JP2023028952A - Medical image processing device, medical image processing method and program - Google Patents

Abstract

To reduce time and effort required for adjusting a display condition of a cross-sectional image.SOLUTION: A medical image processing device includes an adjustment part and a display control part. The adjustment part adjusts a display condition of a cross-sectional image to a detection result by a detector on the basis of input information that is input by an operator. The display control part controls a display part to display an image by visualizing the display condition of a plurality of cross-sections when adjusting the display condition.SELECTED DRAWING: Figure 1

Description

The embodiments disclosed in this specification and drawings relate to a medical image processing apparatus, a medical image processing method, and a program.

Medical image processing apparatuses, such as X-ray CT apparatuses, can obtain cross-sectional images of a wide range of the human body at once by means of helical scanning or the like due to improvements in imaging speed, reorganization speed, and image resolution. The number of images thus obtained is enormous. These images are, for example, transferred to a server after being adjusted in brightness, or subjected to processing such as capture and filming.

A large number of photographed cross-sectional images are generated with uniform brightness set at the time of photographing. However, the set brightness may not be the optimum brightness depending on the body shape and disease state of the subject and set imaging conditions (scanning conditions). Furthermore, the optimal brightness may differ in regions such as shoulders and other regions with many bones and in regions such as the brain as compared to other regions. For this reason, while viewing each cross-sectional image, the luminance is adjusted to be suitable for diagnosis so that the image is more suitable for diagnosis, but the amount of adjustment may increase.

JP 2016-156895 A WO2013/011800 JP 2018-185695 A JP-A-2003-116838

The problem to be solved by the embodiments disclosed in this specification and drawings is to reduce the effort required to adjust the display conditions of cross-sectional images. However, the problems to be solved by the embodiments disclosed in this specification and drawings are not limited to the above problems. A problem corresponding to each effect of each configuration shown in the embodiments described later can be positioned as another problem.

A medical image processing apparatus according to an embodiment has an adjustment unit and a display control unit. The adjuster adjusts the display conditions when displaying the cross-sectional image generated from the original image based on the detection result of the detector, based on the input information input by the operator. The display control unit visualizes the display conditions of the plurality of cross sections and displays them on the display unit when adjusting the display conditions.

1 is a configuration diagram of an X-ray CT apparatus 1 according to an embodiment; FIG. 4 is a flow chart showing an example of the flow from the operator causing the X-ray CT apparatus 1 to capture a CT image of the subject P to outputting the CT image. 4 is a flowchart showing an example of processing in the X-ray CT apparatus 1; FIG. 4 is a diagram showing an example of a brightness adjustment image; The figure which shows an example of the brightness adjustment image containing brightness curve image GA40. FIG. 10 is a diagram showing an example of a brightness adjustment image when setting a change target representative image GA20 and the like; FIG. 11 shows an example of a brightness adjustment image including an adjusted window width curve GA42; FIG. 10 is a diagram showing an example of a brightness adjustment image including a window width curve GA42 in which the brightness of an interpolation target image group is interpolated; The figure which shows an example of the brightness adjustment image containing window width curve GA42 deform|transformed by handwriting operation. The figure which shows an example of the brightness adjustment image containing brightness curve image GA50. FIG. 4 is a diagram showing an example of a brightness adjustment image in which cross-sectional images are divided into a plurality of groups;

A medical image processing apparatus, a medical image processing method, and a program according to embodiments will be described below with reference to the drawings.

FIG. 1 is a configuration diagram of an X-ray CT apparatus 1 according to an embodiment. The X-ray CT apparatus 1 has, for example, a gantry device 10, a bed device 30, and a console device 40. For convenience of explanation, FIG. 1 shows both a view of the gantry device 10 viewed from the Z-axis direction and a view of the gantry device 10 viewed from the X-axis direction. In the embodiment, the rotation axis of the rotating frame 17 in the non-tilt state or the longitudinal direction of the top plate 33 of the bed device 30 is the Z-axis direction, and the axis perpendicular to the Z-axis direction and horizontal to the floor surface is the X-axis. A direction perpendicular to the Z-axis direction and perpendicular to the floor surface is defined as a Y-axis direction. The X-ray CT apparatus 1 is an example of a medical image processing apparatus.

The gantry device 10 includes, for example, an X-ray tube 11, a wedge 12, a collimator 13, an X-ray high voltage device 14, an X-ray detector 15, and a data acquisition system (DAS: Data Acquisition System) 16. , a rotating frame 17 and a control device 18 .

The X-ray tube 11 generates X-rays by applying a high voltage from the X-ray high voltage device 14 and irradiating thermal electrons from a cathode (filament) toward an anode (target). X-ray tube 11 includes a vacuum tube. For example, the X-ray tube 11 is a rotating anode type X-ray tube that generates X-rays by irradiating a rotating anode with thermal electrons.

The wedge 12 is a filter for adjusting the dose of X-rays irradiated from the X-ray tube 11 to the subject P, which is the target of image diagnosis. The wedge 12 attenuates the X-rays passing through itself so that the X-ray dose distribution irradiated from the X-ray tube 11 to the subject P becomes a predetermined distribution. The wedge 12 is also called a wedge filter or a bow-tie filter. The wedge 12 is, for example, processed aluminum so as to have a predetermined target angle and a predetermined thickness.

The collimator 13 is a mechanism for narrowing down the irradiation range of X-rays transmitted through the wedge 12 . The collimator 13 narrows down the X-ray irradiation range by, for example, forming a slit by combining a plurality of lead plates. The collimator 13 is sometimes called an X-ray diaphragm. The narrowing range of the collimator 13 may be mechanically drivable.

The X-ray high voltage device 14 has, for example, a high voltage generator and an X-ray controller. The high voltage generator has an electric circuit including a transformer, a rectifier, etc., and generates a high voltage to be applied to the X-ray tube 11 . The X-ray controller controls the output voltage of the high voltage generator in accordance with the amount of X-rays to be generated by the X-ray tube 11 . The high voltage generator may be one that boosts the voltage with the transformer described above, or one that boosts the voltage with an inverter. The X-ray high voltage device 14 may be provided on the rotating frame 17 or may be provided on the fixed frame (not shown) side of the gantry device 10 .

The X-ray detector 15 detects the intensity of X-rays generated by the X-ray tube 11 and incident through the subject P. FIG. The X-ray detector 15 outputs to the DAS 16 an electrical signal (which may be an optical signal or the like) corresponding to the intensity of the detected X-rays. The X-ray detector 15 has, for example, multiple X-ray detection element arrays. Each of the plurality of X-ray detection element arrays has a plurality of X-ray detection elements arranged in the channel direction along an arc centered on the focal point of the X-ray tube 11 . A plurality of X-ray detection element arrays are arranged in a slice direction (column direction, row direction).

