JP6510187B2 - Medical image processing device - Google Patents

Description

  Embodiments of the present invention relate to a medical image processing apparatus that processes and displays medical images.

  In a medical image diagnostic apparatus such as MRI (Magnetic Resonance Imaging), when collecting an image in a wider range than FOV (Field of View), each region of the subject is divided into several images and imaged. A wide range of images is created by combining a plurality of images obtained by this imaging. Generally, the above-mentioned wide area image is called a stitching image. Using this stitching image, the user can observe a wide area on a single stitching image. Therefore, the user can easily recognize the entire image of the subject.

  However, since a stitching image is larger than an image captured with a single FOV, a large display area is required. If it is attempted to display a stitching image in the same display area as an image captured by a single FOV, the stitching image is displayed in a reduced size. This makes it difficult for the user to observe the stitching image. In addition, when the stitching image is displayed without being reduced, the entire stitching image can not be displayed. Therefore, the user needs to move the stitching image to a desired position using Pan or the like. The moving operation of the stitching image has a problem that the user is bothersome.

  An object of the present embodiment is to provide a medical image processing apparatus capable of displaying a stitching image which can be easily observed by a simple operation.

In the medical image processing apparatus according to the present embodiment, a plurality of cross-sectional images respectively corresponding to a plurality of cross-sectional positions with respect to a subject, a stitching image corresponding to a cross section along the long axis direction of the subject, and the stitching A storage unit storing the cross-sectional position in an image; a cross-sectional position specifying unit identifying a cross- sectional position in the stitching image in response to a cross-sectional position designation operation using an input unit; A partial image of the stitching image including the image, a cutout unit for cutting out the stitching image, and a cross-sectional image corresponding to the specified cross-sectional position in the first region of the screen, the specified cross-sectional position being indicated a partial image comprises a display unit for displaying the second region of the screen, the cross-sectional position specifying unit, the cross-sectional position is changed using the input unit In this case, the cross-sectional position after the change is specified in the stitching image, and the display unit displays the cross-sectional image corresponding to the cross-sectional position after the change in the first region and the input unit. While the change operation of the cross-sectional position used is performed, a portion of the stitching image wider than the partial image is displayed in a third area of the screen wider than the second area of the screen, and the input unit And displaying the partial image indicating the cross-sectional position after the change in the second area of the screen, when the change operation of the cross-sectional position using the .

1 is a block diagram showing a medical image diagnostic apparatus according to the present embodiment. FIG. 6 is a view showing an example of a stitching image created by the arithmetic unit shown in FIG. 1; FIG. 3 is a schematic diagram for explaining a process for creating a stitching image shown in FIG. 2; FIG. 2 is a block diagram showing functions implemented by execution of a computer program by the arithmetic unit shown in FIG. 1; The figure which shows the specific example 1 of the extraction area | region in a stitching image, 1st area | region, and 2nd area | region. FIG. 7 is a view showing a second specific example of the cutout region, the first region, and the second region in the stitching image. FIG. 7 is a view showing a first specific example for illustrating a process of fitting (superimposing) a partial image in the display area of the display shown in FIG. 1; FIG. 7 is a view showing a second specific example for illustrating a process of fitting (superimposing) a partial image in the display area of the display shown in FIG. 1;

  Hereinafter, a medical image diagnostic apparatus equipped with the medical image processing apparatus 100 according to the present embodiment will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a medical image diagnostic apparatus according to the present embodiment. FIG. 1 shows a magnetic resonance imaging (MRI) apparatus provided with a function of stitching and displaying an MRI (Magnetic Resonance Imaging) image as a specific example of a medical image diagnostic apparatus.

  The medical image diagnostic apparatus equipped with the medical image processing apparatus 100 may be an X-ray computed tomography apparatus, an X-ray diagnostic apparatus, or the like.

