulative exposure dose is less than the dose limit. May be set as a selection candidate and displayed.

Further, in FIGS. 8 and 11, in steps S89 and S115, an example of calculating the cumulative exposure dose after a preset period from the start date has been described. However, it is not limited to this. The control circuit 25 of the RIS terminal 20 may execute the exposure dose prediction function 252 and calculate the maximum exposure dose per day.

Specifically, the control circuit 25 adds "radiation dose of occupational exposure by examination" and "radiation dose of occupational exposure by past examination" to the actually measured exposure dose included in the information about the medical staff. Add up and calculate the cumulative exposure dose from the start date of the cumulative addition to the current examination. The control circuit 25 subtracts the calculated cumulative exposure dose from the dose limit of the medical staff, and calculates the possible exposure dose that can be exposed from the start date to the preset period.

Then, the control circuit 25 calculates the maximum daily exposure dose based on the possible exposure dose. A preset date after a period has elapsed and Y _B Year M _B Month D _B day, when the current date and Y _C Year M _C Month D _C day, the maximum dose of the current daily has the following formula Is calculated using.

"The maximum dose of the current per day" = "possible radiation dose" / _{(Y B} year _{M B} month _{D B} Date -Y _C year _{M C} month _{D C} day)
When the "current maximum daily dose" is calculated, the control circuit 25 executes the determination function 253. When the determination function 253 is executed, the control circuit 25 refers to the information on the past examination in step S810, and on the day of the request, the daily exposure dose of the selected medical worker is calculated as " Determine if it is greater than or equal to the current maximum daily dose.

Further, in step S116, the control circuit 25 refers to the information on the past examination, and on the day of the request, the medical engagement in which the daily exposure dose is less than the calculated “current maximum daily exposure dose”. Is set as a candidate for selection.

The determination function 253 of the control circuit 25 issues a warning display to the medical staff whose daily exposure dose is equal to or higher than the maximum exposure dose, or issues a warning display and the daily exposure dose. A medical worker whose dose is less than the maximum exposure dose may be set and displayed as a candidate for selection.

As described above, in the present embodiment, the exposure risk management support device including the RIS server 10 and the RIS terminal 20 is based on the inspection order information regarding the requested inspection, and the radiation dose that the medical staff is exposed to occupationally by the inspection. Is calculated. As a result, the amount of radiation that the medical staff is exposed to occupationally by the examination is calculated at the time of appointment for the examination of radiation medical treatment.

Therefore, according to the exposure risk management support device according to the present embodiment, it is possible to grasp the current exposure dose of the medical staff at the time of appointment for the examination of radiological treatment.

Further, in the present embodiment, the exposure risk management support device adjusts the exposure dose acquired based on the setting information related to the examination to the procedure used in the examination and / or the drug, the correction regarding the patient's condition, or the patient. By making amendments to the special treatments for the medical staff, the radiation dose to the occupational exposure of the medical staff is calculated by the requested examination. As a result, the accuracy of the calculated radiation amount is improved.

Further, in the present embodiment, the exposure risk management support device requests the exposure dose acquired based on the setting information related to the inspection by correcting the exposure dose according to the radiation dose actually measured in the past by the dosimetry device. The radiation dose that the medical staff is exposed to occupationally is calculated based on the tests performed. As a result, the accuracy of the calculated radiation amount is improved.

Further, in the present embodiment, the exposure risk management support device applies a correction to the exposure dose acquired based on the setting information related to the examination according to the place where the medical staff was located at the time of the examination. , The amount of radiation exposed to occupational exposure by medical staff is calculated based on the tests performed. As a result, the accuracy of the calculated radiation amount is improved.

Further, in the present embodiment, the exposure risk management support device calculates the cumulative value of the radiation dose that the medical staff is exposed to in a predetermined period, that is, the cumulative exposure dose, based on the calculated occupational exposure dose for each examination. Then, the exposure risk management support device issues a warning to the medical staff to engage in the examination when the calculated cumulative exposure dose exceeds the dose limit. As a result, it is possible to avoid having a medical worker with a high radiation dose engage in the examination when making an examination appointment for radiological treatment. In addition, it is possible to flatten the radiation dose to be exposed to occupations by conducting inspections by medical staff working in medical facilities.

Further, in the present embodiment, the exposure risk management support device calculates the maximum exposure dose that a medical worker can be exposed to in a day based on the calculated occupational exposure dose for each examination. Then, when the cumulative daily dose of the dose exposed by the examination to be engaged and the dose to be exposed by the examination to be engaged is equal to or more than the calculated maximum exposure dose, the exposure risk management support device is used by the medical staff. I try to warn you about engaging in inspections. As a result, it is possible to avoid having a medical worker with a high radiation dose engage in the examination when making an examination appointment for radiological treatment. In addition, it is possible to flatten the radiation dose to be exposed to occupations by conducting inspections by medical staff working in medical facilities.