X-ray detector 15 is, for example, an indirect detector having a grid, a scintillator array, and a photosensor array. The scintillator array has a plurality of scintillators. Each scintillator has a scintillator crystal. The scintillator crystal emits an amount of light corresponding to the intensity of incident X-rays. The grid has an X-ray shielding plate arranged on the surface of the scintillator array on which X-rays are incident and having a function of absorbing scattered X-rays. Note that the grid may also be called a collimator (one-dimensional collimator or two-dimensional collimator). The photosensor array has photosensors such as, for example, photomultiplier tubes (photomultipliers: PMTs). The photosensor array outputs an electrical signal corresponding to the amount of light emitted by the scintillator. The X-ray detector 15 may be a direct conversion detector having a semiconductor element that converts incident X-rays into electrical signals. X-ray detector 15 is an example of a detector.

DAS 16 has, for example, an amplifier, an integrator, and an A/D converter. The amplifier amplifies the electrical signal output from each X-ray detection element of the X-ray detector 15 . The integrator integrates the amplified electrical signal over the view period. The A/D converter converts an electrical signal representing the result of integration into a digital signal. The DAS 16 outputs detection data based on digital signals to the console device 40 .

Rotating frame 17 supports X-ray tube 11 , wedge 12 , collimator 13 , and X-ray detector 15 so as to face each other. The rotating frame 17 is an annular member having circular side surfaces with a circular opening formed in the center, an inner side surface connecting the inner circles of the both side surfaces, and an outer side surface connecting the outer circles of the both side surfaces. is. Both sides of the rotating frame 17 are flat, and the inner and outer sides are curved.

The rotating frame 17 is an annular member that supports the X-ray tube 11, the wedge 12, the collimator 13, and the X-ray detector 15 so as to face each other. The rotary frame 17 is supported by a fixed frame (not shown) so as to be rotatable around the subject P introduced therein. Rotating frame 17 also supports DAS 16 . Detection data output by the DAS 16 is transmitted by optical communication from a transmitter having a light emitting diode (LED) mounted on the rotating frame 17 to a photodiode mounted on a non-rotating portion (e.g., fixed frame) of the gantry 10. It is transmitted to the receiver and transferred to the console device 40 by the receiver. The method of transmitting the detection data from the rotating frame 17 to the non-rotating portion is not limited to the above-described method using optical communication, and any non-contact transmission method may be employed. The rotating frame 17 is not limited to an annular member, and may be a member such as an arm as long as it can support and rotate the X-ray tube 11 or the like.

The X-ray CT apparatus 1 is, for example, a Rotate/Rotate-type X-ray CT apparatus (third Generation CT), but not limited to this, Stationary/Rotate-Type in which a plurality of annularly arranged X-ray detection elements are fixed to a fixed frame, and the X-ray tube 11 rotates around the subject P. It may be an X-ray CT device (fourth generation CT).

The control device 18 has, for example, a processing circuit having a processor such as a CPU (Central Processing Unit), and a driving mechanism including a motor, an actuator, and the like. The processing circuit implements these functions by, for example, a hardware processor executing a program stored in a storage device (storage circuit).

A hardware processor includes, for example, a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), an application specific integrated circuit (ASIC), a programmable logic device (for example, a simple programmable logic device (Simple Programmable Logic Device (SPLD) or Complex Programmable Logic Device (CPLD), Field Programmable Gate Array (FPGA), etc. Instead of storing programs in memory, The program may be configured to be directly embedded in the circuit of the hardware processor.In this case, the hardware processor realizes the function by reading and executing the program embedded in the circuit.The hardware processor: It is not limited to being configured as a single circuit, and a plurality of independent circuits may be combined to be configured as one hardware processor to realize each function. A hardware storage medium may be used, or a plurality of components may be integrated into a single hardware processor to achieve each function.

For example, the control device 18 rotates the rotating frame 17 , tilts the gantry of the gantry device 10 , moves the top board 33 of the bed device 30 by up-and-down movement, and emits X-rays from the X-ray tube 11 . Radiation (exposure). The control device 18 may be provided in the gantry device 10 or may be provided in the console device 40 .

The bed device 30 is a device on which a subject P to be scanned is placed and moved, and introduced into the rotating frame 17 of the gantry device 10 . The bed device 30 includes, for example, a base 31 , a bed lifting device 32 , a top plate 33 , and a support frame 34 . The base 31 includes a housing that supports the support frame 34 so as to be movable in the vertical direction (Y-axis direction).

The console device 40 has, for example, a memory 41 , a display 42 , an input interface 43 and a processing circuit 50 . In the embodiment, the console device 40 is described as being separate from the gantry device 10 , but the gantry device 10 may include some or all of the components of the console device 40 .

The memory 41 is implemented by, for example, a RAM (Random Access Memory), a semiconductor memory device such as a flash memory, a hard disk, an optical disk, or the like. The memory 41 stores, for example, detection data, projection data, reconstructed image data, CT image data, and the like. These data may be stored in an external memory with which the X-ray CT apparatus 1 can communicate, instead of the memory 41 (or in addition to the memory 41). The external memory is controlled by the cloud server, for example, when the cloud server that manages the external memory receives a read/write request.

The display 42 displays various information. For example, the display 42 displays a medical image (CT image) generated by the processing circuit 50, a GUI (Graphical User Interface) image for receiving various operations by an operator such as a doctor or a technician, and the like. The display 42 is, for example, a liquid crystal display, a CRT (Cathode Ray Tube), an organic EL (Electroluminescence) display, or the like. The display 42 may be provided on the gantry device 10 . The display 42 may be of a desktop type, or may be a display device capable of wireless communication with the main body of the console device 40 (for example, a tablet terminal). The display 42 is an example of a display section.

The input interface 43 accepts various input operations by the operator and outputs an electrical signal indicating the content of the accepted input operation to the processing circuit 50 . For example, the input interface 43 is used for input operations such as acquisition conditions for acquiring detection data or projection data, reconstruction conditions for reconstructing CT images, and image processing conditions for generating post-processed images from CT images. accept.

The input interface 43 is implemented by, for example, a mouse, keyboard, touch panel, drag ball, switch, button, joystick, dial, camera, infrared sensor, microphone, and the like. The input interface 43 may be implemented by a display device (for example, a tablet terminal) capable of wireless communication with the main body of the console device 40 .

