JP2019141294A - Risk evaluation device and risk evaluation method - Google Patents

Abstract

To provide a risk evaluation device and a risk evaluation method that are capable of automatically evaluating a risk of imaging by automatically acquiring information on a contraindication substance attached to a subject.SOLUTION: According to an embodiment, a risk evaluation device includes: an order information acquisition unit for acquiring order information for requesting imaging of a subject; a contraindication substance information acquisition unit for acquiring information on a contraindication substance attached to the subject; an evaluation unit for evaluating a risk of imaging the subject according to the order information on the basis of the information on the contraindication substance attached to the subject; and an output unit for outputting information based on an evaluation result from the evaluation unit.SELECTED DRAWING: Figure 2

Description

  Embodiments described herein relate generally to a risk evaluation apparatus and a risk evaluation method.

  Known modalities for imaging a subject such as a patient include, for example, an X-ray CT (Computed Tomography) apparatus, an MRI (Magnetic Resonance Imaging) apparatus, an X-ray diagnostic apparatus, and a nuclear medicine diagnostic apparatus. Each of these modalities is contraindicated.

  For example, in an MRI apparatus, since the subject is placed in a very strong magnetic field, a magnetic material such as a metal attached to the subject is contraindicated. Also, in X-ray diagnostic apparatuses and X-ray CT apparatuses that perform imaging using an X-ray source, it is known that if a metal is attached to a subject, artifacts are generated in the X-ray image and the image quality deteriorates. In this type of modality, metals are contraindicated. In addition, it is desirable to avoid performing a test using a contrast medium for a patient having a contrast medium allergy.

  For this reason, it is important to confirm information on contraindications such as whether the patient does not contain any contraindications such as metal or that the contrast agent test is a contraindication before imaging. .

  However, when photographing with a modality, in order to confirm whether or not metal is attached to the patient, it is troublesome to directly ask the patient or the patient's family every time. Also, there may be cases where the patient cannot be directly inquired at the time of imaging, such as when the patient is transported to a hospital in an emergency and there is no awareness of the patient. In this case, it is difficult for the person who performs the imaging to grasp the risk of danger of the patient and the risk of image quality degradation that may occur in imaging due to contraindications.

JP 2010-194101 A

  The problem to be solved by the present invention is to provide a risk evaluation apparatus and a risk evaluation method capable of automatically acquiring information on contraindications attached to a subject and automatically evaluating a risk in imaging. It is.

  In order to solve the above-described problem, a risk evaluation device according to an embodiment of the present invention includes an order information acquisition unit that acquires order information for requesting imaging of a subject, and a contraindication attached to the subject. A contraindication information acquisition unit that acquires information, an evaluation unit that evaluates a risk of imaging the subject according to the order information based on information on the contraindications attached to the subject, and an evaluation result by the evaluation unit And an output unit for outputting information based on the information.

The block diagram which shows an example of the risk evaluation system containing the risk evaluation apparatus which concerns on 1st Embodiment of this invention. FIG. 3 is a schematic block diagram showing an example of functions realized by a processor of the processing circuit according to the first embodiment. Explanatory drawing which shows an example of metal information DB. Explanatory drawing which shows an example of contraindication information DB classified by order. The flowchart which shows an example of the procedure at the time of acquiring automatically the information of the contraindication attached to the subject, and automatically evaluating the risk in imaging | photography by the processor of the processing circuit which concerns on 1st Embodiment. The subroutine flowchart which shows an example of the procedure of the inspection risk evaluation process using metal information DB performed by step S20 of FIG. Explanatory drawing which shows an example of a risk evaluation image. The schematic block diagram which shows the example of an implementation | achievement function by the processor of the processing circuit which concerns on 2nd Embodiment. The processor of the processing circuit according to the second embodiment automatically acquires information on contraindications attached to the subject, automatically evaluates the risk in imaging, and generates a metal information DB. The flowchart which shows an example. The subroutine flowchart which shows an example of the procedure of the registration process performed to metal information DB performed by step S1 of FIG. The processor of the processing circuit according to the third embodiment automatically acquires information on contraindications attached to the subject, automatically evaluates the risk in imaging, and generates a metal information DB in advance to evaluate the risk. The flowchart which shows an example of the procedure at the time of producing | generating a list. The subroutine flowchart which shows an example of the procedure of the 2nd inspection risk evaluation process performed by step S40 of FIG. Explanatory drawing which shows an example of a risk evaluation list. FIG. 12 is a subroutine flowchart showing an example of a procedure of a second warning process executed in step S60 of FIG.