Further, in the present embodiment, the exposure risk management support device uses the radiation dose actually measured by the dosimetry device when calculating the cumulative exposure dose or the maximum exposure dose that can be exposed in a day. .. As a result, the accuracy of the calculated cumulative dose or the maximum dose that can be exposed in a day is improved.

Further, in the present embodiment, the exposure risk management support device sets candidates who can engage in the examination based on the cumulative exposure dose or the maximum exposure dose that can be exposed in a day. Then, the exposure risk management support device displays the set candidate on the display circuit 22. As a result, the operator can select a person who can engage in the examination from those having a low radiation dose.

In the above embodiment, in the medical worker database 121, the medical worker ID includes the name, gender, date of birth, age, occupation, department, and dosimetry of the medical worker. Etc. have been described as an example. However, it is not limited to this. In the medical worker database 121, the current exposure dose and the like may be associated with the medical worker ID in addition to this information. In the present embodiment, the current exposure dose is the sum of the radiation doses actually measured from the start date of the cumulative addition to the latest report, and the radiation dose calculated by the RIS terminal 20 from the latest report to before the inspection request. It shall be calculated by the sum of and. FIG. 13 is a diagram illustrating an example of operation of the RIS server 10 and the RIS terminal 20 when the medical worker database 121 currently includes the exposure dose.

In FIG. 13, the control circuit 25 of the RIS terminal 20 executes the exposure dose calculation function 251 when a medical worker is selected by inputting necessary information by the operator. When the exposure dose calculation function 251 is executed, the control circuit 25 requests the RIS server 10 for the masters 124 to 128, the patient information exposure dose correction value, and the information about the selected medical staff (step S131). ..

When the control circuit 25 of the RIS terminal 20 receives the information of the masters 124 to 128, the patient information exposure dose correction value, and the information about the selected medical staff from the RIS server 10 (step S132), the occupation is performed by the requested examination. The amount of radiation to be exposed is calculated (step S133).

When the "radiation dose of occupational exposure by inspection" is calculated, the control circuit 25 executes the exposure dose prediction function 252. When the exposure dose prediction function 252 is executed, the control circuit 25 adds the "radiation dose of occupational exposure by examination" to the current exposure dose included in the information about the medical staff, and starts from the start date of the cumulative addition. Calculate the cumulative dose up to the test. The control circuit 25 divides the calculated cumulative exposure dose by the number of days from the start date to calculate the average daily exposure dose. The control circuit 25 calculates the cumulative exposure dose for a preset period from the start date based on the average exposure dose (step S134).

When the cumulative exposure dose for a preset period from the start date is calculated, the control circuit 25 executes the determination function 253. When the determination function 253 is executed, the control circuit 25 determines whether or not the calculated cumulative exposure dose is equal to or greater than the dose limit determined by law (step S135).

Further, the RIS server 10 and the RIS terminal 20 may present selectable candidates to the operator. FIG. 14 is a diagram illustrating the operation of the RIS server 10 and the RIS terminal 20 when presenting a candidate who can be selected for the requested inspection to the operator.

In FIG. 14, the control circuit 25 of the RIS terminal 20 executes the exposure dose calculation function 251 when the necessary information is input by the operator. When the exposure dose calculation function 251 is executed, the control circuit 25 requests the RIS server 10 for information on the masters 124 to 128, the patient information exposure dose correction value, and the medical staff (step S141).

When the control circuit 25 of the RIS terminal 20 receives the information of the masters 124 to 128, the patient information exposure dose correction value, and the information about the medical staff from the RIS server 10 (step S142), the radiation to be occupationally exposed by the requested examination. The amount is calculated for all health care workers registered (step S143).

When the "radiation dose of occupational exposure by inspection" is calculated, the control circuit 25 executes the exposure dose prediction function 252. When the exposure dose prediction function 252 is executed, the control circuit 25 adds the "radiation dose of occupational exposure by examination" to the current exposure dose included in the information about the medical staff, and starts from the start date of the cumulative addition. Calculate the cumulative dose up to the test. The control circuit 25 divides the calculated cumulative exposure dose by the number of days from the start date to calculate the average daily exposure dose. The control circuit 25 calculates the cumulative exposure dose for a preset period from the start date based on the average exposure dose (step S144). When the cumulative exposure dose for a preset period from the start date is calculated, the control circuit 25 executes the determination function 253. When the determination function 253 is executed, the control circuit 25 sets a medical worker whose cumulative exposure dose for a predetermined period from the start date is less than the dose limit as a selection candidate (step S145).

Then, the control circuit 25 causes the selection candidate to display a screen that can be selected by the operator on the display circuit 22 (step S146).