The input interface 43 also receives an input operation of the subject P such as the name and weight (body weight) of the subject P when the contrast-enhanced CT image of the subject P is captured. The input interface 43 receives an input operation of input information for adjusting the window level and window width when setting the window level and window width. The input interface 43 is an example of an input section. In the following description, adjustment of window level and window width may be referred to as brightness adjustment. Input operations for brightness adjustment will be further described later.

It should be noted that the input interface in this specification is not limited to those having physical operation components such as a mouse and keyboard. For example, the input interface includes an electrical signal processing circuit that receives an electrical signal corresponding to an input operation from an external input device provided separately from the device and outputs the electrical signal to the control circuit.

A processing circuit 50 controls the overall operation of the X-ray CT apparatus 1 . The processing circuit 50 includes, for example, a control function 51 , a preprocessing function 52 , a reconstruction processing function 53 , an image processing function 54 , an adjustment function 55 , a setting function 56 and a display control function 57 . The processing circuit 50 implements these functions by, for example, a hardware processor executing a program stored in a storage device (storage circuit).

Hardware processors refer to circuits such as, for example, CPUs, GPUs, application specific integrated circuits, programmable or mixed programmable logic devices, field programmable gate arrays, and the like. Instead of storing the program in the storage device, the program may be configured to be directly embedded in the circuitry of the hardware processor. The hardware processor is not limited to being configured as a single circuit, and may be configured as one hardware processor by combining a plurality of independent circuits to implement each function. The storage device may be a non-transitory (hardware) storage medium. Also, a plurality of components may be integrated into one hardware processor to realize each function.

Each component of the console device 40 or the processing circuit 50 may be distributed and realized by a plurality of pieces of hardware. The processing circuit 50 may be realized by a processing device that can communicate with the console device 40 instead of the configuration that the console device 40 has. The processing device is, for example, a workstation connected to one X-ray CT apparatus, or a device ( cloud server). Each function included in the processing circuit 50 may be distributed over a plurality of circuits, or may be made available by activating application software stored in the memory 41 .

The control function 51 controls various functions of the processing circuit 50 based on input operations received by the input interface 43 . For example, the control function 51 controls the X-ray high-voltage device 14 , the DAS 16 , the control device 18 and the bed raising/lowering device 32 to perform detection data collection processing and the like in the gantry device 10 .

The preprocessing function 52 performs preprocessing such as logarithmic conversion processing, offset correction processing, inter-channel sensitivity correction processing, and beam hardening correction on the detection data output from the DAS 16 to generate projection data. The projection data are stored in memory 41 .

A reconstruction processing function 53 performs reconstruction processing using a filtered back projection method, an iterative reconstruction method, or the like on the projection data generated by the preprocessing function 52 to generate CT image data. The CT image data are stored in the memory 41 . A CT image is an image based on the detection result of the X-ray detector 15 . A CT image is an example of an original image.

The image processing function 54 converts the CT image data into three-dimensional image data or cross-sectional image data of an arbitrary cross-section by a known method based on the input operation received by the input interface 43 . The conversion to three-dimensional image data may be performed by preprocessing function 52 . The image processing function 54 generates, for example, multiple cross-sectional images corresponding to multiple cross-sections in the CT image generated by the reconstruction processing function 53 .

The adjustment function 55 adjusts display conditions when displaying cross-sectional images based on input information input to the input interface 43 by the operator. The adjustment function 55 sets the window level and window width for displaying a plurality of cross-sectional images generated from the original image based on the detection result of the detector to the CT image.

The adjustment function 55 first sets a graph (hereinafter referred to as a brightness curve) showing the window level and window width based on the preset initial settings or the operator's selection operation received by the input interface 43 . The adjusting function 55 adjusts the brightness of the image displayed on the display 42 based on the set brightness curve.

A luminance curve is a curve obtained by visualizing window levels and window widths of a plurality of sections, and is a curve determined according to the window level and window width. Window level and window width are examples of display conditions. Display conditions may be other than window level and window width. The display condition may be, for example, one of window level and window width, color, transparency, and the like. The adjustment function 55 is an example of an adjustment unit.

The adjustment function 55 adjusts the window level and the window width based on the input information by the input operation received by the input interface 43 and received by the input interface 43 . When the window level and window width are adjusted, the adjusting function 55 generates a new brightness curve according to the adjusted window level and window width.

The setting function 56 changes the brightness curve set for the CT image to a brightness curve corresponding to the window level and window width adjusted by the adjustment function 55 and sets the brightness curve. The setting function 56 is an example of a setting section. The adjustment function 55 stores the generated brightness curve in the memory 41 . The memory 41 is an example of a storage unit. Memory 41 stores a plurality of brightness curves generated by adjustment function 55 .

The memory 41 stores a plurality of brightness curves stored by the setting function 56 . The adjustment function 55 sets a brightness curve obtained from among a plurality of brightness curves stored in the memory 41 when setting the brightness curve. Memory 41 may also store brightness curves other than those stored by setting function 56, such as brightness curves provided by a workstation.

The display control function 57 causes the display 42 to display the three-dimensional image data, cross-sectional image data, etc. converted by the image processing function 54 . The cross-sectional image displayed on the display 42 is an image whose window level and window width have been adjusted, and is, for example, an image used for diagnosis by a doctor or the like (hereinafter referred to as a diagnostic image). The cross-sectional image is a two-dimensional cross-sectional image reconstructed from CT imaging data by the reconstruction processing function 53 .

The display control function 57 outputs a luminance adjustment image and causes the display 42 to display it when the adjustment function 55 adjusts the cross-sectional image. The brightness adjustment image includes a reference image, a change target image, and a change target image group including a plurality of sample images that are samples of the change target image. The luminance adjustment image will be further described later. The display control function 57 is an example of a display control section. The display control function 57 is an example of an output section.

Next, the operation of the X-ray CT apparatus 1 of the embodiment will be described. First, processing by the operator will be described, and then processing in the X-ray CT apparatus 1 will be described. In the processing by the operator, the flow from the operator causing the X-ray CT apparatus 1 to capture a CT image of the subject P to outputting the CT image will be described.

(Processing by operator)
FIG. 2 is a flowchart showing an example of the flow from the operator causing the X-ray CT apparatus 1 to capture a CT image of the subject P to outputting the CT image. When imaging a CT image of the subject P, first, the operator selects an imaging protocol for imaging the subject P with the X-ray CT apparatus 1 (step S101). The operator selects an imaging protocol based on various conditions such as the physique of a subject whose CT image is to be imaged, the site to be examined, the presence or absence of a contrast medium, and operates the input interface 43 according to the selected imaging protocol. . The X-ray CT apparatus 1 sets an imaging protocol for imaging a CT image based on the operator's operation of the input interface 43 .

