Medical image diagnostic apparatus and method for operating medical image diagnostic apparatus

Abstract

To provide a medical image diagnostic apparatus that can properly instruct a subject to act a motion required for examination, and to provide a method for operating a medical image diagnostic apparatus.SOLUTION: A medical image diagnostic apparatus for imaging a tomographic image of a subject includes: a first display from which a subject in examination can be viewed; and a processor. The processor acquires first information including information of an examination to be performed and displays second information including information of the motion that the subject acts on the first display on the basis of the first information.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a medical image diagnostic apparatus and an operating method thereof, and more particularly to a medical image diagnostic apparatus that captures a tomographic image of a subject within a bore, and an operating method thereof. [Background technology]

[0002] There are known medical imaging diagnostic devices, such as magnetic resonance imaging (MRI) devices and computed tomography (CT) devices, that capture cross-sectional images of a subject in a bore. Some examinations using these medical imaging diagnostic devices require the subject to perform specific movements. For example, an MRI examination of an elbow requires the elbow to be bent at various angles. Conventionally, in this type of examination, an operator verbally instructs the subject on the movements required of the subject.

[0003] Patent Document 1 describes a technique in which a display unit that is visible to a subject undergoing an examination is provided, and text input by an operator is displayed on the display unit as a guide display. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2016-30125 A Summary of the Invention [Problem to be solved by the invention]

[0005] The actions required of the subject vary depending on the test, and it is difficult to give appropriate instructions. In addition, there is also the problem that inappropriate instructions can confuse the subject.

[0006] The present invention has been made in consideration of the above circumstances, and has an object to provide a medical image diagnostic apparatus and an operating method for a medical image diagnostic apparatus that can appropriately instruct a subject to perform actions required for an examination. [Means for solving the problem]

[0007] (1) A medical imaging diagnostic device for photographing a subject inside a bore, comprising: a first display unit that can be viewed by the subject during examination; and a processor, wherein the processor acquires first information including information on an area of ​​the subject to be examined, and displays second information on the first display unit based on the first information, the second information including information for causing the subject to operate the area to be examined.

[0008] (2) The medical imaging diagnostic apparatus according to (1), wherein the information for causing the subject to move the part to be examined is information for physically moving a specific part of the body.

[0009] (3) The medical image diagnostic apparatus according to (1) or (2), wherein the first information further includes information on a purpose of the examination and information on an action to be performed by the subject.

[0010] (4) The medical image diagnostic apparatus according to any one of (1) to (3), wherein the second information includes information on a part of the body to be moved and information on a manner of moving the part.

[0011] (5) A medical image diagnostic apparatus according to (4), wherein the information on the manner of movement includes information on the start position of the part to be moved and information on the end position of the part to be moved.

[0012] (6) The medical image diagnostic apparatus according to (4), wherein when a specific part of the body is moved in stages, the information on how to move the part includes information on the position at which the part is to stop.

[0013] (7) A medical imaging diagnostic apparatus according to any one of (1) to (6), wherein the second information includes information showing, in an illustration or animation, the part of the body to be moved and the manner of movement.

[0014] (8) A medical imaging diagnostic apparatus according to any one of (1) to (7), further comprising a first detection unit that detects the movement of a subject within the bore, and the processor determines whether or not a requested movement has been performed based on a detection result of the first detection unit, and notifies the subject of the determination result.

[0015] (9) A medical image diagnostic apparatus according to (8), wherein the processor causes the first display unit to display information on the subject's movement in the bore together with the second information based on the detection result of the first detection unit.

[0016] (10) A medical imaging diagnostic apparatus according to any one of (1) to (9), further comprising a first detection unit that detects the movement of a subject within the bore, wherein the processor generates guide information for the subject to perform a requested movement based on a detection result of the first detection unit, and notifies the subject of the guide information.

[0017] (11) A medical image diagnostic apparatus according to (10), wherein the processor causes the first display unit to display information on the subject's movement in the bore together with the second information based on the detection result of the first detection unit.

[0018] (12) A medical imaging diagnostic apparatus according to any one of (1) to (11), further comprising a first detection unit that detects the movement of the subject in the bore and a second display unit that is visible to an operator, wherein the processor causes the second display unit to display information about the movement of the subject in the bore based on the detection result of the first detection unit.

[0019] (13) The medical image diagnostic apparatus according to (12), wherein the processor determines whether or not a requested action has been performed based on a detection result of the first detection unit, and notifies an operator of the determination result.

[0020] (14) A medical imaging diagnostic apparatus according to (12) or (13), wherein the processor generates guide information for the subject to perform a requested action based on a detection result of the first detection unit, and notifies the operator of the guide information.

[0021] (15) A medical imaging diagnostic apparatus according to any one of (1) to (14), further comprising a second detection unit that detects a specific movement by a subject, wherein the processor notifies an operator when the specific movement is detected by the second detection unit.

[0022] (16) A method for operating a medical imaging diagnostic device that images a subject inside a bore, comprising the steps of: acquiring first information including information on an area of ​​the subject to be examined; and displaying, on a first display unit viewable by the subject during the examination, second information including information for causing the subject to operate the area to be examined based on the first information. Effect of the Invention

[0023] According to the present invention, it is possible to properly instruct a subject on the actions required for a test. [Brief description of the drawings]

[0024] [Figure 1] The schematic configuration of the MRI device is shown below. [Diagram 2] FIG. 1 is a block diagram showing an example of a hardware configuration of an operation console. [Diagram 3] Block diagram of the main functions of the operation console [Figure 4] Block diagram of main functions of the first display control unit [Diagram 5] FIG. 13 is a diagram showing an example of an input screen for examination information. [Figure 6] A diagram showing an example of the procedure for setting options [Figure 7] Conceptual diagram of information recorded in the display information database [Figure 8] FIG. 13 is a diagram showing an example of display information. [Figure 9] FIG. 11 is a diagram showing another example of display information. [Figure 10] FIG. 11 is a diagram showing another example of display information. [Figure 11] Flowchart showing the procedure for examination using an MRI device [Figure 12] Functional block diagram of MRI system [Figure 13]Block diagram of main functions of a motion detection unit, a determination unit, and a first display control unit [Figure 14] FIG. 13 is a diagram showing an example of feature point extraction. [Figure 15] FIG. 13 is a diagram showing an example of a display of a determination result. [Figure 16] FIG. 13 is a diagram showing an example of a display of a motion state of a subject. [Figure 17] FIG. 11 is a diagram showing another example of a display of the motion state of a subject. [Figure 18] FIG. 11 is a diagram showing another example of a display of the motion state of a subject. [Figure 19] Block diagram of the functions of the operation console regarding the guide function [Figure 20] Block diagram of the main functions of the operation console [Figure 21] Block diagram of the main functions of the operation console [Figure 22] A diagram showing an example of a specific action and the content of the intention to be conveyed DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

[0026] [First embodiment] Here, the present invention will be described by taking as an example a case where it is applied to an MRI apparatus.