The current exposure dose stored in the medical worker database 121 is updated every time the examination is completed, for example, by using the distance information input at the end of the examination. FIG. 15 is a diagram illustrating an example of the operation of the RIS server 10 and the RIS terminal 20 when updating the current exposure dose stored in the medical worker database 121.

In FIG. 15, first, the RIS server 10 receives the examination execution information from the medical image diagnostic apparatus for which the examination has been completed (step S151). The RIS server 10 outputs the received inspection execution information to the RIS terminal 20 (step S152).

The RIS terminal 20 displays a screen on the display circuit 22 on which the operator can input necessary information regarding the inspection results based on the received inspection execution information (step S153). The operator refers to the screen displayed on the display circuit 22, and inputs information according to the location where the medical staff is located during the examination as distance information via the input interface circuit 21 (step S154).

The control circuit 25 of the RIS terminal 20 executes the exposure dose calculation function 251 when the distance information is input by the operator. When the exposure dose calculation function 251 is executed, the control circuit 25 transmits the masters 124 to 128, the patient information exposure dose correction value, the information on the medical staff who performed the examination, and the information on the performed examination to the RIS server 10. (Step S155).

Upon receiving the request from the RIS terminal 20, the RIS server 10 reads the masters 124 to 128 from the storage circuit 12. Further, the RIS server 10 reads out the patient information exposure dose correction value from the storage circuit 12 using the patient ID as a key, for example. Further, the RIS server 10 reads out information about the medical worker who performed the examination from the medical worker database 121 using the medical worker ID as a key. Further, the RIS server 10 reads out the information regarding the inspection performed from the actual database 123 using the order number as a key. The RIS server 10 outputs the read information of the masters 124 to 128, the patient information exposure dose correction value, the information about the medical staff who performed the examination, and the information about the performed examination to the RIS terminal 20 (step S156).

When the control circuit 25 of the RIS terminal 20 receives the information of the masters 124 to 128, the patient information exposure dose correction value, the information about the medical staff who performed the test, and the information about the test performed, the control circuit 25 is exposed to occupation by the test performed. The radiation dose is calculated (step S157).

Specifically, the control circuit 25 reads out the “occupational radiation dose per second” from the inspection exposure dose master 124, using the setting information related to the inspection included in the information regarding the performed inspection as a key.

When the "radiation dose occupationally exposed per second" is read from the inspection dose master 124, the control circuit 25 uses the procedure included in the information regarding the performed inspection, the drug, etc. as the key, and the inspection exposure dose correction value master 125. Read the "examination dose correction value" from. Further, when the "radiation dose occupationally exposed per second" is read from the examination exposure dose master 124, the control circuit 25 uses the patient condition included in the information regarding the performed examination as a key, and the patient condition exposure dose correction value master. The "patient condition exposure dose correction value" is read out from 126. The control circuit 25 adopts the maximum correction value from the “examination exposure dose correction value”, the “patient state exposure dose correction value”, and the “patient information exposure dose correction value”.

The medical worker who carried out the inspection reads out the "distance correction value" from the distance correction value master 127 using the distance information input in step S154 as a key.

In addition, the control circuit 25 calculates the average radiation dose for the last n months based on the measured value of the radiation dose included in the information about the medical staff. The control circuit 25 reads out the “medical worker correction value” from the medical worker correction value master 128 using the average exposure dose as a key.

The control circuit 25 corrects the “occupational exposure dose per second” read from the inspection exposure dose master 124 using the following equation.

"Corrected radiation dose for occupational exposure in one second" = "Radiation dose for occupational exposure in one second" x "maximum correction value" x "distance correction value" x "medical worker correction value"
The control circuit 25 calculates the inspection time from the inspection start time and the inspection end time. The control circuit 25 calculates the radiation dose occupationally exposed to the medical staff in the performed test by multiplying the corrected radiation dose by the test time using the following formula.

"Radiation dose of occupational exposure due to the inspection performed" = "Radiation dose of occupational exposure in one second corrected" x "Inspection time"
When the control circuit 25 calculates the "radiation dose of occupational exposure due to the inspection performed", the calculated "radiation dose of occupational exposure due to the inspection performed" is added to the cumulative exposure dose included in the information about the medical staff. The cumulative exposure dose including the exposure dose from the performed inspection is calculated (step S158). When the cumulative exposure dose is calculated, the control circuit 25 executes the registration function 254 and outputs an instruction to register the calculated cumulative exposure dose to the RIS server 10 (step S159).

Upon receiving the registration instruction from the RIS terminal 20, the RIS server 10 registers the cumulative exposure dose calculated by the RIS terminal 20 in the medical worker database 121 (step S1510).