After the X-ray CT apparatus 1 sets the imaging protocol, the operator selects the applied brightness (window level and window width) (step S103). The operator selects the applied brightness based on various conditions such as the physique of the subject whose CT image is to be taken, the site to be examined, the presence or absence of a contrast medium, and operates the input interface 43 according to the selected applied brightness. . The X-ray CT apparatus 1 sets the applied brightness based on the operation of the input interface 43 by the operator. When the operator does not input the applied brightness, the X-ray CT apparatus 1 sets the initially set values of the window level and the window width prepared in advance as the applied brightness, for example.

Subsequently, the operator operates the input interface 43 to cause the X-ray CT apparatus 1 to image the subject P (step S105). The operator causes the reconstruction processing function 53 of the X-ray CT apparatus 1 to acquire the original CT image.

Subsequently, the operator operates the input interface 43 to cause the display control function 57 of the X-ray CT apparatus 1 to display the original image on the display 42 (step S107). Here, the window level and window width in the cross-sectional image displayed on the display 42 are the applied brightness selected in step S103.

Subsequently, the operator operates the input interface 43 to cause the adjusting function 55 of the X-ray CT apparatus 1 to adjust the brightness of the cross-sectional image (step S109). When adjusting the brightness of the cross-sectional image using the adjustment function 55 , the X-ray CT apparatus 1 causes the display control function 57 to display the brightness window level and window width together with the cross-sectional image on the display 42 . The brightness adjustment of the cross-sectional image will be further described in the process of the X-ray CT apparatus 1. FIG.

Subsequently, the operator visually recognizes the cross-sectional image displayed on the display 42 and confirms the luminance (window level and window width) of the cross-sectional image (step S111). After confirming the luminance, the operator operates the input interface 43 to cause the X-ray CT apparatus 1 to store the luminance confirmed in step S111 in the memory 41 (step S113). Up to this point, the X-ray CT apparatus 1 automatically executes the process of adjusting the brightness of the cross-sectional image, checking the brightness of the cross-sectional image, and storing it in the memory 41 .

Subsequently, the operator instructs the X-ray CT apparatus 1 to transfer the brightness confirmed in step S111 to a device other than the X-ray CT apparatus 1, such as a workstation, or to print it using a printer (not shown). An output operation is performed (step S115). When an output operation is performed by the operator, the X-ray CT apparatus 1 automatically sets the window level and the window width for the CT image by the setting function 56 without depending on the operator's operation, and stores them in the memory 41. Store and save (step S117).

The X-ray CT apparatus 1 may automatically store the CT image associated with the window level and window width. After that, the operator causes the X-ray CT apparatus 1 to display the cross-sectional image with the adjusted brightness on the display 42 using the display control function 57 (step S119). In this way, a series of processes by the operator shown in FIG. 2 are completed.

(Processing in X-ray CT apparatus 1)
Next, processing in the X-ray CT apparatus 1 will be described. FIG. 3 is a flowchart showing an example of processing in the X-ray CT apparatus 1. As shown in FIG. In the display control function 57, the X-ray CT apparatus 1 causes the display 42 to display a brightness adjustment image including an image to be changed and a brightness curve in order to set the brightness of the diagnostic image (step S201). The brightness curve displayed at this time is, for example, the brightness curve initially set as the applied brightness. Brightness adjustment is done by adjusting the window level and window width.

Here, the brightness adjustment image will be described. FIG. 4 is a diagram showing an example of a brightness adjustment image displayed on the display 42. As shown in FIG. FIG. 5 is a diagram showing an example of a brightness adjustment image including a brightness curve image GA40. The brightness adjustment images displayed on the display 42 include, for example, a reference image GA10, a change target representative image GA20, a change target image group GA30, and a brightness curve image GA40. In the example shown in FIG. 5, the change target image group GA30 includes 12 sample images of 3 rows and 4 columns, but the number of sample images included in the change target image group GA30 may be more than 12. may be less or may be changeable. Also, the arrangement (frame division) of the sample images included in the change target image group GA30 may be an arrangement other than 3 rows and 4 columns, and may be changed as appropriate.

The reference image GA10 is, for example, a scanogram of the head of the subject P based on electrical signals detected by the X-ray detector 15 . The reference image GA10 may be an image other than the scanogram. The reference image GA10 may be, for example, an MPR (multi planar reconstruction) image, a MIP (maximum intensity projection) image, a shaded volume rendering (SVR) image, or the like.

A cross-sectional line GA11 is superimposed on the reference image GA10. A cross-sectional line GA11 indicates a cross-section in which the CT image displayed as the representative image GA20 to be changed was taken. The section line GA11 receives an operator's operation. Although the cross-sectional line GA11 is a straight line, it may be a curved line or the like other than the straight line depending on the form and direction of the reference image. For example, if the reference image GA10 is an oblique image or a fly-through image, the cross-sectional line GA11 may be a point, a curve, or the like.

The change target representative image GA20 is an image displayed as a sample when adjusting the window level and window width of the cross-sectional image. The change target representative image GA20 is an image selected as a sample when adjusting the brightness of the diagnostic image from among the plurality of change target images. The image to be changed is, for example, a CT cross-sectional image obtained by imaging the subject P. FIG. The change target representative image GA20 is displayed with brightness corresponding to the set window level and window width. The representative image GA20 to be changed may be an image other than the CT image. The change target representative image GA20 may be, for example, an MPR image, an MIP image, a shaded volume rendering image, or a scanogram.

The change target image group GA30 is obtained by arranging and displaying a plurality of change target images as samples. The change target image group GA30 is displayed with brightness according to the window level and window width set by the setting function 56 . The change target image group GA30 is a GUI image that receives an operator's operation. Some or all of the change target image group GA30 are change target images for which brightness adjustment is performed from the cross-sectional image. The change target representative image GA20 is selected from among images represented as sample images included in the change target image group GA30.

Next, the brightness curve will be explained. When the operator performs brightness adjustment using the adjustment function 55, the display control function 57, as shown in FIG. , and displayed on the display 42. The display control function 57 also causes the window level/window width value image GA21 to be displayed on the change target representative image GA20. The window level/window width value image GA21 may also be displayed on each image in the change target image group GA30.

Brightness curve image GA40 includes window level curve GA41, window width curve GA42, window level value GA43, and window width value GA44. The window level curve GA41 is generated by connecting values indicating the window level of the CT image, and is a curve that extends vertically within the display 42. FIG. The display control function 57 causes the display 42 to display the window level curve GA41 and the window width curve GA42 independently of each other.