  Embodiments of a risk evaluation apparatus and a risk evaluation method according to the present invention will be described with reference to the accompanying drawings. In addition, the risk evaluation apparatus which concerns on embodiment described below is realizable with a radiology information system (RIS: Radiology Information System), for example.

(First embodiment)
FIG. 1 is a block diagram illustrating an example of a risk evaluation system 10 including a risk evaluation apparatus 11.

  As shown in FIG. 1, the risk evaluation system 10 includes risk evaluation apparatuses 11 and 12 realized by RIS, a medical image storage and communication system (PACS) 13, and a hospital information system (HIS). Hospital Information System) 14.

  The risk evaluation apparatuses 11 and 12 are installed in a hospital, for example, one by one, and are realized by RIS. Since the risk evaluation apparatuses 11 and 12 have the same configuration and operation, the risk evaluation apparatus 11 will be described below, and the description of the risk evaluation apparatus 12 will be omitted.

  The PACS 13 includes an image server for long-term storage of medical images, and is connected to various modalities and the risk evaluation device 11 via a network so that data can be transmitted and received. The HIS 14 receives the order of the inspection and gives it to the risk evaluation apparatus 11.

  The risk evaluation apparatus 11 includes an input circuit 21, a display 22, a storage circuit 23, a network connection circuit 24, a processing circuit 25, a metal information database (hereinafter referred to as metal information DB) 31, an order-specific contraindication information database (hereinafter referred to as an order-specific contraindication). And an inspection information database (inspection information DB) 33.

  The metal information DB 31, the order-specific contraindication information DB 32, and the inspection information DB 33 may not be provided in the risk evaluation apparatus 11. In this case, the metal information DB 31, the order-specific contraindication information DB 32, and the inspection information DB 33 may be connected to the risk evaluation apparatus 11 via a network so that data can be transmitted and received.

  The input circuit 21 includes a general input device such as a trackball, a switch button, a mouse, a keyboard, or a numeric keypad, and outputs an operation input signal corresponding to a user operation to the processing circuit 25. The display 22 is configured by a general display output device such as a liquid crystal display or an OLED (Organic Light Emitting Diode) display.

  The storage circuit 23 has a configuration including a recording medium readable by a processor such as a magnetic or optical recording medium or a semiconductor memory, and stores a program used by the processing circuit 25, for example.

  The network connection circuit 24 implements various information communication protocols corresponding to the network form. The network connection circuit 24 connects the risk evaluation apparatus 11 and other electrical devices according to these various protocols. Here, the network means the entire information communication network using telecommunications technology. In addition to a wireless / wired LAN such as a hospital basic LAN (Local Area Network) and the Internet network, a telephone communication line network, an optical fiber communication network, Includes cable and satellite communication networks.

  Further, the network connection circuit 24 can communicate with other devices such as the risk evaluation apparatus 12, the PACS 13 and the HIS 14 in accordance with a medical image standard such as DICOM (Digital Imaging and Communications in Medicine). In this case, the metal information DB 31 and the order-specific contraindication information DB 32 may store registered data in a format compliant with, for example, AIM DICOM Structured Reporting (DICOM SR) combining AIM and DICOM.

  The processing circuit 25 reads out and executes the program stored in the storage circuit 23 to automatically acquire information on contraindications attached to the subject and automatically evaluate the risk in imaging. Is a processor that executes

  FIG. 2 is a schematic block diagram showing an example of functions realized by the processor of the processing circuit 25. As shown in FIG. 2, the processor of the processing circuit 25 realizes an order information acquisition function 41, a contraindication information acquisition function 42, a risk evaluation function 43, a warning output function 44, and an additional information reception function 45. Each of these functions is stored in the storage circuit 23 in the form of a program.

  In addition, although this embodiment demonstrates the example in case each function 41-45 is implement | achieved by the processing circuit 25 of the risk evaluation apparatus 11, these functions 41-45 of the risk evaluation apparatus 11 implement | achieved by RIS etc. May be realized by an external device having at least a processor and a storage circuit, which is independent from the risk assessment device 11, such as a hospital server, a cloud console, and a workstation connected to a network.