The word "processor" used in the above description means, for example, a CPU (central processing unit), a GPU (Graphics Processing Unit), or an application specific integrated circuit (ASIC), or a programmable logic device (for example, an application specific integrated circuit (ASIC)). , Simple Programmable Logic Device (SPLD), Complex Programmable Logic Device (CPLD), and Field Programmable Gate Array (FPGA). The processor realizes the function by reading and executing the program stored in the storage circuit. It should be noted that each processor of the present embodiment is not limited to the case where each processor is configured as a single circuit, and a plurality of independent circuits may be combined to form one processor to realize its function. Good. Further, the plurality of components in FIG. 2 may be integrated into one processor to realize the function.

Although embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. This embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. This embodiment and its modifications are included in the scope and gist of the invention as well as in the scope of the invention described in the claims and the equivalent scope thereof.

10 ... RIS server, 11 ... communication interface circuit, 12 ... storage circuit, 121 ... medical worker database, 122 ... reservation database, 123 ... actual database, 124 ... test dose master, 125 ... test dose correction value master, 126 ... Patient condition Exposure dose correction value master, 127 ... Distance correction value master, 128 ... Medical worker correction value master, 13 ... Control circuit, 20 ... RIS terminal, 21 ... Input interface circuit, 22 ... Display circuit, 23 ... Communication interface Circuit, 24 ... storage circuit, 25 ... control circuit, 251 ... exposure dose calculation function, 252 ... exposure dose prediction function, 253 ... judgment function, 254 ... registration function.

Claims (11)

Based on the inspection order information related to the requested inspection, the exposure dose acquired based on the setting information related to the inspection is corrected according to the radiation dose actually measured in the past by the dosimetry device. An exposure risk management support device equipped with an exposure dose calculation unit that calculates the amount of radiation that a medical worker is exposed to occupationally. The radiation dose calculation unit adjusts the radiation dose acquired based on the setting information related to the test to the procedure used in the test and / or the drug, the patient's condition, or a special treatment for the patient. The exposure risk management support device according to claim 1, wherein the radiation dose to which a medical worker is occupationally exposed by the above-mentioned examination is calculated by applying an amendment. The radiation dose calculation unit corrects the radiation dose acquired based on the setting information according to the place where the medical worker was located at the time of the test, so that the medical worker can perform the test. The exposure risk management support device according to claim 1 or 2 , which calculates the amount of radiation to be exposed to occupation. An exposure dose prediction unit that calculates the cumulative value of the radiation dose that the medical staff is exposed to in a predetermined period based on the radiation dose that the medical staff is exposed to occupationally by the above inspection.
The exposure risk management support according to any one of claims 1 to 3 , further comprising a determination unit that issues a warning against the medical worker engaging in the examination when the cumulative value exceeds the dose limit. apparatus. The fourth aspect of claim 4 , wherein the determination unit issues a warning display after issuing the warning, and sets a medical worker whose cumulative value is less than the dose limit as a candidate who can engage in the examination. Exposure risk management support device. An exposure dose prediction unit that calculates the cumulative value of the radiation dose that the medical staff is exposed to in a predetermined period based on the radiation dose that the medical staff is exposed to occupationally by the above inspection.
The exposure risk management support device according to any one of claims 1 to 3 , further comprising a determination unit for setting a medical worker whose cumulative value is less than the dose limit as a candidate who can engage in the examination. The exposure risk management support device according to any one of claims 4 to 6 , wherein the exposure dose prediction unit calculates the cumulative value by using the radiation dose measured by a dosimetry device. Based on the radiation dose that the medical staff is exposed to occupationally by the above inspection, the radiation dose prediction unit that calculates the maximum radiation dose that the medical staff can be exposed to in a day, and
Claim 1 further includes a determination unit that issues a warning to the medical worker to engage in the test when the radiation dose to be occupationally exposed on the day when the test is requested is equal to or higher than the maximum dose. The exposure risk management support device according to any one of 3 to 3 . After issuing the warning or issuing a warning display, the determination unit can engage in the inspection by a medical worker whose occupational radiation dose is less than the maximum exposure dose on the day when the inspection is requested. The exposure risk management support device according to claim 8 , which is set as a candidate. Based on the radiation dose that the medical staff is exposed to occupationally by the above inspection, the radiation dose prediction unit that calculates the maximum radiation dose that the medical staff can be exposed to in a day, and
Claims 1 to 3 further include a determination unit that sets a medical worker whose occupational radiation dose is less than the maximum radiation dose on the day when the test is requested as a candidate who can engage in the test. The exposure risk management support device described in any of them. The exposure risk management support device according to any one of claims 8 to 10 , wherein the exposure dose prediction unit calculates the maximum exposure dose by using the radiation dose measured by a dosimetry device.