The window width curve GA42 is generated by connecting values indicating the window width of the CT image, and is also a curve that extends vertically within the display 42. FIG. Both the window level curve GA41 and the window width curve GA42 may be straight lines with zero curvature. Both the window level curve GA41 and the window width curve GA42 are GUIs that accept operator's operations, and can be adjusted by the operator's operations.

The window level value GA43 is displayed along the lower edge of the change target representative image GA20, for example, as shown in FIG. Is displayed. The window level value GA43 and the window width value GA44 can be displayed on different scales. The display range of the window level value GA43 and the window width value GA44 can be appropriately changed based on the operation of the input interface 43 by the operator.

The operator can select a brightness curve suitable for displaying the change target representative image GA20 from among the plurality of brightness curves stored in the memory 41 . When the operator selects a brightness curve, the operator operates the input interface 43 according to the selection of the brightness curve. The input interface 43 outputs an electric signal to the X-ray CT apparatus 1 according to the operator's operation. The brightness curve may be drawn with values obtained from the window level and window width of the target image group, or may be automatically selected and set by the X-ray CT apparatus 1 .

The selected brightness curve may be expanded or contracted by a user's operation, or may be automatically adjusted by the X-ray CT apparatus 1, according to a range to be observed, such as the physique of the subject P or hypertrophy due to a disease. good. The selected luminance curve may be moved while the shape is fixed, or may be collectively set to be darker overall, wider, etc., by user operation.

Returning to the description of FIG. 3 , after the display control function 57 causes the display 42 to display the brightness adjustment image and the brightness curve, the adjustment function 55 allows the operator to adjust the brightness curve based on the electrical signal output by the input interface 43 . is selected (step S203). When determining that the operator has selected the brightness curve, the adjustment function 55 changes the set brightness curve to the brightness curve selected by the operator (step S205). The display control function 57 causes the brightness curve image GA40 corresponding to the brightness curve set by the adjustment function 55 to be displayed instead of the brightness curve image displayed on the display 42 . If it is determined that the operator has not selected the brightness curve, the adjustment function 55 directly proceeds to step S205.

Subsequently, the adjustment function 55 sets the change target representative image GA20 and the selective change target image group based on the selection operation of the input interface 43 by the operator (step S207). The display control function 57 causes the display 42 to display the brightness adjustment image when the adjustment function 55 sets the change target representative image GA20 and the selective change target image group.

FIG. 6 is a diagram showing an example of a brightness adjustment image when setting the change target representative image GA20 and the like. In the brightness adjustment image, an upper limit setting line GA12 and a lower limit setting line GA13 are displayed in the reference image GA10, and a division line GA31 is displayed in the change target image group GA30. The upper limit setting line GA12, the lower limit setting line GA13, and the division line GA31 are all GUI images.

The upper limit setting line GA12 and the lower limit setting line GA13 are lines that divide the area where the cross-sectional image to be the image to be changed is acquired. A cross-sectional image obtained based on an image captured in a range (hereinafter referred to as a selection range) sandwiched between the upper limit setting line GA12 and the lower limit setting line GA13 in the reference image GA10 is set as the change target image.

A sample image corresponding to the cross-sectional image acquired based on the image captured within the selected range is the sample image of the change target image (hereinafter referred to as the change target sample image GA32). When a plurality of change target sample images GA32 are set, one sample image or a plurality of sample images among them are selected as the change target representative image GA20. The change target representative image GA20 may be selected in any manner. For example, the sample image corresponding to the change target image group GA30 in the center of the change target sample image GA32 may be set as the change target representative image GA20.

A sample image (hereinafter referred to as a change target representative sample image) GA34 corresponding to the change target representative image GA20 is surrounded by a display frame image GA33 and highlighted. The change target representative sample image GA34 may be highlighted in another manner. For example, the change target representative sample image GA34 is brightly displayed, the change target sample images GA32 other than the change target representative sample image GA34 are displayed dimly, and the change target image group GA30 other than the change target sample image GA32 is dimly displayed. A darker pole may be displayed.

A selection change target image group is a set of change target images. The selective change target image group is selected, for example, by designating all of the change target image group GA30 of the cross-sectional images corresponding to the change target image group GA30 other than the change target sample image GA32 as the selective change target images. be done. In place of or in addition to the mode in which cross-sectional images are acquired based on the images captured in the selected range, cross-sectional images to be changed target image group GA30 may be designated by moving the division line GA31. .

Alternatively, all cross-sectional images included in the range of the upper limit setting line GA12 and the lower limit setting line GA13 may be specified and selected as the selection change target image group. In this case, the operator may select an image group to be selected and changed by moving the upper limit setting line GA12 and the lower limit setting line GA13 up and down.

Both the upper limit setting line GA12 and the lower limit setting line GA13 and the division line GA31 may be displayed, and cross-sectional images to be selected and changed may be designated by the same operation. Alternatively, sample images corresponding to the cross-sectional images included in the selection change target image group can be created by specifying the sample images individually or by specifying the sample images that are the start and end points of the range of the selection change target image group. May be specified.

Returning to the description of FIG. 3, the adjustment function 55 determines whether or not the brightness has been adjusted by manipulating the image (step S209). The luminance adjustment by operating the image is performed, for example, by operating the input interface 43 so as to increase or decrease the adjustment target item while the operator designates the adjustment target item (window level or window width) in the change target representative image GA20. It is done by Any manipulation of the input interface 43 to increase or decrease the brightness may be used. The operation may be, for example, an operation of up and down cursor keys or a rotating operation of a mouse wheel.

If it is determined that the brightness has been adjusted by operating the image, the adjustment function 55 adjusts the brightness curve according to the operation of the input interface 43 (step S211). If it is determined that the brightness is not adjusted by manipulating the image, the adjusting function 55 advances the process to step S213. Subsequently, the adjusting function 55 determines whether or not the brightness has been adjusted by manipulating the brightness curve (step S213).

Brightness adjustment by manipulating the brightness curve is performed, for example, by the operator operating the input interface 43 to transform the window level curve GA41 and the window width curve GA42, which are GUI images. The operation of the input interface 43 that transforms the window level curve GA41 and the window width curve GA42 may be any operation. The operation may be, for example, an operation of specifying a position to be deformed on the window level curve GA41 and the window width curve GA42 with a pointer and dragging it with a mouse.

If it is determined that luminance adjustment has not been performed by manipulating the luminance curve, the adjustment function 55 directly proceeds to step S217. If it is determined that the luminance adjustment has been performed by manipulating the luminance curve, the adjustment function 55 adjusts the luminance of the change target representative image GA20 and the change target representative sample image GA34 based on the operation of the input interface 43 (step S215). When a plurality of cross-sectional images are included in the change target image group GA30, adjusting the brightness of the change target representative image GA20 causes a difference in brightness between the change target representative image GA20 and the cross-sectional images not included in the change target image group GA30. getting too big.