  The order information acquisition function 41 acquires order information that requests imaging of the subject. Specifically, the order information acquisition function 41 receives, for example, an inspection order issuance request which is inspection reservation information from the HIS 14, and acquires order information by referring to the inspection information DB 33 according to the received inspection order. The order information includes, for example, information on the subject to be imaged, as well as information on the modality to be imaged, examination protocol, and imaging region.

  The inspection information DB 33 may be included in the HIS 14. In this case, the HIS 14 may issue specific order information, and the order information acquisition function 41 may acquire the order information. In this case, if the type of order information held by the HIS 14 and the type of order information held by the risk evaluation device 11 are associated in advance, the order corresponding to the order information is received according to the order information received from the HIS 14. The order information acquisition function 41 may issue the information.

  The contraindication information acquisition function 42 acquires information on predetermined contraindications attached to the subject from the metal information DB 31.

  FIG. 3 is an explanatory diagram showing an example of the metal information DB 31. The metal information DB 31 stores information on contraindications attached to the subject in association with the subject information (for example, patient ID) and X-ray image information (for example, image ID).

  The information on contraindications stored in the metal information DB 31 includes information on the metal attached to the subject. The metal information includes, for example, the anatomical position to which the metal is attached, the size and shape of the metal, and product information (product name, product number) of the metal. Such metal information is obtained, for example, by performing image analysis on an X-ray image generated by X-ray imaging of a subject in advance. The image information associated with the contraindicated information in the metal information DB 31 is image information of an X-ray image in which the metal information is generated. Here, the X-ray image means an image generated based on the X-ray transmitted through the subject. X-ray images include X-ray fluoroscopic images and tomosynthesis images based on X-ray diagnostic apparatuses such as X-ray TV apparatuses, X-ray angio apparatuses, and mammography apparatuses, and X-rays based on X-ray CT apparatuses. CT images.

  The image information associated with the contraindicated information stored in the metal information DB 31 includes X-ray images such as the date and time of the X-ray image from which the metal has been extracted by image analysis, and information on the modality from which the X-ray image was captured. Additional information of the line image may be included. The information on the imaging date and time of the X-ray image from which the metal is extracted by image analysis can be used as information indicating the time when the metal is attached to the subject.

  The metal information DB 31 may be widely used as a contraindication storage unit, and in this case, for example, contraindication information other than metal such as information on the contrast agent allergy of the subject may be stored.

  The risk evaluation function 43 searches the order-specific contraindication information DB 32 based on the information on the contraindications attached to the subject acquired by the contraindication information acquisition function 42, and evaluates the risk of imaging the subject according to the order information. .

  FIG. 4 is an explanatory diagram showing an example of the order-specific contraindication information DB 32. The order-specific contraindication information DB 32 is a database created in advance regardless of the subject. In FIG. 4, “*” indicates a wild card representing an arbitrary character string.

  The order-specific contraindication information DB 32 stores risk evaluation information in which order information, metal information (information on the X-ray high absorption region), and an action corresponding to a risk are associated with each other. The order information includes modality, inspection protocol, and imaging part information. The metal information is information on the X-ray high absorption region, and the metal information includes anatomical position, target size lower limit, metal product information (information for specifying the target medical device / jig), image analysis X-ray image supplementary information (target time), such as information on the imaging date and time of the X-ray image from which the metal has been extracted, is included.

  The warning output function 44 generates a risk evaluation image indicating information based on the evaluation result by the risk evaluation function 43 and displays the image on the display 22 or outputs the information by voice through a speaker (not shown).

  The additional information reception function 45 is information indicating that a contraindication included in the risk evaluation image has already been removed (hereinafter referred to as a removal flag), or a contraindication included in the risk evaluation image conforms to the order information. Information indicating that it can be ignored in photographing (hereinafter referred to as an ignorance flag) is received from the user via the input circuit 21.

  Next, an example of the operation of the risk evaluation system 10 including the risk evaluation device 11 will be described. In the following description, an example in which the metal information DB 31 registers only metal information as contraindication information, and no contraindication information other than metal such as information on contrast agent allergy is registered.

  FIG. 5 is a flowchart showing an example of a procedure when the processor of the processing circuit 25 automatically acquires information on contraindications attached to the subject and automatically evaluates risk in imaging. In FIG. 5, reference numerals with numbers added to S indicate steps in the flowchart.