[0027] [MRI device] FIG. 1 is a diagram showing a schematic configuration of an MRI apparatus.

[0028] The MRI apparatus 1 shown in Fig. 1 includes a gantry 10, a bed 20, and an operation console 30. The gantry 10 and the bed 20 are installed in an imaging room 2, and the operation console 30 is installed in an operation room 3. The imaging room 2 and the operation room 3 are separated by a partition 4. The partition 4 is provided with a glass window 5. The situation inside the imaging room 2 can be observed from the operation room 3 through the glass window 5.

[0029] The gantry 10 has a bore 11 that forms an examination space (imaging space). As an example, in this embodiment, the gantry 10 has a cylindrical bore 11 (has a so-called tunnel-type structure). The gantry 10 may also have a so-called open-type structure. The subject S is inserted into the bore 11 and examined (imaging).

[0030] The gantry 10 has a static magnetic field magnet and a gradient magnetic field coil (not shown) in a housing. The static magnetic field magnet generates a static magnetic field in the bore 11. The static magnetic field magnet is composed of, for example, a permanent magnet, a superconducting magnet, a normal conducting magnet, etc. The gradient magnetic field coil is driven by a driving unit (not shown) to generate a gradient magnetic field.

[0031] The gantry 10 further includes a receiving coil 12. The receiving coil 12 receives magnetic resonance signals generated from a subject S. The receiving coil 12 is disposed at a part of the subject S to be examined. FIG. 1 shows an example in which the part to be examined is an elbow. The magnetic resonance signals received by the receiving coil 12 are reconstructed into an image and transmitted to an operation console 30.

[0032] The bed 20 has a top plate 21 on which the subject S is placed. The top plate 21 is driven by a drive unit (not shown) to move horizontally and is inserted into the bore 11. In general, the subject S is placed on the top plate 21 in a supine position and inserted into the bore 11.

[0033] The top board 21 is provided with a screen 23 and a reflector 24. An image is projected onto the screen 23 from a projection device 22 installed in the imaging room 2. The projection device 22 projects an image onto the screen 23 from the rear side (so-called rear projection). The projection device 22 may be disposed outside the imaging room 2 and project an image onto the screen 23 using optical fibers or the like. The reflector 24 is disposed above the head of the subject S who is placed on the top board 21 in a supine position. The subject S observes the image (projected image) projected onto the screen 23 through the reflector 24. Therefore, the image projected onto the screen 23 is formed of a mirror image with the left and right reversed. The display unit formed of the projection device 22, the screen 23, and the reflector 24 is an example of a first display unit that can be viewed by the subject S during the examination.

[0034] FIG. 2 is a block diagram showing an example of a hardware configuration of the operation console.

[0035] The operation console 30 receives operation instructions from an operator Op, and operates the MRI apparatus 1 according to the received instructions.

[0036] The operation console 30 has a configuration as a general computer, that is, it has a processor 31, a main storage device 32, an auxiliary storage device 33, an input device 34, a display device 35, an interface unit 36, and the like.

[0037] For example, a CPU (Central Processing Unit) that is a general-purpose processor that executes programs and functions as various processing units is adopted as the processor 31. Various programs and data executed by the processor 31 are stored in the main storage device 32 and / or the auxiliary storage device 33. Note that the program is synonymous with software.

[0038] The main memory device 32 includes a random access memory (RAM) and a read only memory (ROM).

[0039] The auxiliary storage device 33 is composed of, for example, a hard disk drive (HDD) or a solid state drive (SSD).

[0040] The input device 34 includes, for example, a keyboard, a mouse, a touch panel, an operation panel, and the like.

[0041] The display device 35 is configured, for example, with a liquid crystal display (LCD), an organic electroluminescence diode display (OLED display), etc. The display device 35 is used for operating the MRI apparatus 1, as well as for displaying various information, viewing images, etc.

[0042] The interface unit 36 ​​includes interfaces for connecting the gantry 10, the bed 20, and other peripheral devices, as well as a network interface for connecting the operation console 30 to a network.

[0043] FIG. 3 is a block diagram showing the main functions of the operation console.

[0044] The operation console 30 mainly has functions of an imaging control unit 31A, an image acquisition unit 31B, a first display control unit 31C, a second display control unit 31D, a recording control unit 31E, etc. The functions of each unit are realized by the processor 31 executing a predetermined program.

[0045] The imaging control unit 31A controls the gantry 10 and the bed 20 to control imaging by the MRI apparatus 1.

[0046] The image acquiring unit 31B acquires the captured image from the gantry 10. The acquired image is an image reconstructed from a magnetic resonance signal, and is a tomographic image of the subject S.

[0047] The reconstruction process may be performed by the operation console 30. In this case, the operation console 30 acquires magnetic resonance signals from the gantry 10. The operation console 30 performs predetermined signal processing on the acquired magnetic resonance signals to reconstruct an image.

[0048] The first display control unit 31C controls the display on the screen 23 by the projection device 22. As described above, the display on the screen 23 is observed by the subject S during the examination. In this embodiment, when the subject S is made to perform a specific movement, information on the movement required of the subject S is displayed on the screen 23. The first display control unit 31C controls the display. Details of the control will be described later.

[0049] The second display control unit 31D controls the display on the display device 35. The image obtained by shooting (the image generated by the image acquisition unit 31B) is displayed on the display device 35 under the control of the second display control unit 31D.

[0050] The recording control unit 31E controls the recording of data in the auxiliary storage device 33. Images obtained by shooting are recorded in the auxiliary storage device 33 automatically under the control of the recording control unit 31E or in response to a recording instruction from the operator Op.

[0051] [Screen display control] As described above, the display on the screen 23 by the projection device 22 is controlled by the first display control unit 31C. When an examination is performed in which the subject S is made to perform a specific movement, the first display control unit 31C causes the screen 23 to display information on the movement required of the subject S.

[0052] The actions required of the subject S vary depending on the examination. The first display control unit 31C acquires information on the examination to be performed, and controls the display on the screen 23 based on the acquired information so that information corresponding to the examination to be performed (information on the actions required of the subject S in the examination) is displayed.

[0053] FIG. 4 is a block diagram of main functions of the first display control unit.