In order to reduce discomfort due to this difference in brightness, the adjustment function 55 adjusts the brightness of cross-sectional images other than the change target representative image GA20 (hereinafter referred to as interpolation target cross-sectional images) among the cross-sectional images included in the change target image group GA30. do. For example, the adjusting function 55 adjusts the window width of the interpolation target cross-sectional image so that the difference between the window width set for the change target representative image GA20 and the interpolation target cross-sectional image gradually increases/decreases.

FIG. 7 is a diagram showing an example of a brightness adjustment image including an adjusted window width curve GA42. As the window width of the change target representative image GA20 is adjusted to be large, the window width at the position where the interpolation target cross-sectional image is acquired becomes closer to the change target representative image GA20 (closer to the cross-sectional line GA11). adjusted to a large extent. Therefore, the window width curve GA42, which indicates the window width of the cross-sectional image included in the range in which the cross-sectional image to be interpolated is acquired, has a slope that is larger the closer it is to the cross-sectional line GA11 and gradually becomes closer the farther away from the cross-sectional line GA11. shape.

Subsequently, when a plurality of representative images to be changed are selected, the adjustment function 55 interpolates the brightness of the plurality of cross-sectional images to be interpolated (hereinafter referred to as a group of images to be interpolated) (step S217). When a plurality of representative images to be changed are selected by the adjusting function 55, the set brightness may be duplicated, and there may be some images to be changed whose brightness cannot be uniquely determined. Therefore, the brightness is interpolated for the image to be changed whose brightness cannot be uniquely determined. If there is only one representative image to be changed, the process of step S217 is skipped.

FIG. 8 is a diagram showing an example of a brightness adjustment image including a window width curve GA42 in which the brightness of the interpolation target image group is interpolated. Here, it is assumed that the cross-sectional image of the upper limit setting line GA12 and the cross-sectional image of the lower limit setting line GA13 are set as the representative images to be changed, and the window width is adjusted for each. The cross-sectional line GA11 is displayed as being superimposed on the lower limit setting line GA13. In this case, the window width of the cross-sectional image at the upper limit setting line GA12 and the window width of the cross-sectional image at the lower limit setting line GA13 are connected by a curve to interpolate the window width of the cross-sectional image to be interpolated.

A curve connecting window widths to be interpolated as the window width of the cross-sectional image to be interpolated may be any curve, for example, linear or cubic spline. The window width to be interpolated in the cross-sectional images to be interpolated may be set collectively for all cross-sectional images, or may be set along the curve, etc., previously used, stored in the memory 41. good. By using the window width (curve) set in the group of images to be changed GA30 used in the past in other groups of images to be changed GA30 and other parts of the group of images to be changed GA30, a plurality of similar window widths (curves) can be obtained. can be set in place.

Interpolation of the window width of the interpolation target image group may be performed by setting the window width curve GA42 as a GUI image, designating a position to be deformed on the window width curve GA42 with a pointer, and deforming the window width curve GA42 by a handwriting operation. The handwriting operation can be, for example, an operation of dragging with a mouse.

FIG. 9 is a diagram showing an example of a brightness adjustment image including a window width curve GA42 deformed by a handwriting operation. For example, the window width curve GA42 may be deformed by displaying the pointer image GA14 at the position where the cross-section line GA11 and the window width curve GA42 overlap, and moving the pointer image GA14 by operating the input interface 43 by the operator. .

Furthermore, the window width of the cross-sectional image to be interpolated may be interpolated using the SD value of the representative image GA20 to be changed so that the window width curve has the same shape and width as the previously created window width curve. Brightness adjustment and interpolation may be performed on the window level or on both the window level and the window width.

Returning to the description of FIG. 3, after the adjustment function 55 interpolates the luminance of the interpolation target image group, the display control function 57 causes the display 42 to display the luminance curve adjusted and generated by the adjustment function 55 (step S219). . Further, the display control function 57 causes the display 42 to display the change target representative image GA20 and the change target image group GA30 with the brightness adjusted by the adjustment function 55 (step S219).

Subsequently, the adjustment function 55 determines whether or not the adjustment of the brightness curve and the brightness adjustment by manipulating the image are completed (step S221). The adjustment function 55 completes the brightness adjustment based on, for example, whether or not an electrical signal indicating completion of the brightness adjustment transmitted by the input interface 43 is received based on the operation of the input interface 43 by the operator. determine whether or not to

If it is determined that the brightness adjustment has not been completed, the adjustment function 55 returns the process to step S207 and continues the brightness adjustment. When the adjustment function 55 determines that the brightness adjustment has been completed, the setting function 56 determines whether or not the storage conditions for storing the brightness curve are satisfied (step S223). The save condition may be, for example, receiving an electrical signal indicating to save the luminance curve transmitted by the input interface 43 based on the operation of the input interface 43 by the operator. The storage condition may be that brightness adjustment is completed.

When determining to save the brightness curve, the setting function 56 stores and saves the brightness curve generated by the adjustment function 55 in the memory 41 (step S225). By storing the luminance curve, it is possible to hold and reproduce a plurality of luminance curves. When determining not to store the brightness curve, the setting function 56 advances the process to step S227.

Subsequently, the setting function 56 determines whether or not the setting condition is satisfied (step S227). The setting conditions may be any conditions. The setting condition may be, for example, reception of an electrical signal indicating to set the brightness transmitted by the input interface 43 based on the operation of the input interface 43 by the operator. The setting condition may be, for example, to save the brightness curve, or to output or print the original image (CT image) or cross-sectional image.

If it is determined that the setting condition is not satisfied, the setting function 56 returns the process to step S207, and the adjustment function 55 continues luminance adjustment. When it is determined that the setting condition is satisfied, the setting function 56 sets the luminance adjusted by the adjusting function 55 to the CT image (step S229). Thus, the X-ray CT apparatus 1 ends the processing shown in FIG.

In the X-ray CT apparatus 1 of the embodiment, an operator or the like adjusts the brightness of a plurality of cross-sectional images obtained from an original image, thereby facilitating processing of cross-sectional images used for diagnosis by a doctor or the like. In performing this brightness adjustment, the X-ray CT apparatus 1 of the embodiment causes the display 42 to display the brightness curve image GA40 together with the change target representative image GA20.

Therefore, the operator can adjust the luminance while confirming the luminance of the change target representative image GA20. Therefore, it is possible to reduce the labor required for adjusting display conditions of cross-sectional images used for diagnosis by a doctor or the like.

