Medical image diagnostic apparatus, x-ray ct apparatus, and medical image diagnostic system

Abstract

To simply set an appropriate inspection condition corresponding to analysis information of a biological monitor.SOLUTION: A medical image diagnostic apparatus according to an embodiment comprises a first acquisition part, a second acquisition part, and a setting part. The first acquisition part acquires biological information on an analyte collected by a biological monitor. The second acquisition part acquires analysis information obtained by analyzing the biological information. The setting part sets an inspection condition for obtaining an image by photographing the analyte, on the basis of the biological information and the analysis information.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] An embodiment of the present invention relates to a medical image diagnostic apparatus, an X-ray CT apparatus, and a medical image diagnostic system. [Background technology]

[0002] In examinations using medical imaging diagnostic equipment such as X-ray CT equipment (CT: Computed Tomography), artifacts may occur in the obtained medical images due to the influence of the movement of organs such as the heart. For this reason, for example, in X-ray CT equipment, in order to eliminate the influence of the movement of the heart, ECG-synchronized reconstruction is performed, in which the electrocardiogram waveform of the subject is measured in parallel with the collection of projection data, image data is collected based on the electrocardiogram waveform, and a CT image is reconstructed.

[0003] Meanwhile, in cardiology and the like, biological monitors with an analysis function are sometimes used. For example, an electrocardiograph with an analysis function has a function of outputting a diagnosis, a measurement value, etc. obtained by analyzing an electrocardiogram waveform. Such a diagnosis, a measurement value, etc. may be useful for setting appropriate examination conditions according to the pathology of a subject in an examination using a medical image diagnostic device.

[0004] However, radiologists in the radiology department who perform examinations using medical imaging diagnostic devices such as X-ray CT scans are often not familiar with pathological conditions related to the circulatory system. In this case, the radiologists are likely to be unable to set appropriate examination conditions according to the pathological condition of the subject. In this way, in examinations using imaging diagnostic devices, analytical information obtained by analyzing information acquired from a vital sign monitor may not be fully utilized. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2001-276061 A Summary of the Invention [Problem to be solved by the invention]

[0006] The problem to be solved by the present invention is to easily set appropriate test conditions according to analytical information from a biological monitor. However, the problem to be solved by the embodiments disclosed in this specification and the drawings is not limited to the above problem. Problems corresponding to the effects of each configuration shown in the embodiments described later can also be positioned as other problems. [Means for solving the problem]

[0007] A medical image diagnostic apparatus according to an embodiment includes a first acquisition unit, a second acquisition unit, and a setting unit. The first acquisition unit acquires biological information on a subject collected by a biological monitor. The second acquisition unit acquires analysis information obtained by analyzing the biological information. The setting unit sets examination conditions for photographing the subject and obtaining an image based on the biological information and the analysis information. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing an example of the configuration of an X-ray CT apparatus according to an embodiment. [Diagram 2] FIG. 2 is a diagram showing an example of a data configuration of the inspection condition DB according to the embodiment. [Diagram 3] FIG. 3 is a diagram illustrating an example of setting of inspection conditions according to the embodiment. [Figure 4] FIG. 4 is a diagram illustrating an example of setting of inspection conditions according to the embodiment. [Diagram 5] FIG. 5 is a diagram illustrating an example of setting the inspection conditions according to the embodiment. [Figure 6] FIG. 6 is a diagram illustrating an example of setting the inspection conditions according to the embodiment. [Figure 7] FIG. 7 is a flowchart showing an example of processing executed by the X-ray CT apparatus according to the embodiment. [Figure 8] FIG. 8 is a diagram showing an example of the configuration of an X-ray CT apparatus according to the third modification. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an X-ray CT (Computed Tomography) apparatus will be described in detail below with reference to the accompanying drawings. An X-ray CT apparatus is an example of a medical image diagnostic apparatus.

[0010] Fig. 1 is a diagram showing an example of the configuration of an X-ray CT apparatus 1 according to an embodiment. As shown in Fig. 1, the X-ray CT apparatus 1 according to an embodiment includes a gantry 10, a bed apparatus 20, and a console 30. As shown in Fig. 1, the X-ray CT apparatus 1 is connected to an electrocardiograph 40. Note that a system configured with the X-ray CT apparatus 1 and the electrocardiograph 40 is an example of a medical image diagnostic system.

[0011] The gantry 10 is a device that irradiates an object P (patient) with X-rays, detects the X-rays that have passed through the object P, and outputs the detected X-rays to a console 30. The gantry 10 has an X-ray irradiation control circuit 11, an X-ray generator 12, a detector 13, a data acquisition circuit (DAS: Data Acquisition System) 14, a rotating frame 15, and a gantry drive circuit 16.

[0012] 1, an orthogonal coordinate system consisting of an X-axis, a Y-axis, and a Z-axis is defined for the gantry 10. That is, the X-axis indicates the horizontal direction, the Y-axis indicates the vertical direction, and the Z-axis indicates the direction of the rotation center axis of the rotating frame 15 when the gantry 10 is in a non-tilted state.

[0013] The rotating frame 15 is an annular frame that supports the X-ray generator 12 and the detector 13 so that they face each other across the subject P, and is rotated at high speed on a circular orbit around the subject P by a gantry drive circuit 16 described later.

[0014] The X-ray irradiation control circuit 11 is a device that serves as a high voltage generator and supplies a high voltage to the X-ray tube 12a, and the X-ray tube 12a generates X-rays using the high voltage supplied from the X-ray irradiation control circuit 11. The X-ray irradiation control circuit 11 adjusts the amount of X-rays irradiated to the subject P by adjusting the tube voltage and tube current supplied to the X-ray tube 12a under the control of a scan control circuit 33, which will be described later.

[0015] Furthermore, the X-ray irradiation control circuit 11 switches the wedge 12b. Furthermore, the X-ray irradiation control circuit 11 adjusts the aperture of the collimator 12c to adjust the X-ray irradiation range (fan angle and cone angle). Note that in this embodiment, the operator may manually switch between multiple types of wedges.

[0016] The X-ray generating device 12 is a device that generates X-rays and irradiates the object P with the generated X-rays, and includes an X-ray tube 12a, a wedge 12b, and a collimator 12c.