  As shown in FIG. 1, in the magnetic resonance imaging apparatus, a bed unit on which a patient as the subject P is placed, a static magnetic field generating unit generating a static magnetic field, and a gradient magnetic field generating unit for adding positional information to the static magnetic field A transmitting / receiving unit for transmitting / receiving a high frequency signal, a control / calculating unit for controlling the entire system and image reconstruction, and a respiratory waveform acquiring unit for measuring a respiratory waveform signal as a signal representing a waveform of the respiratory cycle of the object P And a breath holding command unit for commanding the patient to hold a breath.

The static magnetic field generation unit includes, for example, a superconducting magnet 1 and a static magnetic field power supply 2 for supplying a current to the magnet 1, and an axial direction of a cylindrical opening (diagnosis space) in which a subject P is loosely inserted. A static magnetic field H ₀ is generated in the (Z-axis direction). A shim coil 14 is provided in this magnet unit. A current for static magnetic field equalization is supplied to the shim coil 14 from the shim coil power supply 15 under the control of a host computer described later. The bed portion can insert the top plate on which the subject P is placed into the opening of the magnet 1 in a retractable manner.

  The gradient magnetic field generation unit includes a gradient magnetic field coil unit 3. The gradient coil unit 3 includes three sets of coils 3x, coils 3y, and coils 3z for generating gradient magnetic fields in the X, Y, and Z axis directions orthogonal to one another. The gradient magnetic field generator also includes a gradient magnetic field power supply 4 for supplying current to the coils 3x to 3z. The gradient magnetic field power supply 4 supplies pulse current for generating a gradient magnetic field to the coils 3x to 3z under the control of the sequencer 5 described later.

By adjusting the pulse current supplied from the gradient magnetic field power supply 4 to the coils 3x to 3z, the gradient magnetic fields of the X, Y, and Z directions which are physical axes are synthesized, and slice direction gradient magnetic fields Gs orthogonal to each other The respective logical axis directions of the phase encoding direction gradient magnetic field Ge and the reading direction (frequency encoding direction) gradient magnetic field Gr can be set arbitrarily. Slice direction, gradient magnetic fields in the phase encoding direction and the readout direction are superimposed on the static magnetic field H _0.

  The transmitting and receiving unit includes an RF coil 7 disposed in the vicinity of the subject P in the imaging space in the magnet 1, a transmitter 8T and a receiver 8R connected to the coil 7. The transmitter 8T and the receiver 8R operate under the control of the sequencer 5 described later. The transmitter 8T supplies an RF pulse of Larmor frequency to the RF coil 7 to cause nuclear magnetic resonance (NMR). The receiver 8R takes in an echo signal (high frequency signal) received by the RF coil 7 and subjects it to various signal processing such as preamplification, intermediate frequency conversion, phase detection, low frequency amplification, filtering, etc. / D conversion is performed to generate echo data (original data) of a digital amount corresponding to the echo signal.

  The control and operation unit includes a sequencer (also called a sequence controller) 5, a host computer 6, an operation unit 10, a storage unit 11, a display 12, an input unit 13 and an audio generator 16. Among these, the host computer 6 has a function of instructing the sequencer 5 of the pulse sequence information by the stored software procedure, and controlling the overall operation of the device.

  The host computer 6 carries out an imaging scan following preparation work such as a positioning scan. An imaging scan is a scan that acquires a set of echo data necessary for image reconstruction.

  The pulse sequence is a three-dimensional (3D) scan or a two-dimensional (2D) scan. The form of the pulse train is, for example, SE (spin echo) method, FSE (fast spin echo) method, FASE (fast asymmetric symmetric spin echo) method, EPI (echo planar imaging) method, coherent gradient echo (True SSFP, True) The FISP, balanced FFE) method or the like can be used.

  The sequencer 5 includes a CPU and a memory, and stores, for example, pulse sequence information sent from the host computer 6, and controls operations of the gradient power supply 4, transmitter 8T and receiver 8R according to the information. At the same time, the echo data output from the receiver 8R is once input and transferred to the arithmetic unit 10. The pulse sequence information is all the information necessary to operate the gradient power supply 4, the transmitter 8T and the receiver 8R according to a series of pulse sequences, for example, the intensity of the pulse current applied to the coils 3x to 3z, the application time , Information on application timing and the like.