[0054] As shown in FIG. 4, the first display control unit 31C mainly has functions of an examination information acquiring unit 31C1, a display information acquiring unit 31C2, and a display control unit 31C3.

[0055] The examination information acquiring unit 31C1 acquires information on the examination to be performed (examination information). In this embodiment, the operator Op inputs the examination information via the input device 34. Therefore, the examination information acquiring unit 31C1 acquires the information input from the input device 34 as the examination information. The examination information is input, for example, by displaying a predetermined input screen on the display device 35.

[0056] The "examination information" includes at least "information on the part to be examined." In this embodiment, information including "information on the part to be examined," "information on the purpose of the examination," and "information on the action to be performed by the subject" is acquired as the "examination information." In this embodiment, the examination information is an example of first information.

[0057] Here, "information on the part to be examined" refers to information on the part of the body to be examined (imaging), such as the head, neck, elbows, shoulders, hip joints, knees, etc.

[0058] "Information on the purpose of the examination" refers to information about the purpose of the examination. This includes functional Magnetic Resonance Imaging (fMRI) examinations for brain function analysis, optic nerve examinations, and kinematic Magnetic Resonance Imaging (Kinematic MRI) examinations for orthopedic movable area imaging.

[0059] Also, "information on the movements to be made by the subject" refers to information on the movements to be made by the subject during each examination. For example, in a kinematic MRI examination of an elbow, the elbow is bent in a predetermined direction and angle, and then imaging is performed. Also, for example, in an optic nerve examination, imaging is performed by moving the viewpoint in a predetermined direction. In this way, information on the movements determined for each examination is included in the examination information as information on the movements to be made by the subject. The content of the movements is specified as necessary. For example, for movements to bend elbows, knees, etc. (movements such as flexion, bending and stretching), the bending direction, angle, etc. are specified. Also, for movements to move the viewpoint, the movement direction, amount of movement, etc. are specified.

[0060] Fig. 5 is a diagram showing an example of an input screen for test information. Fig. 5 shows an example of inputting "information on the part to be examined", "information on the purpose of the examination", and "information on the action to be performed by the subject" as the test information.

[0061] As shown in Figure 5, the screen has an input field for "area to be examined" (an input field for information on the area to be examined), an input field for "purpose of examination" (an input field for information on the purpose of examination), and an input field for "action" (an input field for information on the action to be performed by the subject), and information corresponding to the examination to be performed is entered into each input field.

[0062] Input to each input field may be performed by the operator Op entering text, or by displaying predetermined options and selecting one from the displayed options to input information. Fig. 5 shows an example in which predetermined options are displayed in a pull-down menu, and the required information is input by selecting one from the displayed options.

[0063] When displaying options and inputting necessary information, it is preferable to input information for each item in a predetermined order, and to switch the displayed options for the next item depending on the result of the previous selection. For example, the information is input in the order of "site to be examined," "purpose of examination," and "action to be performed by the subject," and the displayed options for the items "purpose of examination" and "action to be performed by the subject" are switched depending on the result of the previous selection.

[0064] Fig. 6 is a diagram showing an example of a procedure for setting options. Fig. 6 shows an example of inputting "information on the part to be examined", "information on the purpose of the examination", and "information on the action to be performed by the subject" in the order of "information on the part to be examined", "information on the purpose of the examination", and "information on the action to be performed by the subject" as the examination information.

[0065] First, a "part to be examined" is selected. In the example shown in FIG. 6, "head", "neck", "upper limbs", and "lower limbs" are displayed as options for the part to be examined. For "upper limbs" and "lower limbs", more detailed parts are displayed. Specifically, for "upper limbs", "elbow", "shoulder", and "other" are displayed as options for the detailed part. For "lower limbs", "hip joint", "knee", and "other" are displayed as options for the detailed part.

[0066] For "Purpose of examination", the options to be displayed are determined according to the selection result of "Area to be examined". For example, in the example shown in FIG. 6, when "Head" is selected as "Area to be examined", "fMRI" (functional MRI examination), "Optic nerve" (optic nerve examination), and "MRA" (Magnetic Resonance Angiography (MRA) examination) are displayed as options for the purpose of examination. Note that in the example shown in FIG. 6, when a region other than "Head" is selected as the area to be examined, the purpose of examination is automatically set to "Kinematic MRI" (kinematic MRI examination).

[0067] As for "motion," options to be displayed are determined according to the selection result of "examination purpose." For example, in the example shown in FIG. 6, when "head" is selected as the part to be examined and "fMRI" is selected as the examination purpose, "tap," "rest," and "other" are displayed as motion options. Note that in the example shown in FIG. 6, except when "head" is selected as the part to be examined and "fMRI" is selected as the examination purpose, motions are automatically determined according to the selection result of the part to be searched and the examination purpose. For example, when "neck" is selected as the part to be examined and the examination purpose is "Kinematic MRI," the motion is automatically set to "nod."

[0068] Regarding "movements," even if they are of the same type, if the content is different, they will be treated as different movements. For example, even if the movement is the same "bending," if the bending direction or angle is different, it will be treated as a different movement (a different bending movement).

[0069] The display information acquiring unit 31C2 acquires, from a display information database (DB) 37, display information (information to be displayed on the screen 23) corresponding to the examination to be performed, based on the examination information acquired by the examination information acquiring unit 31C1.

[0070] FIG. 7 is a conceptual diagram of information recorded in the display information database.

[0071] 7, the examination information and the display information are associated with each other and recorded in the display information database 37. The display information database 37 is stored in the auxiliary storage device 33, for example.

[0072] In this embodiment, the display information is composed of image and / or text data to be displayed on the screen 23. Images include both still images and moving images. The display information will be described in detail later.

[0073] Based on the examination information acquired by the examination information acquisition unit 31C1, the display information acquisition unit 31C2 acquires corresponding display information from the display information database 37. For example, when the examination information acquired is that the examination target part is "elbow", the examination purpose is "Kinematic MRI", and the movement is "flexion", the information of "DATE_0007" is acquired as display information from the display information database 37. In this way, the display information corresponding to the examination is acquired.

[0074] The display control unit 31C3 controls the projection device 22 to display the display information acquired by the display information acquisition unit 31C2 on the screen 23. As described above, in this embodiment, the subject S observes the display on the screen 23 through the reflector 24, and therefore the image displayed on the screen 23 is a mirror image with the left and right reversed.

[0075] In this manner, in this embodiment, information on the examination to be performed (examination information) is obtained, and display information corresponding to the obtained information is obtained from the display information database 37 and displayed on the screen 23.