[0017] The X-ray tube 12a is a vacuum tube that irradiates an X-ray beam onto the subject P using a high voltage supplied by a high voltage generating unit (not shown), and irradiates the X-ray beam onto the subject P as the rotating frame 15 rotates. The X-ray tube 12a generates an X-ray beam that spreads with a fan angle and a cone angle.

[0018] For example, under the control of the X-ray irradiation control circuit 11, the X-ray tube 12a can continuously irradiate X-rays all around the subject P for full reconstruction, or continuously irradiate X-rays in an exposure range (180 degrees + fan angle) allowing half reconstruction for half reconstruction. In addition, under the control of the X-ray irradiation control circuit 11, the X-ray tube 12a can intermittently irradiate X-rays (pulsed X-rays) at a preset position (tube position).

[0019] The X-ray irradiation control circuit 11 can also modulate the intensity of the X-rays emitted from the X-ray tube 12a. For example, the X-ray irradiation control circuit 11 increases the intensity of the X-rays emitted from the X-ray tube 12a at a specific tube position, and decreases the intensity of the X-rays emitted from the X-ray tube 12a in a range other than the specific tube position.

[0020] The wedge 12b is an X-ray filter for adjusting the amount of X-rays emitted from the X-ray tube 12a.

[0021] Specifically, the wedge 12b is a filter that transmits and attenuates the X-rays emitted from the X-ray tube 12a so that the X-rays irradiated from the X-ray tube 12a to the subject P have a predetermined distribution. For example, the wedge 12b is a filter made of processed aluminum so as to have a predetermined target angle and a predetermined thickness. The wedge is also called a wedge filter or a bow-tie filter.

[0022] The collimator 12c is a slit for narrowing down the irradiation range of the X-rays whose amount has been adjusted by the wedge 12b under the control of the X-ray irradiation control circuit 11 described later.

[0023] The gantry drive circuit 16 rotates the rotating frame 15 to rotate the X-ray generator 12 and the detector 13 on a circular orbit with the subject P at the center.

[0024] The detector 13 is a two-dimensional array detector (surface detector) that detects X-rays that have passed through the subject P, and multiple rows of detection elements each having multiple channels of X-ray detection elements are arranged along the body axis of the subject P (the Z-axis direction shown in Figure 1).

[0025] Specifically, the detector 13 in this embodiment has X-ray detection elements arranged in multiple rows, such as 320 rows, along the body axis direction of the subject P, and is capable of detecting X-rays that have passed through the subject P over a wide area, such as an area including the lungs and heart of the subject P.

[0026] The data acquisition circuit 14 is a DAS, and acquires projection data from the detection data of the X-rays detected by the detector 13 .

[0027] For example, the data acquisition circuitry 14 performs amplification, A / D conversion, inter-channel sensitivity correction, etc. on the X-ray intensity distribution data detected by the detector 13 to generate projection data, and transmits the generated projection data to a console 30 described later. As an example, when X-rays are continuously irradiated from the X-ray tube 12a while the rotating frame 15 is rotating, the data acquisition circuitry 14 collects a group of projection data for the entire circumference (360 degrees).

[0028] The data acquisition circuitry 14 also associates each acquired projection data with a tube position and transmits the data to the console 30, which will be described later. The tube position is information indicating the projection direction of the projection data. Note that the sensitivity correction process between channels may be performed by the pre-processing circuitry 34, which will be described later.

[0029] 1, the bed device 20 has a bed driving device 21 and a tabletop 22. The bed driving device 21 moves the tabletop 22 in the Z-axis direction to move the subject P into the rotating frame 15. The tabletop 22 is a plate on which the subject P is placed.

[0030] Here, the gantry 10 performs, for example, a helical scan in which the rotating frame 15 is rotated while the top plate 22 is moved to scan the subject P in a spiral shape. Alternatively, the gantry 10 performs a conventional scan in which the subject P is scanned in a circular orbit by rotating the rotating frame 15 while keeping the position of the subject P fixed after moving the top plate 22. Alternatively, the gantry 10 performs a step-and-shoot method in which the position of the top plate 22 is moved at regular intervals to perform a conventional scan in a plurality of scan areas.

[0031] The console 30 is a device that accepts operations of the X-ray CT apparatus 1 by an operator, and reconstructs X-ray CT image data using the projection data collected by the gantry 10. As shown in FIG. 1, the console 30 has an input circuitry 31, a display 32, a scan control circuitry 33, a preprocessing circuitry 34, a memory circuitry 35, an image reconstruction circuitry 36, and a processing circuitry 37.

[0032] The input circuitry 31 has a mouse, keyboard, trackball, switches, buttons, joystick, etc. that the operator of the X-ray CT device 1 uses to input various instructions and settings, and transfers the instructions and setting information received from the operator to the processing circuitry 37.

[0033] For example, the input circuitry 31 accepts an operation for selecting an examination for the subject P. The input circuitry 31 also accepts a designation operation for designating a region on an image. The input circuitry 31 may also accept imaging conditions for X-ray CT image data, reconstruction conditions for reconstructing the X-ray CT image data, image processing conditions for the X-ray CT image data, and the like from the operator.

[0034] The display 32 is a monitor referenced by the operator, and under the control of the processing circuitry 37, displays image data generated from X-ray CT image data to the operator, and also displays a GUI (Graphical User Interface) for receiving various instructions and settings from the operator via the input circuitry 31.

[0035] The scan control circuit 33, under the control of the processing circuitry 37, controls the operation of the X-ray irradiation control circuitry 11, the gantry driving circuitry 16, the data collection circuitry 14, and the bed driving device 21, thereby controlling the collection process of projection data in the gantry 10.

[0036] Specifically, the scan control circuit 33 controls the imaging for acquiring positioning images (scanograms) and the collection processing of projection data in the main imaging (scan) for acquiring images used for diagnosis, in accordance with the imaging conditions set by the processing circuit 37. The determination of the imaging conditions by the processing circuit 37 will be described later. Here, the X-ray CT device 1 according to this embodiment can acquire two-dimensional scanograms and three-dimensional scanograms.

[0037] For example, the scan control circuit 33 fixes the X-ray tube 12a at a 0 degree position (a position in front of the subject P) and captures two-dimensional scanned images by continuously capturing images while moving the top board 22 at a constant speed.