  The arithmetic unit 10 receives echo data output from the receiver 8R via the sequencer 5. Arithmetic unit 10 arranges echo data in Fourier space (also called k space or frequency space) on its internal memory, applies this echo data to each group for 2-dimensional or 3-dimensional Fourier transform, Reconstitute image data of In addition, the arithmetic unit can perform composition processing of image data, difference arithmetic processing, and the like as necessary.

  The combining process is an addition process of adding image data of a plurality of two-dimensional frames for each corresponding pixel, a maximum value projection (MIP) process of selecting the maximum value or the minimum value of the viewing direction with respect to three-dimensional data Value projection processing etc. are included. Further, as another example of the combining process, the axes of a plurality of frames may be aligned in Fourier space, and the echo data may be combined with the echo data of one frame as it is. The addition processing includes simple addition processing, addition averaging processing, weighted addition processing, and the like.

  The arithmetic unit 10 stitches the plurality of reconstructed MR images. FIG. 2 is a view showing an example of a stitching image created by the arithmetic unit 10. As shown in FIG. FIG. 3 is a schematic diagram for explaining the process for creating the stitching image shown in FIG. As shown in FIG. 2, the magnetic resonance imaging apparatus divides an imaging target region of a subject into a plurality of regions, and images these regions. The arithmetic unit 10 creates a stitching image by combining (stitching) a plurality of longitudinal cross-sectional images (axial images) A, B, and C generated according to imaging. At this time, as shown in FIG. 3, the arithmetic unit 10 superimposes the overlapping parts of the respective images as shown in FIG. Join.

  The storage unit 11 stores the MR images etc. reconstructed by the arithmetic unit 10 and the stitching image created by the arithmetic unit 10. The storage unit 11 includes, as a storage medium, an HDD (Hard Disk Drive), an SSD (Solid State Drive), or the like capable of storing relatively large-capacity data. The storage unit 11 can store not only the reconstructed image data but also the image data that has been subjected to the above-described combining process and difference process.

  The storage unit 11 stores a plurality of cross-sectional images (hereinafter referred to as a first image) reconstructed by the arithmetic unit 10. The plurality of first images respectively correspond to a plurality of cross-sectional positions (for example,) with respect to the subject. The cross sections corresponding to the plurality of first images correspond to, for example, a cross section (axial) of the subject. The storage unit 11 corresponds to a cross section (for example, a coronal cross section, a sagittal cross section, etc.) along the long axis direction of the subject, and a cross section image (hereinafter referred to as the second) reconstructed by the operation unit 10. Store the image). The second image is, for example, a stitching image generated by the arithmetic unit 10. The storage unit 11 stores the cross-sectional position of each of the first images in the stitching image.

  The display 12 displays an image under the control of the host computer 6. The display 12 is a display such as an LCD (Liquid Crystal Display) or an OELD (Organic ElectroLuminescence Display).

  The input unit 13 is an I / F for inputting information about an imaging condition desired by the operator, a pulse sequence, image synthesis and difference calculation to the host computer 6. The input unit 13 is an interface for inputting a command or the like according to the user's operation, and includes, for example, a keyboard, a mouse, a touch panel, a trackball, and various buttons.

  The voice generator 16 is provided as an element of the breath holding command unit. The voice generator 16 can emit the breath hold start and breath hold end messages as an instruction from the host computer 6. The voice generator 16 is provided as an element of the breath holding command unit. The voice generator 16 can emit the breath hold start and breath hold end messages as an instruction from the host computer 6.

  The respiration waveform acquisition unit includes a respiration waveform acquisition unit 18 that measures the movement of the subject and the like to acquire the respiration waveform of the patient and outputs the acquired respiration waveform to the host computer 6 and the sequencer 5. The respiration waveform by the respiration waveform acquisition unit 18 is used by the sequencer 5 when performing an imaging scan. As a result, it is possible to appropriately set the exhalation synchronization timing by the respiratory synchronization method, and it is possible to perform data acquisition by performing an imaging scan based on this synchronization timing.