  First, in step S10, the order information acquisition function 41 receives an inspection order issue request received from the HIS 14, and acquires order information by referring to the inspection information DB 33 according to the received inspection order.

  Next, in step S20, the function 42-45 of the processing circuit 25 evaluates the risk when photographing is performed according to the order information using the metal information DB 31 and the order-specific contraindication information DB, and information corresponding to the risk evaluation result is obtained. The output process (inspection risk evaluation process) is executed.

  With the above procedure, information on contraindications attached to the subject can be automatically acquired from the metal information DB 31, and the risk in the case of imaging according to the order information can be automatically evaluated.

  FIG. 6 is a subroutine flowchart showing an example of step S20 of FIG.

  When the order information is acquired in step S10, in step S21, the contraindication information acquisition function 42 acquires information on the metal as a predetermined incompatible material attached to the subject from the metal information DB 31.

  In addition, when the information on the metal associated with the subject is not registered in the metal information DB 31, it is not necessary to perform processing (warning processing) for outputting information according to the risk evaluation result regarding contraindications, and a series of procedures. May be terminated.

  Next, in step S22, the risk evaluation function 43 uses the order information acquired by the order information acquisition function 41 and the metal information registered in the metal information DB 31 in association with the subject included in the order information. The in-order contraindication information DB 32 is searched, and the risk is evaluated for each piece of metal information associated with the subject and registered in the metal information DB 31. Since the order-specific contraindication information DB 32 shown in FIG. 6 registers actions corresponding to risk assessment, the risk assessment function 43 extracts actions as operations corresponding to risk assessment.

Next, in step S23, the warning output function 44 generates a risk evaluation image indicating information based on the evaluation result by the risk evaluation function 43 and displays the image on the display 22, or the information is voiced through a speaker (not shown). Output. For example, the warning output function 44 generates a risk evaluation image based on the action extracted by the risk evaluation function 43 and displays it on the display.
FIG. 7 is an explanatory diagram illustrating an example of a risk evaluation image.

  The warning output function 44 displays a list of risk evaluation results by the risk evaluation function 43 for each piece of metal information registered in the metal information DB 31 in association with the subject included in the order information. Further, as shown in FIG. 7, the warning output function 44 maps the risk evaluation result of each metal to the position on the human body model corresponding to the anatomical position where each metal is attached. An evaluation image is generated and displayed on the display 22.

  Next, in step S24, the additional information reception function 45 performs, for each metal, a removal flag (see “removed” in FIG. 7), an ignorance flag (see “ignore OK” in FIG. 7), a user opinion on the metal, and the like. Remarks including “” are received from the user via the input circuit 21. These flag information and remark information (hereinafter referred to as additional information) may be associated with the metal information in the metal information DB so that it can be used in the risk assessment after the next time (step S25).

  As shown in FIG. 7, when there are a plurality of pieces of metal information for the same subject, risk evaluation may be performed for all pieces of metal information regardless of the imaging region included in the order information. In this case, the warning output function 44 may generate a risk evaluation image so as to emphasize the risk evaluation for the metal information attached to the imaging region included in the order information more than other risk evaluations (FIG. 7). (See “Risk assessment results: photography prohibited”).

  Further, when the metal information is not registered in the metal information DB 31, the processing circuit 25 is provided in another risk evaluation device 12 that is installed in another hospital and has the same configuration and operation as the risk evaluation device 11, for example. If the metal information DB is searched and there is metal information associated with the subject in the metal information DB, the processing shown in FIG. 6 may be executed using the metal information.

  The risk evaluation apparatus 11 according to the present embodiment can automatically acquire information on contraindications attached to the subject from the metal information DB 31 and can automatically evaluate the risk when imaging is performed according to the order information. . For this reason, there is no need to consult the patient or the patient's family directly to obtain information on contraindications, so the patient is taken to the hospital in an emergency and the patient is not aware of the patient. Even if direct inquiry is not possible, information on contraindications can be obtained easily and quickly.

  Therefore, according to the risk evaluation apparatus 11 which concerns on this embodiment, the risk of implementing a contraindicated test | inspection with respect to a patient can be reduced significantly.