[0076] [Display information] The information (display information) displayed on the screen 23 as information corresponding to the examination to be performed is information for causing the subject S to move the part to be examined. When the part to be examined is moved by physically moving a specific part of the body, the display information includes information on the movement of physically moving the specific part of the body. In this case, the display information includes information on the part of the body to be moved and information on how to move it. For example, in the case of a kinematic MRI examination of the elbow, the movement to be performed by the subject S is bending the elbow. Therefore, in this case, information instructing bending of the elbow (information that the part to be moved is "elbow" and the movement method is "flexion") is displayed on the screen 23 as display information. In this embodiment, the display information is an example of second information.

[0077] Fig. 8 is a diagram showing an example of display information. Fig. 8 shows the display on the screen 23 observed through the reflector 24. Therefore, the image actually displayed (projected) on the screen 23 is an image that is reversed horizontally.

[0078] Fig. 8 shows an example of display information when performing a kinematic MRI examination of the elbow. In particular, Fig. 8 shows an example in which the movement performed by the subject S is to bend the elbow 30 degrees straight up from a horizontally extended position.

[0079] FIG. 8 shows an example in which the actions required of the subject S are displayed using text and illustrations.

[0080] The text displayed instructs the user to bend their elbow 30 degrees upward from a horizontally extended position. For example, the text (message) displayed is "Bend your elbow 30 degrees upward from a horizontally extended position."

[0081] The illustration shows the movement of bending the elbow 30 degrees from a horizontally extended position to a vertically upward position. Instead of the illustration, the movement of bending the elbow 30 degrees from a horizontally extended position to a vertically upward position may be displayed using animation.

[0082] It is preferable to clearly indicate the start and end positions of the movement, as shown in Figure 8. In the example shown in Figure 8, the start position is when the elbow is extended horizontally, and the end position is when the elbow is bent 30 degrees straight up.

[0083] Here, the elbow information in Fig. 8 is an example of information on a body part to be moved, and the text and illustrations displayed in Fig. 8 are an example of information on how to move.

[0084] In this way, when the motion required of the subject S is a motion that involves moving a part of the body, it is preferable to show the motion required of the subject S with an illustration or animation. This allows the subject S to easily understand the motion he or she should perform.

[0085] When the part to be examined is moved stepwise and photographed multiple times, the display information is switched for each photograph. The display may be switched automatically, or may be switched according to an instruction from an operator Op. When the display is switched automatically, for example, the display information may be switched sequentially with photography as a trigger.

[0086] FIG. 9 is a diagram showing another example of the display information.

[0087] Fig. 9 shows an example of display information when imaging multiple times with the elbow bent in stages in a kinematic MRI examination of the elbow. Fig. 9 shows an example of imaging when the elbow is bent upward by 30 degrees each time from a horizontally extended state. More specifically, it shows an example of imaging when the elbow is extended horizontally (0 degrees), bent by 30 degrees, bent by 60 degrees, and bent by 90 degrees.

[0088] In this way, when taking images of a body part by moving it step by step, it is preferable to include information on each stopping position in the display information, so that the subject S can easily understand the sequence of movements he or she should make.

[0089] In addition, in an examination in which a part of the body is moved stepwise to take an image, an auxiliary tool may be used. For example, in an examination in which an image is taken multiple times while bending an elbow stepwise as in the above example, an auxiliary tool that allows the elbow to bend at regular angle intervals may be used to take the image. In this case, information instructing the user to bend the elbow to the next angle may be displayed as the display information.

[0090] FIG. 10 is a diagram showing another example of the display information.

[0091] FIG. 10 shows an example of display information when an optic nerve test is performed. In particular, FIG. 10 shows an example in which the action performed by the subject S is to move the viewpoint. In this case, as shown in FIG. 10, a target Ta is displayed on the screen 23. The target Ta is an image that the subject S gazes at during the test. FIG. 10 shows an example in which the target Ta is configured using an image that resembles an eye. In the test, for example, the target Ta is moved along a preset path. Note that the target Ta may be moved by an operator Op. In this case, the operator Op moves the target Ta using the display device 35 and the input device 34. The subject S performs the action of tracking the target Ta with one or both eyes.

[0092] In this manner, on the screen 23, information on the actions required of the subject S in each examination is displayed as display information.

[0093] In addition to the above, for example, in a functional MRI examination of the head, when the subject S is to perform a tapping motion, an illustration or animation of the index finger tapping is displayed. Similarly, in a functional MRI examination of the head, when the subject S is to perform a motion of clenching and opening the hand, an illustration or animation of the motion of clenching and opening the hand is displayed. Note that, as in this example, depending on the purpose of the examination, the subject S may be required to move a part of the body other than the part to be examined. In other words, the information for making the subject S move the part to be examined includes information on the motion of physically moving a part of the body other than the part to be examined.

[0094] Also, for example, in a functional MRI examination of the head, when subject S is to perform a calculation operation, a calculation problem is displayed on the screen 23. For example, problems such as "100-7=?", "93-7=?", ..., which require the subject S to subtract 7 from 100 in sequence, are displayed. In this way, the operation performed by subject S is not necessarily limited to physically moving a part of the subject S's body. Like the calculation operation in this example, it also includes operations performed in the brain. In other words, the information for making subject S move the part to be examined includes information on the operation to be performed in the brain.

[0095] [MRI device operation (method of operation)] FIG. 11 is a flow chart showing the procedure of an examination using an MRI apparatus.

[0096] First, examination information is acquired (step S1). As described above, in this embodiment, the operator Op inputs necessary information from the input device 34, and the examination information is acquired.

[0097] In parallel with the acquisition of examination information, information required for a general MRI examination (eg, subject information, etc.) is acquired.

[0098] After obtaining the examination information and the like, the subject S is set in the MRI apparatus 1. That is, the subject S is placed on the top board 21. After the setting is completed, the examination is started (step S2).

[0099] When the examination is started, first, general clinical images such as positioning images and pre-measurement images are captured (step S3).

[0100] When capturing general clinical images is completed, capturing images according to the contents of the examination is started (step S3). At this stage, information on the action required of the subject S (information for causing the subject S to move the part to be examined) is displayed on the screen 23 (step S4). The first display control unit 31C acquires display information corresponding to the acquired examination information from the display information database 37, and controls the projection device 22 to display information on the action required of the subject S on the screen 23. The subject S checks the display on the screen 23 and performs the requested action.

[0101] The operator Op checks the movement of the subject S and instructs imaging. That is, when the subject S performs the required movement, the operator Op instructs imaging. The imaging control unit 31A determines whether or not there is an imaging instruction from the operator Op (step S5). Then, imaging is performed according to the imaging instruction (step S6).

[0102] After the imaging, it is determined whether or not all the imaging required for the examination has been completed (step S7). If it is determined that all the imaging required has been completed, the examination ends.

