WO2013129448A1 - 医用画像表示装置、及び医用画像表示方法 - Google Patents
医用画像表示装置、及び医用画像表示方法 Download PDFInfo
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- WO2013129448A1 WO2013129448A1 PCT/JP2013/055074 JP2013055074W WO2013129448A1 WO 2013129448 A1 WO2013129448 A1 WO 2013129448A1 JP 2013055074 W JP2013055074 W JP 2013055074W WO 2013129448 A1 WO2013129448 A1 WO 2013129448A1
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Images
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Definitions
- the present invention relates to a medical image display apparatus and a medical image display method, and more particularly to a user support function suitable for displaying and searching for continuous images.
- Patent Document 1 in order to facilitate the designation of series data and images that are continuous in the body axis direction (continuous images), an image having a matrix-shaped coordinate display means that indicates series data in the row direction and continuous images in the column direction. A display device is described. Then, by placing a cursor on the coordinate display means and displaying the image at the position of the cursor or reducing / enlarging the cursor, the number of display images can be specified.
- Patent Document 2 describes an image display method in consideration of image position information and thickness in the body axis direction, an image display method according to an image selection method, and the like. According to the medical image display devices described in Patent Document 1 and Patent Document 2 described above, it is possible to display a continuous image in two dimensions on two axes, a series data axis and a body axis direction axis.
- a parameter called RR time phase is specified when reconstructing.
- the R-R time phase is a parameter for designating how many percent of the projection data collected from the R wave is to be reconstructed based on the R wave of the electrocardiogram.
- the operator In order to determine the optimal RR time phase, for example, in the case of diastole, the operator generally (1) first reconfigures the 30 time phase from 70% to 99% at 1% intervals, and (2) First, a time phase in which the right coronary artery is less blurred at 5% intervals is searched from the reconstructed image, and (3) a time phase in which the right coronary artery is least blurred at 1% intervals is then determined. (4) A diagnostic image is reconstructed using the parameters necessary for diagnosis at the determined phase.
- the present invention has been made in view of the above-described problems, and the object thereof is suitable for searching for a desired image from a plurality of types of continuous images arranged based on various physical quantities.
- a medical image display device and a medical image display method are provided.
- a first invention is a medical image display device that displays a medical image, a display unit that displays a rectangular parallelepiped object that is a set of a plurality of unit cells, and three axes of the rectangular parallelepiped object
- a display unit that displays a rectangular parallelepiped object that is a set of a plurality of unit cells, and three axes of the rectangular parallelepiped object
- a storage unit that associates and stores, an input unit that inputs a three-dimensional position in the rectangular parallelepiped object, and one or a plurality of unit lattices that are determined by a three-dimensional position that is input from the input unit
- a medical image display device comprising: a control unit that reads a plurality of images from the storage unit and controls the display unit to display the images.
- the second invention is a medical image display method executed by a medical image display device that displays a medical image, wherein the display unit displays a rectangular parallelepiped object that is a set of a plurality of unit lattices, and a storage unit
- the display unit displays a rectangular parallelepiped object that is a set of a plurality of unit lattices
- a storage unit a storage unit
- the input unit inputs a three-dimensional position in the rectangular parallelepiped object
- the control unit is determined by the three-dimensional position input from the input unit.
- a medical image display device and a medical image display method that are suitable for the operation of searching for a desired image from a plurality of types of continuous images arranged based on various physical quantities.
- the figure explaining the image displayed on the image display area 101 when the non-orthogonal cutting plane is the active plane An example of an axis setting screen 200 for performing a setting operation for associating an arbitrary physical quantity (item and quantity) with each axis of the rectangular parallelepiped object 5
- Example of mode selection screen 210 An example of a physical quantity associated with each axis of the cuboid object 5
- An example of a physical quantity associated with each axis of the cuboid object 5 in the perfusion mode An example of a physical quantity associated with each axis of the cuboid object 5 in the successive approximation reconstruction mode
- a flowchart for explaining the overall processing flow when an arbitrary physical quantity (item and quantity) is associated with each axis of the rectangular parallelepiped object 5 The figure explaining the aspect of the display size of the rectangular parallelepiped object 5 Display example of cuboi
- the medical image display apparatus 1 is a computer that performs processing such as image generation and image analysis, and includes an image viewer 100 (FIG. 2) that displays medical images.
- the medical image display device 1 is a controller that is an interface with external devices such as a CPU (Central Processing Unit) 11, a main memory 12, a storage device 13, a network adapter 14, a display memory 15, and a mouse 18.
- external devices such as a CPU (Central Processing Unit) 11, a main memory 12, a storage device 13, a network adapter 14, a display memory 15, and a mouse 18.
- input devices such as a display device 17, a mouse 18, and a keyboard 19 are provided, and each unit is connected via a bus.
- the medical image display device 1 may be configured to be connectable to the image database 3 via the network 2.
- the CPU 11 calls and executes a program stored in the storage device 13 or the like in the work memory area on the RAM of the main memory 12, and drives and controls each unit connected via the bus, and performs various operations performed by the medical image display device 1. Realize processing. For example, the program relating to the image viewer 100 described above is read from the storage device 13 and image display / search processing is executed.
- the image viewer 100 described above has a rectangular parallelepiped object 5 (see FIGS. 2 and 3), which will be described later, as a GUI (Graphical User Interface) for selecting an image to be displayed in the image display area 101.
- the CPU 11 associates successive image groups arranged based on different physical quantities with the three axes of the rectangular parallelepiped object 5, and stores this association information in the main memory 12.