  Further, the contents of the order-specific contraindication information DB 32 do not depend on the subject. Therefore, the contents of the order-specific contraindication information DB 32 can be flexibly updated. For example, even when the latest modality is put on the market, additional writing can be easily handled.

(Second Embodiment)
Next, a second embodiment of the risk evaluation apparatus 11 and the risk evaluation method according to the present invention will be described.

  FIG. 8 is a schematic block diagram showing an example of functions realized by the processor of the processing circuit 25 according to the second embodiment.

  The risk evaluation apparatus 11 shown in the second embodiment is different from the risk evaluation apparatus 11 shown in the first embodiment in that it has a function of creating the metal information DB 31. Since other configurations and operations are not substantially different from those of the risk evaluation apparatus 11 according to the first embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.

  In other words, in the first embodiment described above, the configuration relating to the generation of the metal information DB 31 does not necessarily have to be provided in the risk evaluation device 11, and may be provided in the PACS 13, for example.

  As shown in FIG. 8, the processor of the processing circuit 25 implements an image acquisition function 51, an extraction function 52, a position analysis function 53, a product analysis function 54, and a registration function 55 in addition to the functions 41-45 shown in FIG. To do. Each of these functions is stored in the storage circuit 23 in the form of a program.

  The image acquisition function 51 acquires an X-ray image of the subject from the PACS 13. The extraction function 52 extracts the X-ray high absorption region of the X-ray image of the subject as a metal (incompatible material) attached to the subject.

  The position analysis function 53 analyzes the X-ray image of the subject to analyze the anatomical position in the subject of the X-ray high absorption region extracted as metal (see “target anatomical position” in FIG. 6). Is analyzed.

  The product analysis function 54 estimates the shape including the size of the X-ray high absorption region extracted as metal by performing image processing on the X-ray image of the subject, and the product corresponding to the X-ray high absorption region (FIG. 6 (see “Information for Identifying Target Medical Device / Jig”)).

  The registration function 55 associates the analysis result by the position analysis function 53 of the metal extracted as the contraindication and the analysis result by the product analysis function 54 with the information of the subject together with the incidental information including the photographing date and time of the X-ray image. Register in the metal information DB 31.

  In FIG. 9, the processor of the processing circuit 25 according to the second embodiment automatically acquires information on contraindications attached to the subject, automatically evaluates the risk in imaging, and generates the metal information DB 31. It is a flowchart which shows an example of the procedure at the time of doing. In FIG. 9, reference numerals with numbers added to S indicate steps in the flowchart.

  In step S1, the functions 51-55 of the processing circuit 25 execute a process of registering the metal information extracted from the X-ray image of the subject in the metal information DB 31.

  The processing in step S10 and step S20 is as described above with reference to FIG.

  By the above procedure, as in the risk evaluation apparatus 11 according to the first embodiment, information on contraindications attached to the subject is automatically obtained from the metal information DB 31, and the risk when imaging is performed according to the order information. In addition to being able to evaluate automatically, information on contraindications attached to the subject can be automatically registered in the metal information DB 31 in advance.

  FIG. 10 is a subroutine flowchart showing an example of a procedure of registration processing in the metal information DB 31 executed in step S1 of FIG.

  First, in step S <b> 11, when the X-ray image is registered in the PACS 13, the image acquisition function 51 acquires an X-ray image of the subject from the PACS 13.

  Next, in step S12, the extraction function 52 extracts the X-ray high absorption region of the X-ray image as a metal (incompatible material) attached to the subject.

  Next, in step S13, the position analysis function 53 analyzes the anatomical position in the subject of the X-ray high absorption region extracted as metal by performing image analysis on the X-ray image of the subject.

  Next, in step S14, the product analysis function 54 estimates the shape including the size of the X-ray high absorption region extracted as metal by performing image processing on the X-ray image of the subject, and X-ray high absorption. Analyze the product corresponding to the area.

  Next, in step S15, the registration function 55 displays the analysis result by the position analysis function 53 of the metal extracted as a contraindication and the analysis result by the product analysis function 54 together with the incidental information including the imaging date and time of the X-ray image. The information is registered in the metal information DB 31 in association with the subject information. As a result, as described above, the metal information registered in the metal information DB 31 can include anatomical position information, metal shape and other shapes, metal product information, and X-ray image supplementary information.