[0103] In this way, according to the MRI apparatus 1 of the present embodiment, when an examination is performed in which the subject S is made to perform a specific movement, information on the movement to be requested is displayed on the screen 23. This allows the subject S to be appropriately instructed on the movement required of the subject in the examination.

[0104] [Variations] (1) 1st display section In the above embodiment, the projection device 22 projects information on the movement to be performed by the subject S onto the screen 23, and the subject S observes the information projected onto the screen 23 via the reflector 24. The method of presenting the information on the movement to be performed by the subject S to the subject S is not limited to this. In addition, for example, the projection device 22 may project information on the movement to be performed by the subject S onto the inner wall surface of the bore 11, the wall surface of the radiography room 2, etc. In this case, the subject S directly observes the image projected onto the inner wall surface of the bore 11, the wall surface of the radiography room 2, etc. In addition, the projection device 22 may directly project information on the movement to be performed by the subject S onto the position of the reflector 24, rather than onto the screen 23.

[0105] Furthermore, in the above embodiment, the projection device 22 is used, but a display device such as a liquid crystal display or an organic EL display may be used to present information on the actions to be performed by the subject S to the subject S. In this case, the display device is disposed at a position where the subject S can see the display device during the examination. For example, a display device capable of adjusting the position may be provided on the gantry 10, allowing the subject S to see various information during the examination.

[0106] In addition to or instead of displaying information on the actions to be performed by the subject S on the screen 23 or the like, the information may be output as audio.

[0107] (2) Inspection details In the above embodiment, the examinations performed using the MRI apparatus 1 are described as functional MRI examination, optic nerve examination, kinematic MRI examination, etc., but the application of the present invention is not limited to this. The present invention can be widely applied to examinations in which the subject S performs a specific movement.

[0108] [Second embodiment] In a test in which a subject performs a specific movement, it is preferable that the subject can confirm whether the movement he or she performed is appropriate. In other words, it is preferable that the subject can confirm whether the movement he or she performed is as required. In this embodiment, an MRI device that can confirm whether the movement he or she performed is appropriate will be described.

[0109] [Device configuration] FIG. 12 is a functional block diagram of the MRI apparatus.

[0110] As shown in FIG. 12, the MRI apparatus 1 of this embodiment has a camera 14. The camera 14 is a so-called digital camera, and electronically captures the subject S (subject in the bore) during the examination (see FIG. 13). The installation position of the camera 14 is not particularly limited. The camera 14 may be installed in a position where the movement of the subject S in the bore can be confirmed from the captured image. Therefore, the camera 14 does not necessarily have to be provided on the gantry 10, and may be provided on the bed 20 or the like. Furthermore, a plurality of cameras 14 may be installed. By installing a plurality of cameras 14, it becomes possible to detect the movement of the subject S from various directions.

[0111] In the MRI apparatus 1 of this embodiment, the operation console 30 further includes functions of a motion detection unit 31F and a determination unit 31G. The functions of the motion detection unit 31F and the determination unit 31G are realized by the processor 31 executing a predetermined program.

[0112] FIG. 13 is a block diagram of main functions of the motion detection unit, the determination unit, and the first display control unit.

[0113] The motion detection unit 31F acquires an image captured by the camera 14, and detects the motion of the subject S based on the acquired image. A known technique can be adopted for the process of detecting motion from an image. For example, a technique can be adopted in which feature points of a human body are extracted by image analysis, and the motion of the subject S is detected from the motion of the extracted feature points.

[0114] The feature points are extracted based on, for example, a skeletal model of the human body. Specifically, joints are extracted as feature points. For example, if the subject to be examined (photographed) is the upper limbs, the head, neck, right shoulder, left shoulder, right elbow, left elbow, right wrist, left wrist, etc. are extracted as feature points. If the subject to be examined is the lower limbs, the right hip joint, left hip joint, right knee, left knee, right ankle, left ankle, etc. are extracted as feature points. If the subject to be examined is the head or neck, the eyes, nose, ears, mouth, etc. can be extracted as further feature points.

[0115] FIG. 14 is a diagram showing an example of feature point extraction. FIG. 14 shows an example of a case where the object to be inspected is a right elbow. Image Im1 on the left side of the figure shows an example of an image captured with the elbow extended horizontally. Image Im2 on the right side shows an example of an image captured with the elbow bent about 60 degrees from the horizontally extended state straight up. As shown in FIG. 14, the right shoulder, right elbow, and right wrist are extracted as feature points from image Im1 and image Im2. In FIG. 14, symbol RS indicates the feature point of the right shoulder. Symbol RE indicates the feature point of the right elbow. Symbol RW indicates the feature point of the right wrist.

[0116] As shown in images Im1 and Im2, the movement of the elbow of subject S can be detected from the movements of each of the feature points RS, RE, and RW.

[0117] The process of extracting feature points from an image can use, for example, a trained model that has been machine-learned to extract feature points from an image.

[0118] In the present embodiment, camera 14 and movement detection section 31F that detects the movement of subject S from an image captured by camera 14 are an example of a first detection section.

[0119] The judgment unit 31G judges whether or not the subject S has performed the requested movement based on the detection result of the movement detection unit 31F. The judgment unit 31G acquires information on the movement to be performed by the subject S from the display information acquisition unit 31C2. The display information acquisition unit 31C2 acquires information on the movement to be performed by the subject S from the display information database 37 together with the display information. Thus, the display information database 37 records information on the movement to be performed by the subject S in association with the display information. The recorded information includes, for example, information on the part of the body to be moved and information on the way of moving. Furthermore, the information on the way of moving includes information on the start position of the movement and the end position of the movement. When moving a specific part of the body in stages, the information on the way of moving further includes information on the position where the part is to be stopped. For example, in the case of a kinematic MRI examination of an elbow, when the elbow is bent stepwise and photographed at each position, information on the movement (flexion) performed by the subject S is recorded, such as (1) information on the direction in which the elbow is bent, (2) information on the starting position (position at which the movement begins), (3) information on the step (interval of the bending angle), and (4) information on the end position (position at which the movement ends). In addition, for example, in the case of a functional MRI examination of the head, when the subject S is made to perform a tapping motion, information on (1) duration (time for which the tapping motion is continued), and (2) information on the interval (time interval for performing the tapping motion) are recorded. In addition, for example, in the case of a kinematic MRI examination of the neck, when the subject S is made to perform a nodding motion, information on (1) starting position (position at which the movement begins), (2) information on the step (interval of the bending angle), and (3) information on the end position (position at which the movement ends) are recorded.