[0038] Alternatively, the scan control circuit 33 fixes the X-ray tube 12a at the 0 degree position and intermittently moves the top 22 while repeating intermittent shooting in synchronization with the movement of the top to capture a two-dimensional scanogram. Here, the scan control circuit 33 can capture positioning images not only from the front direction of the subject P, but also from any direction (for example, a side direction, etc.).

[0039] Furthermore, in capturing a scanogram, the scan control circuit 33 can capture a three-dimensional scanogram by collecting projection data for the entire circumference of the subject P. For example, the scan control circuit 33 can collect projection data for the entire circumference of the subject P by helical scanning or non-helical scanning.

[0040] Here, the scan control circuit 33 can execute a helical scan or a non-helical scan at a lower dose than that of the actual imaging for a wide range such as the entire chest, the entire abdomen, the entire upper body, or the entire body of the subject P. As a non-helical scan, for example, the above-mentioned step-and-shoot scan is executed.

[0041] In this way, the scan control circuit 33 collects projection data for the entire circumference of the subject P, allowing the image reconstruction circuit 36 ​​described later to reconstruct three-dimensional X-ray CT image data (volume data), and the reconstructed volume data can be used to generate positioning images from any direction.

[0042] Whether the positioning image is captured two-dimensionally or three-dimensionally may be arbitrarily set by the operator, or may be set in advance according to the contents of the examination.

[0043] The pre-processing circuitry 34 performs logarithmic conversion processing and correction processing such as offset correction, sensitivity correction, and beam hardening correction on the projection data generated by the data acquisition circuitry 14 to generate corrected projection data.

[0044] Specifically, the pre-processing circuitry 34 generates corrected projection data for each of the projection data of the positioning image generated by the data acquisition circuitry 14 and the projection data acquired by the main imaging, and stores the corrected projection data in the memory circuitry 35.

[0045] The memory circuitry 35 stores various information. For example, the memory circuitry 35 stores the projection data generated by the pre-processing circuitry 34. Specifically, the memory circuitry 35 stores the projection data of the positioning image generated by the pre-processing circuitry 34 and the projection data for diagnosis collected by the main imaging.

[0046] The memory circuitry 35 also stores an inspection condition DB 351. The inspection condition DB 351 is a database for determining inspection conditions in an X-ray CT inspection. The inspection conditions are, for example, imaging conditions for imaging a subject to obtain an image and reconstruction conditions. An example of the data configuration of the inspection condition DB 351 will be described below with reference to FIG. 2. FIG. 2 is a diagram showing an example of the data configuration of the inspection condition DB 351.

[0047] The examination condition DB 351 in Fig. 2 stores diagnostic information and examination conditions in association with each other. The diagnostic information in Fig. 2 is information representing electrocardiogram findings obtained by analyzing an electrocardiogram waveform output from an electrocardiogram 40. The means for analyzing the electrocardiogram waveform is not particularly limited, and various known analysis techniques can be adopted. The examination conditions in Fig. 2 are information representing the imaging conditions and reconstruction conditions of an X-ray CT examination.

[0048] The imaging conditions in Fig. 2 are information that specifies the operation of the gantry 10 and the bed driving device 21, etc., and the timing of X-ray exposure, etc. The reconstruction conditions in Fig. 2 are information that specifies the timing at which the obtained X-ray CT image data is to be reconstructed, etc.

[0049] As an example, the first line in Figure 2 shows that when the diagnostic information is "regular pulse (sinus rhythm) and heart rate is 65 bpm or less," the examination conditions are that the shooting condition is "exposure limited to mid-diastolic phase" and the reconstruction condition is "reconstruct mid-diastolic phase."

[0050] Returning to Fig. 1, the description will be continued. Under the control of the processing circuitry 37, the image reconstruction circuitry 36 reconstructs X-ray CT image data using the projection data stored in the memory circuitry 35. Specifically, the image reconstruction circuitry 36 reconstructs X-ray CT image data from the projection data of the positioning image and the projection data of the image used for diagnosis, in accordance with the reconstruction conditions set by the processing circuitry 37. The determination of the reconstruction conditions by the processing circuitry 37 will be described later.

[0051] Here, there are various methods for the reconstruction method, such as back projection processing. In addition, as the back projection processing, for example, back projection processing by FBP (Filtered Back Projection) method can be mentioned. Alternatively, the image reconstruction circuit 36 ​​can reconstruct the X-ray CT image data by using an iterative approximation method.

[0052] The image reconstruction circuitry 36 generates image data by performing various image processing on the X-ray CT image data. The image reconstruction circuitry 36 stores the reconstructed X-ray CT image data and the image data generated by the various image processing in the memory circuitry 35.

[0053] The processing circuitry 37 controls the operations of the gantry 10 , the bed device 20 , and the console 30 , thereby performing overall control of the X-ray CT apparatus 1 .

[0054] Specifically, the processing circuitry 37 controls the scan control circuitry 33 to control the CT scan performed on the gantry 10. The processing circuitry 37 also controls the image reconstruction circuitry 36 to control the image reconstruction processing and image generation processing in the console 30. The processing circuitry 37 also controls the display 32 to display various image data stored in the memory circuitry 35.

[0055] The electrocardiograph 40 is attached to the subject P and collects electrocardiogram data from the subject P. The electrocardiograph 40 also acquires an electrocardiogram waveform of the subject P based on the collected electrocardiogram data. The electrocardiograph 40 transmits the acquired electrocardiogram waveform to the console 30. In this embodiment, the electrocardiogram waveform is transmitted by the electrocardiograph 40 in real time. The console 30 stores the electrocardiogram waveform received from the electrocardiograph 40 in the memory circuitry 35.

[0056] In other words, the memory circuit 35 stores the electrocardiogram waveform. Here, the period of one cycle of the electrocardiogram waveform is standardized as 0 to 100%, and each position in this period is expressed as a percentage, which is called a cardiac phase. For example, in the cardiac phase, the indefinite period from an R wave to the next R wave is standardized as 0 to 100%.

[0057] Furthermore, the electrocardiograph 40 transmits analysis information obtained by analyzing the electrocardiographic waveform acquired from the subject P to the console 30. The console 30 stores the analysis information received from the electrocardiograph 40 in the memory circuitry 35. The electrocardiograph 40 may delay the timing of transmission of the analysis information of the electrocardiographic waveform relative to the transmission of the electrocardiographic waveform. This allows the electrocardiograph 40 to transmit the analysis information to the X-ray CT apparatus 1 even if the analysis takes a long time.