  With the above procedure, every time an X-ray image is registered in the PACS 13, the metal information DB 31 can be generated by registering the metal information associated with the subject information in the metal information DB 31.

  Note that the procedure shown in FIG. 10 may be executed at the timing when the order information is received in step S10. That is, the execution order of steps S1 and S10 in the procedure shown in FIG. 9 may be reversed. In this case, the image acquisition function 51 acquires an X-ray image of the subject from the PACS 13 based on the subject information included in the order information. Then, the functions 52-55 execute the process shown in step S12-15 of FIG. 10 on the acquired X-ray image. Further, when the procedure shown in FIG. 10 is executed at the timing when the order information is received in step S10, the image acquisition function 51 already stores the image information of the X-ray image in the metal information DB 31 among the X-ray images of the subject. The X-ray image in which the metal information is registered in association with the incidental information may not be acquired from the PACS 13 in order to prevent duplication of processing.

  The risk evaluation device 11 according to the second embodiment also has the same effects as the risk evaluation device 11 according to the first embodiment. Moreover, according to the risk evaluation apparatus 11 which concerns on 2nd Embodiment, the information of the contraindication attached to the subject can be automatically registered into metal information DB31 beforehand. For this reason, the metal information DB 31 can be created very easily and quickly compared to the case where the metal information DB 31 is manually created through an inquiry to a patient or the like.

(Third embodiment)
Next, a third embodiment of the risk evaluation apparatus 11 and the risk evaluation method according to the present invention will be described.

  The risk evaluation device 11 shown in the third embodiment generates the metal information DB 31 in advance before receiving the order information, and generates a risk evaluation list for each metal information using the order-specific contraindication information DB 32. Thus, it is different from the risk evaluation apparatus 11 according to the second embodiment. Since other operations are not substantially different from the risk evaluation apparatus 11 according to the first embodiment, a duplicate description is omitted.

  The risk evaluation list according to the third embodiment is generated for each subject. On the other hand, the risk evaluation DB described in the first and second embodiments is a database that does not depend on the subject.

  In FIG. 11, the processor of the processing circuit 25 according to the third embodiment automatically acquires information on contraindications attached to the subject, automatically evaluates the risk in imaging, and stores the metal information DB 31 in advance. It is a flowchart which shows an example of the procedure at the time of producing | generating and producing a risk evaluation list | wrist. In FIG. 11, a symbol with a number added to S indicates each step of the flowchart.

  After performing the registration process to the metal information DB 31 in the same manner as the procedure shown in FIG. 9 in step S1, the risk evaluation function 43 generates a risk evaluation list using the order-specific contraindication information DB 32 in step S40 (first process). 2 inspection risk evaluation process).

  Next, in step S50, as in step S10 of the procedure shown in FIG. 5 and FIG. 9, the order information acquisition function 41 accepts an inspection order issue request received from the HIS 14, and inspects information according to the accepted inspection order. Order information is acquired with reference to DB33.

  Next, in step S60, the functions 42-45 of the processing circuit 25 execute a warning process (second warning process) according to the risk when shooting is performed according to the order information, using the risk evaluation list.

  FIG. 12 is a subroutine flowchart showing an example of the procedure of the second inspection risk evaluation process executed in step S40 of FIG. FIG. 13 is an explanatory diagram showing an example of the risk evaluation list.

  When the object information and the metal information are stored in association with each other in the metal information DB 31 in step S1, the risk evaluation function 43, based on the metal information registered in the metal information DB 31, in step S41. Is generated (see FIG. 13). At this time, the risk evaluation function 43 may use the order-specific contraindication information DB 32 (see FIG. 6). That is, the risk evaluation function 43 may search the order-specific contraindication information DB 32 based on the metal information registered in the metal information DB 31 and generate a risk evaluation list using the extracted information. The conditions, risk evaluation, and risk evaluation result (status) in the example of the risk evaluation list shown in FIG. 13 are information (metal information) and order information of the X-ray high absorption region in the example of the contraindication information DB 32 by order shown in FIG. , And action respectively.

  Next, in step S42, the risk evaluation function 43 associates the generated risk evaluation list (see FIG. 13) with the subject information.

  With the above procedure, every time an X-ray image is registered in the PACS 13, a risk evaluation list associated with the subject can be generated.