[0120] The judgment unit 31G refers to the information acquired from the display information acquisition unit 31C2 and judges whether or not the subject S has performed the requested movement based on the detection result of the movement detection unit 31F. It is preferable to set an allowable range for the judgment. For example, when the subject S is to bend his / her elbow to a predetermined angle, an allowable range is set within a predetermined angle range before and after the target angle. If the elbow is bent within the allowable range, it is judged that the requested movement has been performed. The allowable range is set appropriately depending on the part of the body to be examined, the purpose of the examination, the movement content, etc. Also, the allowable range may be configured to be set arbitrarily by the operator Op.

[0121] The display control unit 31C3 notifies the subject S of the determination result by the determination unit 31G by displaying it on the screen 23.

[0122] FIG. 15 is a diagram showing an example of a display of the determination result.

[0123] As shown in Fig. 15, the judgment result is displayed superimposed on the display information. Fig. 15(A) is a diagram showing an example of the display when the requested action has been performed. In this case, the word "OK" is displayed as the judgment result. On the other hand, Fig. 15(B) is a diagram showing an example of the display when the requested action has not been performed. In this case, the word "NG" is displayed as the judgment result.

[0124] The display control unit 31C3 controls the projection device 22 so that the determination result is displayed superimposed on the display information.

[0125] [Effect] Here, the process from detection of the movement of the subject S to output of the determination result will be described.

[0126] When the examination starts, the subject S during the examination is photographed by the camera 14. The photographing is performed at a predetermined frame rate. The time-series images photographed by the camera 14 are added to the motion detection unit 31F.

[0127] The motion detector 31F extracts feature points from the acquired image and detects the motion of the subject. The detection result is sent to the determination unit 31G.

[0128] The determination unit 31G acquires information on the movement to be performed by the subject S via the display information acquisition unit 31C2. The determination unit 31G refers to the acquired information and judges whether or not the requested movement has been performed by the subject S based on the detection result of the movement detection unit 31F. The judgment result is added to the display control unit 31C3.

[0129] The display control unit 31C3 superimposes the determination result on the display information and displays it on the screen 23 (see FIG. 14).

[0130] In this manner, the MRI apparatus 1 of the present embodiment detects the movement of the subject S and judges whether the movement is performed as requested. Then, the judgment result is notified to the subject S. This allows the subject to be appropriately instructed on the movement required for the examination.

[0131] [Variations] (1) Display of the subject's motion status Information on the motion status of the subject S detected by the motion detection unit 31F may be displayed together with the display information. This allows the subject S to easily understand his / her own status and more easily carry out the requested motion.

[0132] Fig. 16 is a diagram showing an example of a display of a subject's motion state, in which (A) shows an example of a display before a required motion is performed, and (B) shows an example of a display after the required motion is performed.

[0133] In Fig. 16, the current motion state of the subject S is represented using dots D1, D2 and lines L1, L2 based on a human body skeletal model. Each dot D1, D2 corresponds to a feature point detected by the motion detection unit 31F. In the example shown in Fig. 16, the dot D1 corresponds to a feature point detected as the right elbow. Furthermore, the dot D2 corresponds to a feature point detected as the right wrist. Furthermore, the line L1 as a link represents the right upper arm, and the line L2 represents the right forearm.

[0134] 16(A), black dots D1, D2 and solid lines L1, L2 indicate the current motion state of the subject S. Moreover, a white dot D2x indicated by a dashed line indicates the target position of the right wrist.

[0135] When the subject S performs the requested action, the color of each dot D1, D2 changes as shown in Fig. 16(B). For example, they become white dots. At the same time, the word "OK" is displayed.

[0136] The display control unit 31C3 controls the display based on the detection result of the characteristic points by the action detection unit 31F, that is, displays each dot and line in correspondence with the position of each detected characteristic point.

[0137] In this way, by displaying information on the current movement state of the subject S together with the display information, the necessary movements can be instructed more appropriately to the subject S. Also, the subject can more easily understand the necessary movements. In particular, by displaying the target position together, the necessary movements can be more easily understood. This allows the examination to be carried out smoothly.

[0138] FIG. 17 is a diagram showing another example of the display of the motion state of the subject.

[0139] Fig. 17 shows an example of a kinematic MRI examination of an elbow in which the elbow is bent stepwise and photographed multiple times. In particular, Fig. 17 shows an example of photographing the elbow by bending it upwards by 30 degrees from a horizontally extended state. In this case, too, information showing the current movement state of the subject S is displayed in addition to information on the movement to be performed by the subject S. As in the above modification, in this example too, the movement state of the subject S is displayed by dots D1, D2 and lines L1, L2 based on a skeletal model of the human body.

[0140] FIG. 17 shows an example in which the next movement to be performed by the subject S is bending the elbow to 60 degrees. In this case, a dot D2x and a line L2x indicating the target position are displayed. In this way, when the subject S is to perform a movement that moves a part of the body in stages, the target positions are displayed in sequence. This allows the subject S to be guided appropriately.

[0141] Fig. 18 is a diagram showing another example of the display of the motion state of the subject. Fig. 18 shows an example of the case where an optic nerve is examined, and shows an example of the case where the subject S is made to move the viewpoint.

[0142] In this case, in addition to information about the action to be performed by the subject S, information indicating the current action status of the subject S is displayed. As described above, when the subject S is made to perform an action of moving the viewpoint, a target Ta for the subject S to gaze at is displayed as display information. In addition, information indicating the current position of the viewpoint of the subject S is displayed as information indicating the current action status of the subject S. In FIG. 18, the current position of the viewpoint of the subject S is displayed with a circular mark CP. By checking the position of the mark CP, the subject S can easily grasp the position to which the viewpoint should be moved (the position of the target Ta).

[0143] In this example, the camera captures an image of the eyes of the subject S. The movement detection unit 31F detects the position of the pupils from the image captured by the camera .

[0144] (2) Guide Based on the detection result of the movement, the subject S may be guided (including the presentation of improvements) to perform the requested movement. In this case, the operation console 30 is provided with a guide function.

[0145] FIG. 19 is a block diagram of functions related to the guide function that the operation console has.

[0146] 19, the operation console 30 has a function of a guide information generating unit 31H that generates guide information. This function is realized by the processor 31 executing a predetermined program.

[0147] The guide information generating unit 31H determines whether or not it is necessary to generate guide information based on the determination result of the determining unit 31G. That is, the guide information is generated when the determining unit 31G determines that the requested action has not been performed.