[0058] The analysis information includes diagnostic information and measurement information. The diagnostic information is information that indicates the pathological condition of the subject. For example, the diagnostic information is information that expresses the findings of an electrocardiogram test of subject P using the Minnesota Code, which is a coding system for objectively and uniformly expressing the findings of an electrocardiogram test.

[0059] Examples of the diagnostic information include information indicating normal (sinus rhythm), atrioventricular block, PQ shortening, pacemaker in operation, premature ventricular contraction, premature ventricular contraction (bigemina), atrial fibrillation, etc. Note that the above is just an example, and the diagnostic information is not limited to this.

[0060] Moreover, the measurement information is information indicating the characteristics of the biological information. For example, the measurement information is information that can be expressed as a numerical value calculated based on an electrocardiogram waveform. Examples of the measurement information include the PR (PQ) interval, the RR interval, the heart rate change, and the frequency of arrhythmia. Note that the above is an example, and the measurement information is not limited to this.

[0061] The above describes the overall configuration of the X-ray CT apparatus 1 according to this embodiment. With this configuration, the X-ray CT apparatus 1 according to this embodiment has a function of acquiring analysis information of the subject P and setting appropriate examination conditions according to the pathological condition of the subject P based on the analysis information.

[0062] In order to realize the above functions, the processing circuit 37 executes a system control function 37a, a display control function 37b, a first acquisition function 37c, a second acquisition function 37d, and a setting function 37e shown in Fig. 1. The first acquisition function 37c is an example of a first acquisition unit. The second acquisition function 37d is an example of a second acquisition unit. The setting function 37e is an example of a setting unit.

[0063] Here, for example, each of the processing functions executed by the system control function 37a, the display control function 37b, the first acquisition function 37c, the second acquisition function 37d, and the setting function 37e, which are components of the processing circuit 37 shown in FIG. 1, are recorded in the memory circuit 35 in the form of a program executable by a computer.

[0064] The processing circuitry 37 is a processor that realizes a function corresponding to each program by reading and executing each program from the storage circuitry 35. In other words, the processing circuitry 37 in a state in which each program has been read has each function shown in the processing circuitry 37 in FIG.

[0065] The system control function 37a comprehensively controls the operation of the entire X-ray CT apparatus 1. For example, the system control function 37a controls the operation of the scan control circuit 33 to execute a scan of the subject P according to the imaging conditions set by the setting function 37e described later. Also, for example, the system control function 37a controls the image reconstruction circuit 36 ​​to execute an image generation process according to the reconstruction conditions set by the setting function 37e.

[0066] The display control function 37b controls the display of various information on the display device. For example, the display control function 37b controls the display of image data generated by the image reconstruction circuit 36 ​​based on X-ray CT image data on the display 32. In addition, for example, the display control function 37b controls the display of a GUI for receiving various instructions and various settings from an operator via the input circuit 31 on the display 32.

[0067] The display control function 37b may perform control to display information indicating examination conditions used for the examination of the subject P on the display 32, etc.

[0068] The first acquisition function 37c acquires an electrocardiogram waveform of the subject P collected by the electrocardiograph 40. The electrocardiograph 40 is an example of a biological monitor. The electrocardiogram waveform is an example of biological information. For example, the first acquisition function 37c acquires the electrocardiogram waveform of the subject P transmitted from the electrocardiograph 40 to the console 30 in real time.

[0069] The second acquisition function 37d acquires analysis information obtained by analyzing the electrocardiogram waveform of the subject P. For example, the second acquisition function 37d acquires diagnostic information indicating electrocardiogram findings of the subject P expressed in the Minnesota code transmitted from the electrocardiograph 40 to the console 30, and measurement information such as the heart rate, PR interval, RR interval, and frequency of arrhythmia. The diagnostic information and measurement information are examples of analysis information.

[0070] The setting function 37e sets the examination conditions based on the electrocardiogram waveform acquired by the first acquisition function 37c and the diagnosis information and measurement information acquired by the second acquisition function 37d.

[0071] For example, the setting function 37e refers to the examination condition DB 122 of the storage circuitry 35 and specifies the imaging conditions and reconstruction conditions corresponding to the diagnostic information acquired by the second acquisition function 37d. The setting function 37e also sets the specified imaging conditions and reconstruction conditions according to the measurement information acquired by the second acquisition function 37d. Hereinafter, an example of the operation of the setting function 37e will be described with reference to Figs. 3 to 6.

[0072] First, a case will be described where the diagnostic information acquired by the second acquisition function 37d is "regular pulse (sinus rhythm) and 65 bpm or less." In this case, the setting function 37e refers to the examination condition DB 122 in the storage circuitry 35 and specifies the imaging condition and reconstruction condition corresponding to "regular pulse (sinus rhythm) and 65 bpm or less." In the example of FIG. 2, the setting function 37e specifies "exposure limited to mid-diastolic phase" as the imaging condition and "reconstruct mid-diastolic phase" as the reconstruction condition.

[0073] Next, the setting function 37e sets the imaging condition according to "exposure limited to mid-diastolic phase" based on the measurement information acquired by the second acquisition function 37d. Similarly, the setting function 37e sets the reconstruction condition according to "reconstruction of mid-diastolic phase". Hereinafter, an example of the operation of the setting function 37e when the diagnosis information is "regular pulse (sinus rhythm) and 65 bpm or less" will be described with reference to FIG. 3.

[0074] Fig. 3 is a diagram for explaining an example of setting examination conditions. The waveform in Fig. 3 represents an electrocardiogram waveform in a case where the electrocardiogram findings of the subject P are rhythmic (sinus rhythm) and the heart rate is 65 bpm or less. Point RP1 represents the peak of the R wave of the subject P used to set the imaging conditions. Point RP2 represents the peak of the R wave next to the R wave having point RP1. Period RR1 represents the time from point RP1 to point RP2 (RR interval).

[0075] 3, the setting function 37e specifies a time SP1 that represents 75% of the period RR1 when the appearance time of the point RP1 is 0% and the appearance time of the point RP2 is 100%. The time SP1 represents a time near the middle of the mid-diastole.