  A communication unit (not shown) is used to transmit and receive image data and control data via a network with a hospital information system (HIS) that manages the entire hospital. The hospital information system is also connected with medical devices such as diagnostic X-ray systems and X-ray CT devices, and a Radiology Information System (RIS) that centrally manages medical images of these medical devices. ing.

  FIG. 4 is a block diagram showing functions implemented by execution of the computer program by the arithmetic unit 10 shown in FIG.

  The arithmetic unit 10 includes a first area setting unit 10-1, a second area setting unit 10-2, a clipping region setting unit 10-3, a clipping unit 10-4, an image reading unit 10-5, and a reference line according to a computer program. The function as the moving unit 10-6 is realized.

Figure 5 is a diagram showing a stitching image definitive cutout region F _3, the first region F _1, a specific example 1 of the second region F _2. The arithmetic unit 10 joins together a plurality of longitudinal sectional images shown in FIG. 5A (in FIG. 5A, three 512 × 512 pixel images obtained by imaging three regions of the object are joined). 5 (b) is created (in FIG. 5 (b), it is an image of 512 × 1280 pixels).

For example, as shown in FIG. 5B, the origin of the coordinates of the pixel in the stitching image is defined at the upper left of the stitching image. In FIG. 5B, it is assumed that the center coordinates of the cross-sectional position of the first image in the stitching image is (x, y). Further, the size of the partial image cut out from the stitching image is assumed to be 512 × 512 pixels. At this time, in the stitching image, the coordinates (reference positions) of the four corners of the region (cutout region) of the partial image cut out from the stitching image are (0, y-256), (511, y-256), (0) , Y + 255), (511, y-256). That is, the width in the y direction (longitudinal direction) in the cutout region is a range of 512 pixels with y as the center ((y−256) ≦ y ≦ (y + 256)). The width in the x direction (lateral direction) in the cutout region is in the range of 0 to 511 pixels. Thus, the width in the x direction (horizontal direction) in the cutout region matches the width of the inset region (second region F ₂ ) of the partial image to be superimposed on the first region F ₁ on which the first image is displayed.

The first area setting unit 10-1 displays, on the display area of the display 12, at least one cross-sectional image among the plurality of first images respectively corresponding to the plurality of cross sections (axial planes) of the subject. The first area F ₁ is set.

Second area setting unit 10-2, on the display area of the display unit 12, sets a second region F ₂ for displaying the partial image stitching image corresponding to the longitudinal section of the subject (the sagittal plane).

At this time, the second region _{F 2} is smaller than the first area _{F 1.} For example, as shown in FIG. 5 (c), when the size of the first region _{F 1} is 512 × 512 pixels, a second region _{F 2,} the first quarter of the size of the area _{F 1} (128 × 128 pixels ). The second region _{F 2} is set to the lower right of the first region _{F 1.} Note that the second region F ₂ may be set to a first anywhere region F _1.

Second area setting unit 10-2, the partial image displayed on the second region F _2, reference line provided (straight line) showing the cross-sectional position of the first image displayed in the first region F _1.

Cutout region setting unit 10-3 sets a clip region F ₃ for cutting out a portion of the stitching images from stitching images. Specifically, the cutout area setting unit 10-3 specifies a cross-sectional position of the first image specified via the input device 13 in the stitching image. Cutout region setting unit 10-3, based on the specified cross-sectional position, the cutout region F _3, set on stitching images. Cutout region setting unit 10-3, based on the size of stitching image (the length of the short side of the stitching images), setting the size of the clip region F _3. The size of the clip region F ₃ is, for example, the length of the short side of the stitching image square area and a length of one side. Cutout region setting unit 10-3, for example, as shown in FIG. 5 (b), in the stitching images, a cutout region _{F 3} and 512 × 512 pixels.