  In addition, since metal information should just be acquired from an X-ray image in generation | occurrence | production of a risk evaluation list | wrist, since metal information DB31 is not necessarily utilized, in this embodiment, among the procedures shown in FIG. The procedure of S15 may not be executed.

  FIG. 14 is a subroutine flowchart showing an example of the procedure of the second warning process executed in step S60 of FIG. Steps equivalent to those in FIG. 6 are denoted by the same reference numerals, and redundant description is omitted.

  When the order information is acquired in step S50, in step S61, the contraindicated information acquisition function 42 is determined in advance from the risk evaluation list associated with the subject that is the target of the order information. Get information on metals as contraindications. If the information on the metal attached to the subject is not registered in the risk assessment list, or if the risk assessment list does not exist in the first place, there is no need to perform warning processing for contraindications, and the series of procedures is completed. May be.

  Next, in step S62, the risk evaluation function 43 searches the risk evaluation list based on the order information (inspection protocol or the like), and extracts a risk evaluation result corresponding to the order information.

  Next, in step S63, the warning output function 44 generates a risk evaluation image indicating information based on the risk evaluation result extracted by the risk evaluation function 43 and displays the image on the display 22, or via a speaker (not shown). The information is output by voice.

  With the above procedure, a warning regarding contraindications can be given to the user using a risk evaluation list generated in advance.

  The risk evaluation device 11 according to the third embodiment has the same effects as the risk evaluation device 11 according to the first embodiment. In addition, according to the risk evaluation apparatus 11 according to the third embodiment, it is possible to generate a subject-specific risk evaluation list in which a metal attached to a subject in advance and a risk evaluation result are directly associated with each other.

  Of the functions of the risk evaluation function 43, a function for generating a risk evaluation list, that is, a function related to steps S1 and S40 in FIG. 11 may be provided in the PACS 13, for example.

  According to at least one embodiment described above, information on contraindications attached to a subject can be automatically acquired, and a risk in imaging can be automatically evaluated.

  In addition, the order information acquisition function 41, the contraindication information acquisition function 42, the risk evaluation function 43, the warning output function 44, the additional information reception function 45, the image acquisition function 51, the extraction function 52, and the position analysis of the processing circuit 25 in this embodiment. The function 53, the product analysis function 54, and the registration function 55 are an order information acquisition unit, a determination unit, an evaluation unit, an output unit, an additional information reception unit, an image acquisition unit, an extraction unit, a position analysis unit, It is an example of a product analysis part and a registration part. Further, the metal information DB 31 and the order-specific contraindication information DB in the present embodiment are examples of a contraindication storage unit and an evaluation information storage unit in the claims, respectively.

  In the above embodiment, the term “processor” means, for example, a dedicated or general-purpose CPU (Central Processing Unit), GPU (Graphics Processing Unit), or an application specific integrated circuit (ASIC). It shall mean a circuit such as a programmable logic device (for example, a simple programmable logic device (SPLD), a complex programmable logic device (CPLD), and an FPGA). The processor implements various functions by reading and executing a program stored in the storage medium.

  In the above embodiment, an example in which a single processor of a processing circuit realizes each function has been described. However, a processing circuit is configured by combining a plurality of independent processors, and each processor realizes each function. Also good. Further, when a plurality of processors are provided, the storage medium for storing the program may be provided for each processor individually, or one storage medium stores the programs corresponding to the functions of all the processors in a lump. Also good.

  In addition, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 ... Risk evaluation system 11, 12 ... Risk evaluation apparatus 21 ... Input circuit 22 ... Display 25 ... Processing circuit 31 ... Metal information DB (incompatible materials storage part)
32 ... Contraindication information DB by order (evaluation information storage unit)
41 ... Order information acquisition function 42 ... Contraindicated material information acquisition function 43 ... Risk evaluation function 44 ... Warning output function 45 ... Additional information reception function 51 ... Image acquisition function 52 ... Extraction function 53 ... Position analysis function 54 ... Product analysis function 55 ... Registration function

Claims (15)