[0076] Next, the setting function 37e predicts the time SP2 corresponding to the time SP1 in the next RR interval of the period RR1, assuming that the RR interval is constant. The setting function 37e also determines the X-ray exposure start time ES1 and the exposure end time EE1 so that the predicted time SP2 corresponds to the middle time EC of the X-ray exposure time and the subject P is exposed to X-rays for 250 ms. In other words, the setting function 37e sets the imaging timing ST1 included in the imaging conditions.

[0077] The setting function 37e also sets conditions for operating the gantry 10, the bed driving device 21, etc. so that the subject P is exposed to X-rays at the imaging timing set as described above. In this embodiment, these conditions are also included in the imaging conditions.

[0078] Moreover, the setting function 37e sets the reconstruction timing RT1 included in the reconstruction conditions so that data during the period during which the subject P is irradiated with X-rays is reconstructed according to the set imaging conditions.

[0079] Next, a case where the diagnosis information acquired by the second acquisition function 37d is "atrioventricular block" will be described. In this case, the setting function 37e refers to the examination condition DB 122 in the storage circuitry 35 and specifies the imaging condition and the reconstruction condition corresponding to "atrioventricular block". In the example of Fig. 2, the setting function 37e specifies "correct the HR threshold according to the PR time" as the imaging condition and "reconstruct immediately before the P wave using PR period information" as the reconstruction condition.

[0080] Next, the setting function 37e sets the imaging condition according to "correct the HR threshold according to the PR time" based on the measurement information acquired by the second acquisition function 37d. Similarly, the setting function 37e sets the reconstruction condition according to "reconstruct immediately before the P wave using PR period information." Hereinafter, an example of the operation of the setting function 37e when the diagnosis information is "atrioventricular block" will be described with reference to FIG. 4.

[0081] Fig. 4 is a diagram for explaining an example of setting examination conditions. The waveform in Fig. 4 represents an electrocardiogram waveform when the electrocardiogram finding of subject P is atrioventricular block. Point PS represents the onset of the P wave of subject P used for setting the imaging conditions. Point RS1 represents the onset of the R wave used for setting the imaging conditions. Period PR represents the time from point PS to point RS1 (PR interval).

[0082] In the example of Fig. 4, the setting function 37e predicts the time when the next P wave will rise based on the period PR. Next, the setting function 37e sets the time immediately before (for example, 5 ms before) the predicted rise time of the next P wave as the exposure end time EE2. The setting function 37e also sets the time 250 ms before the exposure end time EE2 as the exposure start time ES2. In other words, the setting function 37e sets the imaging timing ST2. The setting function 37e may predict the time when the next P wave will rise based on the PQ interval or the RR interval.

[0083] Moreover, the setting function 37e sets the reconstruction timing RT2 so as to reconstruct data during the period in which the subject P is irradiated with X-rays according to the set imaging conditions.

[0084] Next, a case where the diagnosis information acquired by the second acquisition function 37d is "atrial fibrillation" will be described. In this case, the setting function 37e refers to the examination condition DB 122 in the storage circuitry 35 and specifies the imaging condition and the reconstruction condition corresponding to "atrial fibrillation." In the example of FIG. 2, the setting function 37e specifies "prepare free space so that data can be collected over several seconds" as the imaging condition and "reconstruct the rear end of the above 250 ms" as the reconstruction condition.

[0085] Next, the setting function 37e sets the imaging condition according to "prepare free space so that data can be collected for several seconds" based on the measurement information acquired by the second acquisition function 37d. Similarly, the setting function 37e sets the reconstruction condition according to "reconstruct the rear end of the above 250 ms". Hereinafter, an example of the operation of the setting function 37e when the diagnosis information is "atrial fibrillation" will be described with reference to FIG. 5.

[0086] Fig. 5 is a diagram for explaining an example of setting of examination conditions. The waveform in Fig. 5 represents an electrocardiogram waveform in the case where the electrocardiogram finding of the subject P is atrial fibrillation. Points RS2 to RS8 represent the rising edge of the R wave used for setting the imaging conditions.

[0087] In the example of Fig. 5, the setting function 37e detects the rising edge of an R wave. When the rising edge of an R wave is detected, the setting function 37e starts counting time. When the rising edge of the next R wave is detected before 450 ms has elapsed from the start of counting, the setting function 37e resets the time count (indicated by an x ​​mark in the figure). In Fig. 5, the setting function 37e resets the time count from RS2 to RS6.

[0088] 5, when RS7 is detected, the setting function 37e sets the time when the time count reaches 450 ms as the exposure start time ES3. In this case, X-ray exposure to the subject P is started immediately. Therefore, when the electrocardiogram finding of the subject P is atrial fibrillation, the setting function 37e sets in advance the conditions for operating the gantry 10, the bed driving device 21, etc. so that X-ray exposure can be started at any time.

[0089] The setting function 37e also starts counting the time from the start of exposure, and sets the time when the time count reaches 250 ms as the exposure start time EE3. In other words, the setting function 37e sets the imaging timing ST3. If the next R wave is detected before 250 ms has elapsed from the exposure start time ES3, the system control function 37a terminates the exposure. The setting function 37e also resets the count of the time from the start of exposure.

[0090] If the next R wave is not detected even after 250 ms has elapsed, the exposure may be continued beyond 250 ms. In this case, the setting function 37e may set the time when the rising edge of the next R wave (RS8 in FIG. 5) is detected as the exposure end time EE3.

[0091] Furthermore, the setting function 37e sets the reconstruction timing RT3 according to the set imaging conditions so as to reconstruct data for a period during which the subject P was exposed to X-rays. If the subject P was exposed to X-rays for more than 250 ms, the setting function 37e may determine the reconstruction timing to be from a time 250 ms before the exposure end time EE3 to the exposure end time EE3.

[0092] Next, a case where the diagnostic information acquired by the second acquisition function 37d is "premature ventricular contraction (bigemina)" will be described. In this case, the setting function 37e refers to the examination condition DB 122 in the storage circuitry 35 and specifies the imaging condition and the reconstruction condition corresponding to "premature ventricular contraction (bigemina)". In the example of Fig. 2, the setting function 37e specifies "imaging by targeting the latter half of a long RR" as the imaging condition and "reconstructing the latter half of a long RR" as the reconstruction condition.

[0093] Next, the setting function 37e sets the imaging conditions according to "imaging targeting the latter half of the long RR" based on the measurement information acquired by the second acquisition function 37d. Similarly, the setting function 37e sets the reconstruction conditions according to "reconstructing the latter half of the long RR". Hereinafter, an example of the operation of the setting function 37e when the diagnosis information is "premature ventricular contraction (bigemina)" will be described with reference to FIG. 6.