Cutout portion 10-4, in accordance with the cut-out region F ₃ which is set, cutting out a partial image from the stitching images.

Figure 6 is a diagram illustrating a cutout region F ₃ in stitching images, the first region F _1, a specific example 2 of the second region F _2. The magnetic resonance imaging apparatus uses three 512 × 512 pixel images obtained by imaging each region of the subject in FIG. 6 (a) (FIG. 6 (a) as in FIG. 5 (a)). Are joined to create a stitched image (an image of 512 × 1280 pixels in FIG. 6B) shown in FIG. As shown in FIG. 6 (c), when the first size of the area _{F 1} and 512 × 512 pixels, a second region _{F 2} becomes 1/4 (128 × 128pixel) of the first region _{F 1.}

Cutout region setting unit 10-3, based on the length of the reference line along the short side of the stitching images, setting the size of the clip region F _3. The size of the clip region F ₃ is, for example, the length of the reference line is a square region and one side. In FIG. 6B, it is assumed that the center coordinates of the cross-sectional position of the first image in the stitching image is (x, y). Further, as shown in FIG. 6B, the coordinates of both ends of the reference line are (x1, y1) and (x2, y2). At this time, the length of the reference line is (x2-x1). In this case, coordinates of the four corners of the cutout region _{F 3} is, (x1, y- (x2- x1) / 2), (x2, y- (x2-x1) / 2), (x1, y + (x2-x1) / 2), (x2, y + (x2-x1) / 2).

In the case where the reference line is inclined, that is, when the first image is an oblique image, the cutout area of the cutout area according to the angle between the horizontal axis (x axis) or the vertical axis (y axis) and the reference line. The criteria to match are different. For example, if the angle between the horizontal axis and the reference line is located between -45 ° and 45 °, the reference is the length of the reference line (x2-x1) along the x-axis, and It becomes the same as the coordinates. On the other hand, when the angle between the horizontal axis and the reference line is between 45 ° and 135 °, the reference is the length of the reference line (y2-y1) along the y-axis. At this time, the coordinates of the four corners of the cutout region F ₃ are (x− (y2−y1) / 2, y1), (x + (y2−y1) / 2, y1), and (x− (y2−y1) / 2). , Y2), (x + (y2-y1) / 2, y2).

In addition to the cut-out area F _3, which is the set also, cutout region setting unit 10-3, a square area width of one side is the maximum diameter of the object to be displayed by stitching images, cutout region F ₃ It may be set as The second region F ₂ has been set on a first area F _1, it is not limited thereto. The second region F _2, the first region F ₁ in separate frame may be provided in the display area. At this time, the second region F ₂ can, for example, may be set in the third area F _3, which additional information of the medical image to be displayed is displayed.

  FIG. 7 is a view showing a first specific example for explaining a process of fitting (superimposing) a partial image in the display area of the display 12 shown in FIG.

The first image displayed in the first region in FIG. 7 (b), the the operation of moving the display section (e.g., image flipping) is input via the input unit 13 by the user, the first region F ₁ As shown in FIG. 7 (c), an image different from the first image of FIG. 7 (b) is displayed. At this time, the cutout region setting unit 10-3, the stitching images, the broken line cutout region shown in FIG. 7 (a) to the cut-out region of the dashed line, changes the cutout area F _3. As a result, the partial image cut out by the cutout unit 10-4 is changed from the partial image of FIG. 7B to the partial image of FIG. 7C. Therefore, the partial image to be displayed on the second region F ₂ is displayed by changing in FIG. 7 (c) from Fig. 7 (b). At this time, the position of the reference line that is superimposed on the partial image to be displayed is maintained at the center of the second region F _2.

  The image reading unit 10-5 reads the first image corresponding to the changed cross-sectional position from the storage unit 11 according to the moving operation of the first image, that is, the change of the cross-sectional position of the first image.