In the X-ray CT apparatus 1 described above, the brightness curve image GA40 includes a window level curve GA41, a window width curve GA42, a window level value GA43, and a window width value GA44, but the brightness curve may be another curve. FIG. 10 is a diagram showing an example of a brightness adjustment image including a brightness curve image GA50.

Brightness curve image GA50 includes window level curve GA51, window level value GA53, window width value GA54, and window width band image GA55. Window level curve GA51, window width curve GA52, and window level value GA53 are images similar to window level curve GA41, window width curve GA42, and window level value GA43.

The display control function 57 causes the display 42 to display the window level curve GA41, and causes the display 42 to display the window width strip image GA55. The window width strip image GA55 is an image of a surface having a width that changes according to the window width, with the window level curve GA41 as a reference. The display control function 57 causes the display 42 to display the window width using the window width strip image GA55.

The brightness curve image GA50 does not include an image corresponding to the window width curve GA42 in the brightness curve image GA40, but instead includes a window width strip image GA55. A window width value GA54 in the luminance curve image GA50 indicates a window width value corresponding to the window width band image GA55. The window width strip image GA55 is a strip image that spreads in the width direction of the display 42 with the window width curve GA52 as the center. The width of the window width strip image GA55 corresponds to the window width of the change target representative image GA20. In this way, the window width may be represented by a band-shaped image.

In the above-described embodiment, the image to be changed is divided into one group partitioned by the dividing line GA31, but the image to be changed may be divided into a plurality of groups. The change target representative image GA20 may be selected from change target images divided into groups, or may be selected from change target images other than the change target images divided into groups.

FIG. 11 is a diagram showing an example of a brightness adjustment image in which cross-sectional images are divided into a plurality of groups. The plurality of sample images displayed on the display 42 are divided into a first change target sample image GA32-1, a second change target sample image GA32-2, and a third change target sample image GA32-3.

The first modification target sample image GA32-1 is displayed on the display 42 surrounded by the first division line GA31-1. The second change target sample image GA32-2 is displayed on the display 42 surrounded by the second division line GA31-2. The third modification target sample image GA32-3 is displayed on the display 42 surrounded by the third division line GA31-3.

A cross-sectional image corresponding to the first change target sample image GA32-1 is a brightness adjustment image belonging to the first group. A cross-sectional image corresponding to the second change target sample image GA32-2 is a brightness adjustment image belonging to the second group. A cross-sectional image corresponding to the third change target sample image GA32-3 is a brightness adjustment image belonging to the third group. For example, the cross-sectional images belonging to the first group are cross-sectional images of the chest of the subject, the cross-sectional images belonging to the second group are cross-sectional images of the waist of the subject, and the cross-sectional images belonging to the third group are cross-sectional images of the pelvic region of the subject. is. Other criteria may be used to classify cross-sectional images into groups.

The reference image GA10 includes a first upper limit setting line GA12-1, a second upper limit setting line GA12-2, a third upper limit setting line GA12-3, a first lower limit setting line GA13-1, and a second lower limit setting line. A line GA13-2 and a third lower limit setting line GA13-3 are superimposed and displayed.

The first upper limit setting line GA12-1 and the first lower limit setting line GA13-1 are lines that divide the area where cross-sectional images belonging to the first group are acquired. The second upper limit setting line GA12-2 and the second lower limit setting line GA13-2 are lines that divide the area where cross-sectional images belonging to the second group are acquired. The third upper limit setting line GA12-3 and the third lower limit setting line GA13-3 are lines that divide the area where cross-sectional images belonging to the third group are acquired.

A cross-sectional line GA11 is also superimposed on the reference image GA10. A change target representative image GA20 is displayed adjacent to the reference image GA10. The cross-sectional image displayed as the change target representative image GA20 belongs to the second group. A change target representative sample image GA34 corresponding to the change target representative image GA20 is highlighted surrounded by display frame images GA33 belonging to the second group. In this manner, the cross-sectional images may be divided into multiple groups, and multiple sample images may be surrounded by multiple division lines. The operator can perform so-called sheet turning, in which cross-sectional images divided into a plurality of groups are selected for each group.

The change target representative image GA20 is displayed with the set luminance. For example, when a certain window level and window width are set in the change target representative image GA20, the area along the cross-sectional line GA11 is displayed according to the window level and window width. In this case, the set luminance information can be grasped simply by looking at the change target representative image GA20. Since the representative image GA20 to be changed is an MPR image and luminance information can be applied, the display control function 57 displays an image according to the set luminance information (window level and window width). If the representative image GA20 to be changed is a scanogram, the brightness information cannot be applied, so the appearance is set only according to the brightness information.

As an example of setting the appearance according to luminance information, for example, setting using window level information is used. As a setting using window level information, for example, the brightness value is increased in an area where the window level is set high, and the brightness value is decreased in an area where the window level is set low.

In addition to the luminance curve described above, the following curve may be used as the luminance curve. For example, a curve based on a frequently used brightness preset value or a brightness curve applied in the past including the previous time may be used. In addition, it may be a brightness curve that matches the organ or part that is the target of imaging, or the MIP value or average value (Ave value ) may be used. Also, based on information such as body thickness and CT value (guessed from the scan image), the mA value in the adjustment function (VolumeEC) that adjusts the X-ray intensity so that an image with the specified image quality can be obtained. A curve based on water equivalent thickness or the like used to calculate the value may also be used.

Further, when displaying the brightness adjustment image on the display 42, information useful for brightness adjustment may be displayed in addition to the brightness curve. For example, a frequently applied brightness preset value may be displayed, or a brightness curve applied in the past including the previous time may be displayed. In addition, it is also possible to display a brightness curve that matches the target organ or part of imaging, or to display a curve based on the MIP value or average value when the scanogram is projected in the Z direction. Further, based on information such as body thickness and CT value, the mA value in the adjustment function (VolumeEC) or a curve based on the water equivalent thickness used to calculate this mA value may be displayed.

The representative image GA20 to be changed is arbitrarily set based on the operation of the input interface 43 by the operator. can be The specific image may be, for example, an image in the center of the selection range, or an image corresponding to the upper limit or lower limit of the selection range. Alternatively, the image may be an image having characteristic points in a range of organs, bones, or the like, or may be an image that serves as a boundary line. Alternatively, it may be an image at a relative position within the change range that is frequently selected as the change target representative image GA20, or an image at a relative position that takes into account the target part. Alternatively, a plurality of images in which these are combined may be used.