[0094] Fig. 6 is a diagram for explaining an example of setting examination conditions. The waveform in Fig. 6 represents an electrocardiogram waveform when the electrocardiogram finding of subject P is ventricular extrasystole (bigeminy). Point RP3 represents the peak of a certain R wave of subject P. Point RP4 represents the peak of an R wave used to set imaging conditions. Point RP5 represents the peak of the R wave next to the R wave having point RP4. Point RP6 represents the peak of the R wave next to the R wave having point RP5.

[0095] The period RR3 represents the time from point RP3 to point RP4. The period RR3 represents a short RR interval. The period RR4 represents the time from point RP4 to point RP5. The period RR4 represents a long RR interval. The period RR5 represents the time from point RP5 to point RP6. The period RR5 represents a short RR interval.

[0096] 6, the setting function 37e detects a finding NP representing the disappearance of a P wave and a finding BW representing a wide QRS wave from the waveform from point RP3 to point RP4. When the finding NP and the finding BW are detected, the setting function 37e detects a point PS2 representing the onset of the next P wave from the waveform from point RP4 to point RP5.

[0097] When the setting function 37e detects the findings NP and BW from the waveform from point RP5 to point RP6, it assumes that the RR interval from point RP6 to the peak of the next R wave (anticipated point RP7) is the same as the period RR4, and sets the imaging timing to the latter half of the RR interval.

[0098] As an example, the setting function 37e starts counting the time from the time when the peak of the wide QRS (point RP6 in FIG. 6) is detected. The setting function 37e determines the time when the time count exceeds a predetermined time as the exposure start time ES4. Note that the predetermined time may be determined for each subject P based on a long RR interval when bigeminy was detected in the same subject P in the past.

[0099] The setting function 37e also determines the time corresponding to point PS2 detected from the waveform from point RP4 to point RP5 in the RR interval from point RP6 to the peak of the next R wave as the exposure end time EE4. In other words, the setting function 37e sets the imaging timing ST4. The setting function 37e also determines the time from 250 ms before the exposure end time EE4 to the exposure end time EE4 as the reconstruction timing RT4. Note that if the exposure time is less than 250 ms, imaging may be repeated until it reaches 250 ms.

[0100] The setting function 37e may also predict the rising time of the next P wave based on a long RR interval when bigeminy was previously detected in the same subject P, and set the predicted time as the exposure end time and the exposure start time 250 ms before the predicted exposure end time. In addition, when the frequency of arrhythmia is acquired as the measurement information and the frequency of arrhythmia is less than a threshold, the setting function 27e may set the examination conditions by regarding it as a rhythmic rhythm.

[0101] As described above, some examples of setting the inspection conditions have been explained, but the above are merely examples, and the settings of the inspection conditions are not limited to those described above.

[0102] Next, a description will be given of processing executed by the X-ray CT apparatus 1 according to the embodiment. Fig. 7 is a flowchart showing an example of processing executed by the X-ray CT apparatus 1 according to the embodiment.

[0103] First, the first acquisition function 37c acquires an electrocardiogram waveform (step S101). For example, the first acquisition function 37c acquires electrocardiogram waveform data transmitted in real time from the electrocardiograph 40. Next, the second acquisition function 37d acquires analysis information (step S102). For example, the second acquisition function 37d acquires diagnosis information and measurement information obtained by analyzing the electrocardiogram waveform transmitted from the electrocardiograph 40.

[0104] Next, the setting function 37e sets the imaging conditions. For example, the setting function 37e refers to the examination condition DB 351 in the storage circuitry 35, and specifies the imaging conditions corresponding to the diagnostic information acquired in step S102. In addition, the setting function 37e sets the imaging timing and the operating conditions of each part of the X-ray CT device 1 according to the specified imaging conditions, based on the measurement information acquired in step S102.

[0105] Next, the setting function 37e sets the reconstruction conditions (step S103). For example, the setting function 37e refers to the inspection condition DB 351 of the storage circuitry 35, and identifies the reconstruction conditions corresponding to the diagnosis information acquired in step S102. The setting function 37e also sets the reconstruction timing according to the identified reconstruction conditions, based on the measurement information acquired in step S102.

[0106] Next, the system control function 37a controls the operation of each part of the X-ray CT device 1 to scan the subject P (step S104). For example, the system control function 37a controls the scan control circuit 33 according to the imaging conditions set in step S. Under the control of the system control function 37a, the scan control circuit 33 controls the operation of the gantry 10 and the bed driving device 21 to irradiate the subject P with X-rays.

[0107] Next, the system control function 37a reconstructs the X-ray CT image data (step S105) and ends this process. For example, the system control function 37a controls the image reconstruction circuit 36 ​​according to the reconstruction conditions set in step S103. The image reconstruction circuit 36 ​​reconstructs the X-ray CT image data based on the scan performed in step S104 to generate image data.

[0108] As described above, the X-ray CT device 1 of this embodiment acquires the electrocardiogram waveform of the subject P collected by the electrocardiograph 40, acquires analytical information obtained by analyzing the electrocardiogram waveform, and sets examination conditions based on the electrocardiogram waveform and the analytical information.

[0109] Thereby, for example, by simply acquiring an electrocardiogram waveform, diagnostic information, and measurement information, it is possible to automatically set imaging conditions and reconstruction conditions according to the diagnostic information. Moreover, the diagnostic information is information reflecting the pathological condition of the subject P. Therefore, it can be said that the X-ray CT apparatus 1 according to the embodiment can set imaging conditions and reconstruction conditions according to the pathological condition of the subject P. Therefore, according to the X-ray CT apparatus 1 according to the present embodiment, even if a medical professional such as a radiologist who performs an X-ray CT examination on the subject P is not familiar with pathological conditions related to the circulatory system, it is possible to easily set appropriate imaging conditions and reconstruction conditions according to the pathological condition of the subject P.

[0110] In addition, the X-ray CT apparatus 1 according to the present embodiment may acquire the analysis information after a delay from the acquisition of the electrocardiogram waveform. For example, the diagnostic information and measurement information included in the analysis information do not change significantly in a short time. Therefore, even if the acquisition of the analysis information is delayed, it is possible to set the examination conditions according to the analysis information.