Display device 12, the first area _{F 1,} and displays the first image read by the image reading unit 10-5. Further, display device 12, the second region _{F 2,} and displays the partial image extracted by the cutout portion 10-4. The display 12 superimposes and displays the reference line at the center of the partial image.

  FIG. 8 is a view showing a second specific example for illustrating the process of fitting (superimposing) a partial image in the display area of the display 12 shown in FIG.

As shown in FIG. 8A, the reference line moving unit 10-6 moves the reference line provided by the second area setting unit 10-2 in accordance with the user's operation. The first lower area F ₁ of FIG. 8 (a), for example, the third region F ₄ for displaying the additional information of the first image is assumed to be located.

Cutout region setting unit 10-3, as (in the present embodiment, the drag operation with respect to the reference line) movement of the reference line by the user with the center of the reference line is always located in the second center of the area F _2, to set the cut-out area _{F 3.}

At this time, the second region setting unit 10-2 causes the entire stitching image to be displayed (for example, overlay display) in response to a user operation (for example, a drag operation on a reference line) via the input device 13. , 2nd area F ₂ is set. Specifically, as shown in FIG. 8B, the second region setting unit 10-2 does not change the position of the partial image at the start of the drag operation and the zoom (scale) of the partial image, and the entire stitching image Show (or semi-transparent display) region and is set as the second area F _2. Note that the second region F ₂ is set, up to a region spanning the upper portion and the third region F ₄ of the display area may be an area which extends the second region F ₂ before the drag operation.

In addition, when the user moves the reference line through the input device 13, that is, when the drag operation is released, the second region setting unit 10-2 causes the display of the entire stitching image to return to the second original. setting the second region F ₂ back to the display size of the area.

  Here, when displaying the entire stitching image, the display 12 may adjust the size of the stitching image so that the stitching image falls within the display area of the display 12. Specifically, the display 12 fixes point coordinates on the image corresponding to the mouse position at the start of the drag operation, the upper end or the lower end of the stitching image contacts the upper end or the lower end of the display area, and the display area Adjust the zoom to fit the stitching image to.

According to the above configuration, the medical image processing apparatus 100 according to the embodiment, by setting the clipping region F ₃ for cutting the stitching images, with the first image of the changing operation by the user, is displayed in the second area F ₂ Change the partial image of the stitching image. Further, the medical image processing apparatus 100, with the movement of the reference line by a user, the center of the reference line is always to be located in a second central region F _2, sets a clip region F _3. Thereby, the medical image processing apparatus 100 can perform reference display of the first image by the partial image of the stitching image in conjunction with the operation of changing the display position of the first image.

  Therefore, the medical image processing apparatus 100 according to the present embodiment can display a stitching image that can be easily observed by a simple operation.

Further, the medical image processing apparatus 100 sets the size of the second region F ₂ suitable for the user's observation and cuts out a partial image from the display position of the cross section of the object and the subject shape on the stitching image at the display position. To display a stitching image that is easy for the user to view.

  Further, according to the medical image processing apparatus 100, the entire stitching image can be displayed by expanding the second area triggered by the user's operation (drag operation) on the reference line via the input device 13. . As a result, the user can easily grasp the cross-sectional position of the cross-sectional image (first image) with respect to the entire stitching image, and the operation for moving the reference line to the cross-sectional position desired by the user becomes simple.

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

  DESCRIPTION OF SYMBOLS 1 ... Magnet, 2 ... Static magnetic field power supply, 3 ... Gradient magnetic field coil unit, 3x-3z ... Coil, 4 ... Gradient magnetic field power supply, 5 ... Sequencer, 6 ... Host computer, 7 ... Coil, 8R ... Receiver, 8T ... Transmission 10: operation unit, 10-1: first area setting unit, 10-2: second area setting unit, 10-3: cutout area setting unit, 10-4: cutout section, 10-5: image reading unit , 10-6 ... reference line moving unit, 11 ... memory unit, 12 ... indicator, 13 ... input device, 14 ... shim coil, 15 ... shim coil power supply, 16 ... voice generator, 18 ... respiratory waveform collection unit, 100 ... medical Image processing device.