[0148] The guide information is information for the subject S to perform a requested action, and is generated based on the current state of the subject S. The guide information generating unit 31H generates necessary guide information based on the detection result of the action detecting unit 31F. That is, it generates information (information for improving the current state) for leading from the current state to a target state (position, posture, etc.) from the current state. For example, when the subject S is requested to bend his / her elbow 30 degrees upward from a horizontally extended state, if the detected action of the subject S is to bend his / her elbow 20 degrees upward from a horizontally extended state, information requesting further bending 10 degrees upward is generated as the guide information. Also, for example, when the subject S is requested to bend his / her elbow 30 degrees upward from a horizontally extended state, if the detected action of the subject S is to bend his / her elbow 30 degrees diagonally upward from a horizontally extended state, information requesting correction of the bending direction is generated as the guide information. In this way, information on the required action is generated as the guide information based on the current state. The expression format is not particularly limited. For example, the required actions can be expressed in text data. Alternatively, instead of or in addition to the text data, the required actions can be expressed in illustrations or animation.

[0149] The display control unit 31C3 causes the guide information generated by the guide information generating unit 31H to be displayed on the screen 23. As described above, the guide information is information for guiding the subject S from his / her current state to a target state. For example, in the above example, a message such as "Please bend your elbows upward by another 10 degrees" is displayed in text at a predetermined position on the screen 23.

[0150] In this way, by presenting a guide or points for improvement, the subject S can easily perform the required action. Also, the subject can easily perform the required action.

[0151] In this example, the guide information is configured to be displayed on the screen 23, but in addition to or instead of displaying it on the screen 23, the guide information may be output by voice.

[0152] (3) Notification of the results of the judgment In the above embodiment, the judgment result is displayed on the screen 23 and notified to the subject S, but the method of notifying the judgment result is not limited to this. In addition, for example, the judgment result may be notified using sound or voice. The same applies to the guide information, and the guide information may be notified to the subject S by voice.

[0153] (4) Judgment method Artificial intelligence (AI) can also be used to determine whether a requested action has been performed. For example, an image captured by the camera 14 can be added to the trained model to determine whether a requested action has been performed. The trained model is generated by machine learning using predetermined training data so that it can be determined from an image whether a predetermined action has been performed.

[0154] (5) Detection of subject's movements In the above embodiment, the subject S during the examination is photographed by the camera 14, and the movement of the subject S is detected from the obtained image, but the method of detecting the movement of the subject S during the examination is not limited to this. For example, the movement of the subject S may be detected by using the image photographed by the MRI apparatus 1.

[0155] (6) Acquisition of test information In the above embodiment, the information on the examination to be performed (examination information) is manually input by the operator Op via the input device 34, but the method of acquiring the examination information is not limited to this. Normally, in an MRI examination, information on the subject, information on the examination contents, etc. are acquired (input) prior to the examination. Therefore, the examination information may be acquired using this information. In addition, this information may be acquired from the outside (for example, an in-hospital system, etc.) via a network. Furthermore, it may be acquired from the imaging protocol.

[0156] [Third embodiment] In the second embodiment, the motion of the subject S is detected, and the device automatically judges whether the motion is performed as requested based on the detection result. In this embodiment, the detection result of the motion is presented to the operator Op, who judges whether the motion is appropriate.

[0157] FIG. 20 is a block diagram showing the main functions of the operation console.

[0158] As shown in FIG. 20, in the MRI apparatus of this embodiment, information on the movements of the subject S detected by the movement detection unit 31F is added to the second display control unit 31D. The second display control unit 31D displays the acquired information on the movements of the subject S on the display device 35. The display format is not particularly limited. For example, as in the above embodiment, the current movement state of the subject S can be displayed using dots representing feature points and lines connecting the dots (see FIG. 16). At this time, the target state (position, posture, etc.) may also be displayed. In this embodiment, the display device 35 is an example of a second display unit that can be viewed by the operator Op.

[0159] In this manner, in the MRI apparatus of this embodiment, the current motion state of the subject S is displayed on the display device 35. Therefore, the operator Op can grasp the current motion state of the subject S by checking the display device 35. Therefore, the operator Op can determine whether or not the requested motion has been performed from the display on the display device 35. The operator Op notifies the subject of the determination result as necessary. For example, if the requested motion has been performed, this is displayed on the screen 23 via the projection device 22 (for example, "OK" is displayed). Also, if the requested motion has not been performed, information necessary for the requested motion is notified. For example, information for guiding to the target position is notified.

[0160] [Variations] (2)Second display section In the above embodiment, the current motion state of the subject S is displayed on the display device 35 provided on the console 30, but the display destination of the current motion state of the subject S is not limited to this. It may be configured to be displayed on another display device outside the radiography room 2. Therefore, for example, it may be configured to be displayed on a mobile terminal equipped with a display (for example, a tablet computer, a smartphone, etc.).

[0161] (2) Present information to both the patient and the operator The detection results of the movement of the subject S may be configured to be presented to both the subject S and the operator Op.

[0162] Also, based on the detection result of the motion of the subject S, the device may automatically determine whether the motion has been performed as requested and notify the operator Op of the result. For example, the determination result may be displayed on the display device 35 to notify the operator Op.

[0163] Furthermore, based on the detection result of the movement of the subject S, guide information for the subject S to perform the requested movement may be generated and notified to the operator Op.

[0164] [Fourth embodiment] Typically, in an MRI examination, an emergency call button is handed to the subject S. If the subject S feels unwell or experiences some other inconvenience during the examination, the subject S presses the button to notify the operator Op, etc. However, in an examination that involves moving parts of the body, the button may get in the way of the examination. Therefore, in this embodiment, an MRI apparatus that allows the subject S to contact the operator Op, etc. during the examination without using an emergency call button will be described.

[0165] FIG. 21 is a block diagram showing the main functions of the operation console.

[0166] As shown in Fig. 21, the operation console 30 further has a function of a specific action detection unit 31J. The specific action detection unit 31J analyzes an image captured by the camera 14 and detects a specific action by the subject S. Here, the specific action includes the subject S taking a specific pose (posture) and making a specific sign. For each action, the content of the intention that the subject S conveys to the operator Op, etc. is determined.

[0167] FIG. 22 is a diagram showing an example of a specific action and the contents of the intention to be conveyed.

[0168] Fig. 22 shows an example of a case where an intention to interrupt an examination is conveyed. In the example shown in Fig. 22, the intention to interrupt an examination is assigned to a motion (pose) of crossing both arms.

[0169] In addition, it is possible to assign a negative (NO) intention to a shaking of the head from side to side, and an affirmative (YES) intention to a shaking of the head up and down (nodding)

[0170] The subject S is notified of the movements to be detected and the content of the expression of intent to be assigned to each movement before the test.