[0111] The above-described embodiment can be modified as appropriate by changing a part of the configuration or function of the X-ray CT device 1. Therefore, some modified examples of the above-described embodiment will be described below as other embodiments. The following mainly describes the differences from the above-described embodiment, and a detailed description of the commonalities with the contents already described will be omitted. The modified examples described below may be implemented individually or in appropriate combination.

[0112] (Variation 1) In the above embodiment, a description has been given of a configuration in which the X-ray CT apparatus 1 acquires diagnostic information and measurement information from the electrocardiograph 40. In this modification, a description will be given of a configuration in which the X-ray CT apparatus 1 itself acquires diagnostic information and measurement information by analyzing an electrocardiogram waveform.

[0113] The second acquisition function 37d according to this modification obtains analysis information based on the electrocardiogram waveform obtained by the first acquisition function 37c. For example, the second acquisition function 37d obtains diagnostic information and measurement information by analyzing the electrocardiogram waveform obtained by the first acquisition function 37c. The second acquisition function 37d may obtain either the diagnostic information or the measurement information. There is no particular limitation on the means for analyzing the electrocardiogram waveform, and various known analysis techniques can be adopted.

[0114] In this modification, the electrocardiograph 40 does not perform analysis processing of an electrocardiogram waveform, and therefore, according to this modification, the electrocardiograph 40 can have a simple configuration.

[0115] (Variation 2) In the above-mentioned modified example, the X-ray CT apparatus 1 analyzes the electrocardiogram waveform. In the present modified example, a configuration in which analysis information is obtained from an external device will be described.

[0116] The second acquisition function 37d according to this modification acquires analysis information from an external device. For example, the second acquisition function 37d acquires diagnostic information and measurement information obtained in the most recently performed electrocardiogram test from a server device such as an electronic medical record server. As an example, when an instruction to acquire diagnostic information and measurement information is received from an operator via the input circuit 31 of the console 30, the second acquisition function 37d acquires diagnostic information and measurement information obtained in the most recently performed electrocardiogram test.

[0117] The second acquisition function 37d may acquire the analysis information etc. that is directly input via the console 30. For example, the second acquisition function 37d may acquire the analysis information by reading the analysis information recorded on a computer-readable recording medium such as a flexible disk (FD), CD-ROM, MO, DVD, etc., with a recording medium reader (not shown) connected to the console 30.

[0118] In this modification, the second acquisition function 37d of the X-ray CT apparatus 1 does not perform analysis processing. Therefore, according to this modification, the processing load on the processing circuitry 37 of the X-ray CT apparatus 1 can be reduced.

[0119] (Variation 3) In the above-described embodiment and modified example, the biological monitor is an electrocardiograph. However, the biological monitor is not limited to an electrocardiograph. The biological monitor may be, for example, a respiration detection device 50.

[0120] 8 is a block diagram showing an example of the configuration of an X-ray CT apparatus according to Modification 3. In this modification, the X-ray CT apparatus 1 is connected to a respiration detection device 50.

[0121] The breathing detection device 50 has a breathing sensor and acquires a breathing waveform of the subject P. For example, the breathing sensor has a laser generator and a light receiver. The breathing sensor processes a signal of reflected light from the abdominal surface of the subject P, and repeatedly calculates the distance between the laser generator and the abdominal surface of the subject in real time based on the time from laser irradiation to reception of the reflected light or the phase change of the reflected light signal.

[0122] In this modification, the breathing detection device 50 is described as having a breathing sensor with a laser generator and a light receiver, but the breathing detection device 50 is not limited to this. For example, the breathing detection device 50 may be configured to attach a pressure sensor between a band worn on the abdomen of the subject P and the abdomen, and observe the breathing state based on changes in pressure. Also, for example, the breathing detection device 50 may be configured to place an object with a light reflecting material on the abdomen, photograph the object with a camera, and observe the breathing state by tracking the movement of the light reflecting material.

[0123] The respiratory waveform acquired by the respiratory detection device 50 is transmitted to the console 30. The respiratory waveform transmitted to the console 30 is stored in the memory circuit 35. In other words, the memory circuit 35 stores the respiratory waveform. Note that the period of one cycle of the respiratory waveform is standardized as 0 to 100%, and each position in this period is expressed as a percentage, which is called the respiratory phase. For example, in the respiratory phase, the period from the maximum inspiration to the next maximum inspiration is standardized as 0 to 100%.

[0124] In addition, the respiration detection device 50 transmits analysis information obtained by analyzing the respiration waveform acquired from the subject P to the console 30. The console 30 stores the analysis information received from the electrocardiograph 40 in the memory circuitry .

[0125] The scan control circuit 33 of this modified example, under the control of the system control function 37a of the processing circuitry 37, executes a respiratory-gated scan in which a scan is performed during the period of maximum inspiration, which is the peak of the respiratory waveform, or maximum expiration, which is the bottom of the respiratory waveform.

[0126] The first acquisition function 37c of the processing circuit 37 according to this modification acquires the respiratory waveform of the subject P collected by the respiratory detection device 50. For example, the first acquisition function 37c acquires the respiratory waveform of the subject P transmitted from the respiratory detection device 50 to the console 30 in real time.

[0127] The second acquisition function 37d acquires analysis information obtained by analyzing the respiratory waveform of the subject P. For example, the second acquisition function 37d acquires measurement information such as a respiratory cycle transmitted from the breathing detection device 50 to the console 30.

[0128] The setting function 37e sets the test conditions based on the respiratory waveform acquired by the first acquisition function 37c and the measurement information acquired by the second acquisition function 37d.

[0129] Although not shown, in this modification, the examination condition DB 351 of the storage circuitry 35 stores a respiratory cycle, a time from the start of injection of a contrast agent to the start of a scan (delay time), a scan time, and a reconstruction timing in association with each other. The delay time and the scan time are examples of imaging conditions.

[0130] For example, the delay time and the scan time are associated with the respiratory cycle so that imaging is started and ended at appropriate timings in the end-expiration phase when the movement of the subject P is small. Also, for example, the reconstruction timing is associated with the respiratory cycle so that reconstruction is performed in an appropriate period of the end-expiration phase when the movement of the subject P is small.