Claims (10)

A storage unit that stores a plurality of cross-sectional images respectively corresponding to a plurality of cross-sectional positions with respect to a subject, a stitching image corresponding to a cross-section along the long axis direction of the subject, and the cross-sectional positions in the stitching image When,
A cross-sectional-position specifying unit that specifies a cross-sectional position in the stitching image in response to a designation operation of a cross-sectional position using an input unit, and displays the specified cross-sectional position on the stitching image;
A cutout unit that cuts out a partial image of the stitching image including the identified cross-sectional position from the stitching image;
A display unit for displaying in the first area of the screen a cross-sectional image corresponding to the specified cross-sectional position and the partial image showing the specified cross-sectional position in a second area of the screen;
When the cross-sectional position is changed using the input unit, the cross-sectional position specifying unit specifies the changed cross-sectional position in the stitching image;
The display unit displays the cross-sectional image corresponding to the cross-sectional position after the change in the first region, and the partial image is displayed while the change operation of the cross-sectional position using the input unit is performed. The portion of the wider stitching image is switched to the third area of the screen which is wider than the second area of the screen and displayed, and the changing operation of the cross-sectional position using the input unit is completed. Displaying the partial image showing the cross-sectional position after change from the third area of the screen to the second area;
A medical image processing apparatus comprising: Wherein the display unit, on the stitching picture image, and displays the reference line corresponding to the cross-sectional position specified or changed by the cross-sectional position specifying unit,
The cross-sectional position specifying unit, the input unit using the based on the display position of the reference line is changed on the stitching picture image, identifying the cross-sectional position of the changed in the stitching images,
The medical image processing apparatus according to claim 1 , wherein   3. The image display device according to claim 1, wherein the display unit displays the entire stitching image in the third area while the change operation of the cross-sectional position using the input unit is performed. The medical image processing apparatus as described. The cutout unit is
Cutting out the partial image from the stitching image such that a straight line indicating the identified cross-sectional position is located at the center of the partial image;
The medical image processing apparatus according to claim 3, wherein the medical image processing apparatus according to claim 1 or claim 1 is directly cited . The cutout unit is
Cutting out the partial image from the stitching image such that the reference line is located at the center of the partial image;
The medical image processing apparatus according to claim 3, wherein the second aspect is directly cited. The display unit is
Having a first region for displaying the cross-sectional image, and a second area for displaying the partial image A narrower than the first region region,
The medical image processing apparatus according to any one of claims 1 to 5 , wherein The display unit is
Reducing and displaying the partial image at a ratio of a lateral length of the second region to a length of a short side of the stitching image;
The medical image processing apparatus according to any one of claims 1 to 6 , wherein The display unit is
Reducing and displaying the partial image at a ratio of a lateral length of the second region to a length of the straight line along the minor axis direction of the stitching image;
The medical image processing apparatus according to claim 4 , characterized in that The display unit is
The incidental information incidental to the cross-sectional image displayed in the first area is displayed in a fourth area of the screen;
Taking the movement of the reference line as a trigger, the second area is superimposed on the fourth area along the vertical direction of the display area in the display unit to form the third area expanded to the end of the display area. ,
Displaying the stitching image superimposed with the reference line in a reduced size according to the expanded third area;
The medical image processing apparatus according to claim 2, characterized in that The cross-sectional position identification unit
Identifying a cross-sectional position corresponding to the position of the reference line based on the relative positional relationship between the stitching image and the reference line;
The input unit is
Enter a stop instruction to stop the movement of the reference line,
The cutout unit is
The partial image is cut out from the stitching image so that the stop position of the reference line is positioned at the center of the partial image in response to a stop instruction using the input unit.
The display unit is
The second area in which the third area is switched is displayed in the first area in which the cross-sectional image corresponding to the identified cross-sectional position is displayed. To be superimposed and displayed,
The medical image processing apparatus according to claim 2 or 9 , characterized in that

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