An order information acquisition unit that acquires order information for requesting imaging of a subject; a contraindication information acquisition unit that acquires information on incompatible materials attached to the subject;
An evaluation unit that evaluates a risk of imaging the subject according to the order information based on information on the contraindications attached to the subject;
An output unit for outputting information based on the evaluation result by the evaluation unit;
Risk assessment device with A contraindication storage unit for storing information on the contraindications attached to the subject in association with the information on the subject;
Further comprising
The contraindication information acquisition unit,
When the information on the contraindications is associated with the subject and stored in the contraindication storage unit, the information on the contraindications is stored as information on the contraindication attached to the subject from the contraindication storage unit. get,
The risk evaluation apparatus according to claim 1. Information on the contraindications is
Including information of an X-ray high absorption region included in the X-ray image of the subject,
The risk evaluation apparatus according to claim 1 or 2. The order information includes an imaging region of the subject,
The evaluation unit is
Using the information on the contraindications attached to the imaging region of the subject included in the order information, and evaluating the risk of imaging the subject according to the order information;
The risk evaluation apparatus according to any one of claims 1 to 3. The evaluation unit is
Further, based on the time when the contraindicated material is attached to the subject, the risk of imaging the subject according to the order information is evaluated.
The risk evaluation apparatus according to any one of claims 1 to 4. An evaluation information storage unit that stores risk evaluation information that associates the contraindications, order information, and risk with each other
Further comprising
The evaluation unit is
Using the risk evaluation information stored in the evaluation information storage unit, to evaluate the risk of imaging the subject according to the order information;
The risk evaluation apparatus according to any one of claims 1 to 5. A contraindication storage unit for storing information on the contraindications attached to the subject in association with the information on the subject;
Further comprising
An image acquisition unit for acquiring an X-ray image of the subject;
An extraction unit that extracts the X-ray high absorption region of the X-ray image of the subject as the contraindication attached to the subject;
A registration unit for registering information on the X-ray high absorption region extracted as the contraindication in the contraindication storage unit in association with the information on the subject;
Further equipped with,
The risk evaluation apparatus according to any one of claims 1 to 6. A position analysis unit for analyzing an anatomical position in the subject of the X-ray high absorption region extracted as the contraindication,
A product analysis unit for analyzing a product corresponding to the X-ray high absorption region based on the shape of the X-ray high absorption region extracted as the contraindication;
Further comprising
The registration unit
As the information of the X-ray high absorption region, the analysis result of the anatomical position, the analysis result of the product, and incidental information including the imaging date and time of the X-ray image are associated with the information of the subject. Register in the contraindications storage,
The risk evaluation apparatus according to claim 7. The image acquisition unit, the extraction unit, and the registration unit are:
It operates at the timing when the X-ray image of the subject is taken and stored in an image server, or at the timing when the order information is received,
The risk evaluation apparatus according to claim 7 or 8. The evaluation unit is
Prior to acquisition of the order information, the contraindications, the order information, and the risk that are attached to the subject in advance are associated with each other at the timing when the X-ray image of the subject is acquired and stored in the image server When the order information is acquired by the order information acquisition unit, the risk evaluation information is used to evaluate the risk of imaging the subject according to the order information.
The risk evaluation apparatus according to any one of claims 7 to 9. The output unit is
Generating a risk assessment image showing a risk assessment result of the contraindications attached to the subject and displaying it on a display;
The risk evaluation apparatus according to any one of claims 1 to 10. A plurality of the contraindications are attached to the subject,
The evaluation unit is
For each of the contraindications attached to the subject, assess the risk of imaging the subject according to the order information;
The output unit is
Generating the risk assessment image by mapping the risk assessment result of each contraindication to a position on the human body model corresponding to the anatomical location to which each contraindication is attached;
The risk evaluation apparatus according to claim 11. Information indicating that the contraindications included in the risk assessment image have already been removed, or information indicating that the contraindications included in the risk assessment image can be ignored in imaging according to the order information. , An additional information receiving unit that receives from the user via the input unit,
The risk evaluation apparatus according to claim 11 or 12, further comprising: The contraindication information acquisition unit,
Furthermore, when the information on the contraindications is stored in association with the subject in the contraindication storage unit provided in another risk evaluation device, the contraindication information attached to the subject is stored on the subject. Acquired from the contraindication storage unit provided in the other risk assessment device as information of the object,
The risk evaluation apparatus according to claim 2. Obtaining order information for requesting imaging of the subject;
Obtaining information on contraindications attached to the subject;
Assessing the risk of imaging the subject according to the order information based on information on the contraindications attached to the subject;
Outputting information based on the result of the evaluation;
Risk assessment method with

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