[0131] For example, the setting function 37e refers to the examination condition DB 351 and specifies the delay time and scan time corresponding to the respiratory cycle acquired by the second acquisition function 37d. The setting function 37e also sets the imaging conditions according to the specified delay time and scan time. The setting function 37e also refers to the examination condition DB 351 and sets the reconstruction timing corresponding to the respiratory cycle acquired by the second acquisition function 37d.

[0132] In this modification, only the respiration detection device 50 is connected to the X-ray CT device 1, but other biological monitors such as the electrocardiograph 40 may be connected together with the respiration detection device 50.

[0133] According to this modification, the examination conditions of the X-ray CT apparatus 1 can be set based on analysis information obtained by analyzing biological information obtained from various biological monitors.

[0134] (Variation 4) In the above-described embodiment and modified example, the imaging diagnostic apparatus is an X-ray CT apparatus 1. However, the imaging diagnostic apparatus is not limited to the X-ray CT apparatus 1. For example, the imaging diagnostic apparatus may be an X-ray diagnostic apparatus for circulatory system (X-ray angiography apparatus) or a magnetic resonance imaging (MRI) apparatus.

[0135] For example, when the image diagnostic apparatus is an MRI apparatus, imaging conditions for electrocardiogram-gated imaging, in which MRI signals are acquired in synchronization with an electrocardiogram waveform, are set based on analysis information of an electrocardiogram waveform.

[0136] According to this modification, it is possible to easily set appropriate examination conditions according to the analysis information of the biological monitor for examinations using various image diagnostic apparatuses.

[0137] The term "processor" used in the above description refers to circuits such as a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), or an Application Specific Integrated Circuit (ASIC), a programmable logic device (e.g., a Simple Programmable Logic Device (SPLD), a Complex Programmable Logic Device (CPLD), and a Field Programmable Gate Array (FPGA)).

[0138] The processor realizes its functions by reading and executing the program stored in the memory circuit. Note that instead of storing the program in the memory circuit, the program may be directly built into the processor circuit. In this case, the processor realizes its functions by reading and executing the program built into the circuit.

[0139] In addition, each processor in this embodiment is not limited to being configured as a single circuit, but may be configured as a single processor by combining multiple independent circuits to realize its functions. Furthermore, multiple components in FIG. 1 may be integrated into a single processor to realize its functions.

[0140] In addition, each component of each device illustrated in the above-mentioned embodiment is a functional concept, and does not necessarily have to be physically configured as illustrated. In other words, the specific form of distribution and integration of each device is not limited to that illustrated, and all or part of them can be functionally or physically distributed and integrated in any unit according to various loads, usage conditions, etc.

[0141] Furthermore, each processing function performed by each device may be realized, in whole or in part, by a CPU and a program analyzed and executed by the CPU, or may be realized as hardware using wired logic.

[0142] The control method described in the above embodiment can be realized by executing a prepared control program on a computer such as a personal computer or a workstation. This control program can be distributed via a network such as the Internet.

[0143] In addition, this control program can be recorded on a computer-readable recording medium such as a hard disk, a FD, a CD-ROM, an MO, or a DVD, and executed by the computer by reading it from the recording medium.

[0144] As described above, according to at least one of the embodiments, it is possible to easily set appropriate test conditions according to analysis information from a biological monitor.

[0145] Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope of the invention and its equivalents described in the claims, as well as in the scope and spirit of the invention. [Explanation of symbols]

[0146] 1 X-ray CT device 33 Scan control circuit 36 Image reconstruction circuit 37 Processing circuit 37a System Control Functions 37b Display control function 37c 1st acquisition function 37d 2nd acquisition function 37e Setting Function

Claims

1. a first acquisition unit that acquires biological information related to the subject collected by the biological monitor; A second acquisition unit that acquires analysis information obtained by analyzing the biological information; a setting unit that sets an examination condition for photographing the subject and obtaining an image based on the biological information and the analysis information; A medical image diagnostic apparatus comprising:

2. the second acquisition unit acquires the analysis information with a delay from the acquisition of the biological information by the first acquisition unit. The medical image diagnostic apparatus according to claim 1 .

3. The analysis information includes at least one of diagnostic information indicating a pathological condition of the subject and measurement information indicating a characteristic of the biological information. The medical image diagnostic apparatus according to claim 1 .

4. the biological monitor is an electrocardiograph; The diagnostic information includes electrocardiogram findings of the subject. The medical image diagnostic apparatus according to claim 3 .

5. The electrocardiogram findings include at least one of atrioventricular block, PQ shortening, pacemaker activation, ventricular premature contraction, bigeminy, and atrial fibrillation; The medical image diagnostic apparatus according to claim 4.

6. The measurement information includes at least one of a PR interval, a PQ interval, an RR interval, a heart rate change, and a frequency of arrhythmia. The medical image diagnostic apparatus according to claim 3 .

7. The inspection conditions include at least one of an imaging condition and a reconstruction condition.

7. A medical image diagnostic apparatus according to claim 1.

8. The inspection conditions include the imaging conditions, The imaging conditions include imaging timing indicating a time condition for imaging the subject, and a condition for operating each part of the apparatus in order to image the subject at the imaging timing. The medical image diagnostic apparatus according to claim 7.

9. the inspection condition includes the reconstruction condition, The reconstruction conditions include a reconstruction timing that represents a time condition for executing a reconstruction process of medical image data obtained by imaging a subject. The medical image diagnostic apparatus according to claim 7.

10. A stand for rotating and moving the X-ray tube; a bed having a top plate on which a subject is placed; a first acquisition unit that acquires biological information related to the subject collected by a biological monitor; A second acquisition unit that acquires analysis information obtained by analyzing the biological information; a setting unit that sets an examination condition for photographing the subject and obtaining an image based on the biological information and the analysis information; a control unit that controls the operation of the gantry and the bed based on the set examination conditions to control the irradiation of X-rays to the subject; An X-ray CT apparatus comprising:

11. A medical image diagnostic system including a biological monitor and a medical image diagnostic device, The biological monitor includes: A collection unit that collects biological information about a subject; an output unit that outputs the collected biological information; Equipped with The medical image diagnostic apparatus includes: a first acquisition unit that acquires the biological information from the biological monitor; A second acquisition unit that acquires analysis information obtained by analyzing the biological information; a setting unit that sets an examination condition for photographing the subject and obtaining an image based on the biological information and the analysis information; A medical image diagnostic system comprising:

Images