Further, when storing the brightness curve, information other than the brightness curve may be added and stored. For example, it is information when imaging a subject, such as the imaging site, medical purpose, pathology, contrast agent, body shape and age category, dose, scan type, radiological technologist, imaging date, brightness curve creation date, brightness curve usage frequency, etc. Shooting information may be added. Also, the stored brightness curves may be classified based on the added shooting information. The stored brightness curve may be used in cases other than adjusting the brightness of the cross-sectional image so that the cross-sectional image can be easily processed for diagnosis. For example, it may be used as the luminance when the subject P is scanned. In this case, the brightness curve may be displayed on the real-time display image when the subject P is scanned. The display control function 57 may display the photographing information on the display 42 when displaying the luminance curve image GA40 on the display 42 .

In addition, the information of luminance set in the cross-sectional image may be included in the image supplementary information of the original image. In this case, when the original image or cross-sectional image is displayed again, or when it is transferred to another device such as a workstation and displayed again, it can be displayed with suitable brightness. The X-ray CT apparatus 1 may automatically store the luminance information of the original image or cross-sectional image when the output operation is performed and the trigger is established. In this case, it is possible to save the trouble of an operator or the like manually storing luminance information. Examples of output operations include image storage, secondary image storage such as measurement, image transfer, image inspection of photographed images, film output, MPR image storage, and printing (printer output). By automatically storing the set brightness in the incidental information of the original image, the brightness suitable for examination can be left in the original image.

Further, in the X-ray CT apparatus 1 of the embodiment, it is possible to collectively adjust the brightness of a plurality of images by brightness interpolation. Therefore, working efficiency can be improved. In addition, it is possible to adjust the brightness of a plurality of cross-sectional images while making subtle differences. Therefore, delicate work can be carried out efficiently. Also, by setting the luminance adjustment range, it is possible to efficiently perform partial changes.

Saving, selecting, and restoring luminance curves also facilitates similar tasks. In addition, by selecting and restoring the brightness curve, it is possible to generate a cross-sectional image in which the brightness is appropriately set from the beginning. In addition, since the overall luminance can be viewed from the luminance curve, setting errors and omissions can be easily found.

In addition, since the overall brightness can be viewed from the brightness curve, the progress of the work can be easily understood. In addition, by collectively adjusting the brightness of a plurality of images, it is possible to easily perform collective work such as slightly darkening the entire image using a brightness curve. Also, by applying the brightness curve as a parameter at the time of scanning, a real-time image at the time of scanning can be displayed with easy-to-see brightness. Also, the image may be an image other than the CT image (X-ray CT image) obtained by the X-ray CT apparatus 1 . For example, the image may be MRI (Magnetic Resonance Imaging) or other images.

In the above embodiment, the reference image is a scanogram image, but the reference image may be another image, for example, a processed image such as an MPR image, MIP image, or SVR image. When an MPR image or an SVR image is used as a reference image, it is stored in the memory 41 after three-dimensional image processing.

According to at least one embodiment described above, the adjustment for adjusting the display condition when displaying the cross-sectional image generated from the original image based on the detection result of the detector is performed based on the input information input by the operator. and a display control unit that visualizes the display conditions of a plurality of cross sections and displays them on the display unit when adjusting the display conditions, thereby reducing the labor required for adjusting the display conditions of cross-sectional images. That is.

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

DESCRIPTION OF SYMBOLS 1... X-ray CT apparatus 10... Mounting apparatus 11... X-ray tube 12... Wedge 13... Collimator 14... X-ray high-voltage apparatus 15... X-ray detector 16... DAS
Reference Signs List 17 Rotating frame 18 Control device 30 Bed device 31 Base 32 Bed vertical movement device 33 Top plate 34 Support frame 40 Console device 41 Memory 42 Display 43 Input interface 50 Processing circuit 51 Control function 52 Preprocessing function 53 Reconstruction processing function 54 Image processing function 55 Adjustment function 56 Setting function 57 Display control function GA10 Reference image GA11 Section line GA12 Upper limit setting line GA13 Lower limit setting line GA14 Pointer image GA20 Change target representative image GA21 Window level/window width value image GA30 Change target image group GA31 Section line GA32 Change target sample image GA33 Display frame image GA34 Change target representative sample images GA40, GA50... Brightness curve images GA41, GA51 Window level curves GA42, GA52 Window width curves GA43, GA53 Window level values GA44, GA54 Window width value GA55 Window width strip image P Subject

Claims (13)

an adjustment unit that adjusts display conditions for a cross-sectional image based on the detection result of the detector, based on input information input by an operator;
a display control unit that visualizes the display conditions of a plurality of cross sections and displays them on a display unit when adjusting the display conditions;
Medical image processing equipment. The display control unit causes the display unit to display a change target image to be adjusted by the adjustment unit, among the cross-sectional images.
The medical image processing apparatus according to claim 1. The display control unit causes the display unit to display a change target representative image selected from among the plurality of change target images.
The medical image processing apparatus according to claim 2. The display conditions include a brightness window level and a window width,
The medical image processing apparatus according to any one of claims 1 to 3. The display control unit causes the display unit to display the window level and the window width as mutually independent graphs.
The medical image processing apparatus according to claim 4. The display control unit causes the display unit to:
displaying the window level graphically;
displaying the window width by a surface having a width that varies according to the window width, with the graph as a reference;
The medical image processing apparatus according to claim 4. The adjustment unit acquires the display conditions from a storage unit that stores a plurality of the display conditions.
The medical image processing apparatus according to any one of claims 1 to 6. The display control unit causes the display unit to further display imaging information, which is information when imaging the subject.
The medical image processing apparatus according to any one of claims 1 to 7. further comprising a setting unit that sets the display condition adjusted by the adjustment unit to the original image of the cross-sectional image when an output operation for outputting the cross-sectional image is performed;
The medical image processing apparatus according to any one of claims 1 to 8. The setting unit causes a storage unit to store the display conditions adjusted by the adjustment unit.
The medical image processing apparatus according to claim 9. an adjustment unit that adjusts display conditions for a cross-sectional image based on the detection result of the detector, based on input information input by an operator;
a setting unit that sets the display condition adjusted by the adjustment unit to the original image of the cross-sectional image when an output operation for outputting the cross-sectional image is performed;
a display control unit that visualizes the display conditions of a plurality of cross sections and displays them on a display unit when adjusting the display conditions;
Medical image processing equipment. the computer
Based on the input information input to the input unit, adjust the display conditions of the cross-sectional image based on the detection result of the detector,
visualizing the display condition and displaying it on a display unit when adjusting the display condition;
Medical image processing method. to the computer,
Adjusting the display conditions of the cross-sectional image based on the detection result of the detector based on the input information input by the operator,
Visualizing the display conditions of a plurality of cross-sections and displaying them on a display unit when adjusting the display conditions;
program.

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