[0171] When the specific action detection unit 31J detects a specific action from an image captured by the camera 14, it outputs information on the detected action to the second display control unit 31D. For example, a trained model that has been machine-learned to detect a specific action from an image can be used to detect the specific action. In the present embodiment, the camera 14 and the specific action detection unit 31J that detects a specific action by the subject S from an image captured by the camera 14 are an example of a second detection unit.

[0172] The second display control unit 31D displays information corresponding to the action detected by the specific action detection unit 31J on the display device 35 and notifies the operator Op. For example, in the example shown in Fig. 22, when the specific action detection unit 31J detects an action indicating an intention to interrupt the examination (action of crossing both arms), the second display control unit 31D displays a message "interrupt examination" on the display device 35 and notifies the operator Op.

[0173] In this way, according to the MRI apparatus of this embodiment, when the subject S performs a predetermined specific action, information corresponding to the action is displayed on the display device 35. This allows the subject S during an examination to contact or communicate with the operator Op, etc., without using an emergency call button.

[0174] [Variations] (1) Notification method In the above embodiment, when a specific motion is detected, information corresponding to the detected motion is displayed on the display device 35 to notify the operator Op, but the method of notifying the operator Op is not limited to this. Instead of or in addition to displaying on the display device 35, information corresponding to the detected motion may be output as voice or sound to notify the operator Op. Also, a lamp may be turned on or flashed to notify the operator Op.

[0175] (5) Detection of specific actions In the above embodiment, the subject S during the examination is photographed by the camera 14, and a specific movement is detected from the obtained image, but the method of detecting the specific movement is not limited to this. For example, a specific movement may be detected by using an image photographed by the MRI apparatus 1.

[0176] [Other embodiments] (1) A processing unit that provides each function of the operation console The processing units that provide the functions of the operation console 30 can be configured with various processors. The various processors include general-purpose processors such as a CPU and a GPU (Graphic Processing Unit), as well as programmable logic devices (PLDs) that are processors whose circuit configuration can be changed after manufacture such as a Field Programmable Gate Array (FPGA), and dedicated electric circuits that are processors having a circuit configuration designed specifically to execute specific processing such as an Application Specific Integrated Circuit (ASIC). One processing unit may be configured with one of the various processors, or may be configured with two or more processors of the same or different types. For example, one processing unit may be configured with multiple FPGAs, or a combination of a CPU and an FPGA. Also, multiple processing units may be configured with one processor. As an example of configuring multiple processing units with one processor, first, there is a form in which one processor is configured with a combination of one or more CPUs and software, as typified by computers used for clients, servers, etc., and this processor functions as multiple processing units. Secondly, there is a form using a processor that realizes the functions of the entire system including multiple processing units on a single IC (Integrated Circuit) chip, as typified by System on Chip (SoC), etc. In this way, the various processing units are configured as a hardware structure using one or more of the various processors described above.

[0177] (2) Medical imaging diagnostic equipment In the above embodiment, the present invention has been described as being applied to an MRI device, but the application of the present invention is not limited to this. The present invention can be widely applied to medical image diagnostic devices that capture cross-sectional images of subjects, such as CT devices.

[0178] (3)Other The above-described embodiments (including the modified examples) can be used in appropriate combinations. [Explanation of symbols]

[0179] 1...MRI device 10. Gantry 20…Bed 22...Projection device 30…Operation console 31…Processor 31A... Shooting control unit 31B...Image acquisition section 31C…First display control unit 31D...Second display control section 31E...Recording control unit 33…Auxiliary storage device 34...Input device 35...Display device 37...Display information database

Claims

1. A medical imaging diagnostic device for imaging a subject in a bore, comprising: A first display unit that is visible to the subject during the examination; A processor; Equipped with The processor, Acquire first information including information on an examination target site of the subject; displaying second information, including information for causing the subject to operate the examination target portion, on the first display unit based on the first information; Medical imaging diagnostic equipment.

2. The information for causing the subject to move the test target part is information on a movement of physically moving a specific part of the body. The medical image diagnostic apparatus according to claim 1 .

3. The first information further includes information on a test purpose and information on an action to be performed by the subject. The medical image diagnostic apparatus according to claim 2 .

4. The second information includes information on a part of the body to be moved and information on how to move the part. The medical image diagnostic apparatus according to claim 3 .

5. The information on the manner of movement includes information on the start position of the movement of the part and information on the end position of the movement of the part. The medical image diagnostic apparatus according to claim 4.

6. When moving a specific part of the body in a stepwise manner, the information on the movement method includes information on a position where the part is to be stopped. The medical image diagnostic apparatus according to claim 4.

7. The second information includes information showing the part of the body to be moved and the way of moving it by an illustration or animation. The medical image diagnostic apparatus according to claim 3 .

8. A first detector configured to detect a motion of the subject within the bore, The processor, determining whether a requested action has been performed based on a detection result of the first detection unit; notifying the subject of the result of the determination; The medical image diagnostic apparatus according to any one of claims 2 to 7.

9. The processor, displaying information on the movement of the subject in the bore together with the second information on the first display unit based on a detection result of the first detection unit; The medical image diagnostic apparatus according to claim 8.

10. A first detector configured to detect a motion of the subject within the bore, The processor, generating guide information for the subject to perform a requested action based on a detection result of the first detection unit; notifying the subject of the guide information; The medical image diagnostic apparatus according to any one of claims 2 to 7.

11. The processor, displaying information on the movement of the subject in the bore together with the second information on the first display unit based on a detection result of the first detection unit; The medical image diagnostic apparatus according to claim 10.

12. A first detector for detecting a motion of the subject within the bore; A second display unit that is visible to an operator; Further comprising: The processor causes the second display unit to display information on the movement of the subject in the bore based on a detection result of the first detection unit. The medical image diagnostic apparatus according to any one of claims 2 to 7.

13. The processor, determining whether a requested action has been performed based on a detection result of the first detection unit; notifying the operator of the determination result; The medical image diagnostic apparatus according to claim 12.

14. The processor, generating guide information for the subject to perform a requested action based on a detection result of the first detection unit; notifying the operator of the guide information; The medical image diagnostic apparatus according to claim 12.

15. A second detection unit that detects a specific motion by the subject, The processor notifies an operator when the specific motion is detected by the second detection unit. The medical image diagnostic apparatus according to claim 1 .

16. 1. A method of operating a medical imaging diagnostic apparatus for imaging a subject within a bore, comprising: Acquire first information including information on an examination target site of the subject; displaying second information, including information for causing the subject to operate the examination target portion, on a first display unit viewable by the subject during the examination, based on the first information; A method for operating a medical imaging device.

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