- each unit grid 50 of the rectangular parallelepiped object 5 and each image included in the continuous image are associated with each other on a one-to-one basis.
- the CPU 11 accepts an operator's operation on the cuboid object 5, changes the display state of the cuboid object 5 according to the operation content, changes the medical image displayed in the predetermined image display area 101 of the image viewer 100, To do.
- Main memory 12 is composed of ROM (Read Only Memory), RAM (Random Access Memory), and the like.
- ROM Read Only Memory
- RAM Random Access Memory
- the ROM permanently holds a computer boot program, a BIOS program, data, and the like.
- the RAM temporarily holds programs, data, and the like loaded from the ROM, the storage device 13, and the like, and includes a work area used by the CPU 11 to perform various processes.
- the storage device 13 is a storage device that reads and writes data to and from an HDD (hard disk drive) and other recording media, and stores programs executed by the CPU 11, data necessary for program execution, an OS (operating system), and the like.
- a control program corresponding to the OS, an application program, a program for realizing the image viewer 100 of the present invention, and the like are stored.
- Each of these program codes is read by the CPU 11 as necessary, transferred to the RAM of the main memory 12, and executed as various means.
- the network adapter 14 includes a communication control device, a communication port, and the like, and mediates communication between the medical image display device 1 and the network 2. Further, the network adapter 14 performs communication control with the image database 3, another computer, or an image capturing apparatus such as an X-ray CT apparatus or an MRI apparatus via the network 2.
- the controller 16 is a port for connecting a peripheral device, and transmits / receives data to / from the peripheral device.
- a pointing device such as a mouse 18 or a stylus pen may be connected via the controller 16.
- the display memory 15 is a buffer that temporarily stores display data input from the CPU 11.
- the accumulated display data is output to the display device 17 at a predetermined timing.
- the display device 17 includes a display device such as a liquid crystal panel and a CRT monitor, and a logic circuit for executing display processing in cooperation with the display device, and is connected to the CPU 11 via the display memory 15.
- the display device 17 displays the display data stored in the display memory 15 under the control of the CPU 11.
- the input device is, for example, an input device such as a mouse 18 or a keyboard 19 and outputs various instructions and information input by the operator to the CPU 11.
- the operator interactively operates the medical image display device 1 using external devices such as the display device 17, the mouse 18, and the keyboard 19.
- the network 2 includes various communication networks such as a LAN (Local Area Network), a WAN (Wide Area Network), an intranet, the Internet, etc., and the communication connection between the image database 3, the server, other information devices, and the medical image display apparatus 1. Mediate.
- LAN Local Area Network
- WAN Wide Area Network
- intranet the Internet
- the image database 3 stores and stores image data captured by the image capturing device.
- the image database 3 is connected to the medical image display device 1 via the network 2, but the image database 3 may be provided in, for example, the storage device 13 in the medical image display device 1.
- the rectangular parallelepiped object 5 is a GUI provided in the image viewer 100, and supports the display and search of images.
- a rectangular parallelepiped object 5 is displayed on the display screen of the image viewer 100, an image display area 101 for displaying one or a plurality of medical images, and information on the image being displayed (subject) Information display area 102 for displaying information, examination date information, slice information, and the like.
- the rectangular parallelepiped object 5 is a set of a plurality of unit lattices (cuboid frames) 50, and each unit lattice 50 is associated with each image included in the continuous image group in a one-to-one correspondence.
- the three axes of the cuboid object 5 in the vertical, horizontal, and depth directions are respectively associated with successive image groups of medical images that are continuously arranged based on a predetermined physical quantity.
- an example of associating a continuous image group for 30 time phases (30 series) reconstructed in increments of 1% with an RR time phase of 70 to 99% in electrocardiographic synchronization with a cuboid object 5 explain.
- a continuous image group of “first time phase interval (for example, 5% time phase interval)” is associated with the first axis 5A, and “body axis direction position” is associated with the second axis 5B.
- an image at a certain body axis direction position has a time phase interval of 1% in the column direction and a time in the row direction. Phases are arranged at 5% intervals.
- the CPU 11 When an arbitrary three-dimensional position of the rectangular parallelepiped object 5 is specified by the operator, the CPU 11 reads each image associated with one or a plurality of unit cells 50 at the specified three-dimensional position from the main memory 12, and It is displayed in the display area 101. Thereby, a desired image can be easily displayed from a plurality of continuous image groups.
- the rectangular parallelepiped object 5 performs various operations such as a three-dimensional position designation operation (cursor 60 movement operation), a cursor 60 size change operation, a cursor 60 number change operation, an active surface change operation, and an axial direction change operation. Accept. Each operation is input from an input device such as a mouse 18 or a keyboard 19, and the CPU 11 changes the display state of the cuboid object 5 based on the input signal.
- a cuboid object 5 displays a cursor 60 for designating a three-dimensional position (unit cell 50). Further, on each surface 51, 52, 53, a position designation line extending in the row direction and the column direction from the position of the cursor 60 is displayed. In the following description, the position designation straight line extending in the row direction is called a row line (lines 61, 64, 66 in FIG. 5), and the position designation straight line extending in the column direction is a column line (lines 62, 63, 65 in FIG. 5). Call it. In each surface 51, 52, 53, the portion where the row line and the column line intersect is the position of the cursor 60. Since the rectangular parallelepiped object 5 is displayed in a perspective view as shown in FIG.
- the cursor position in the depth direction is also displayed on a surface (surfaces 52 and 53 in FIG. 5) other than the front surface (surface 51 in FIG. 5). It can be confirmed by referring to the position of. It is desirable to display the portion (cursor 60) where the row line and the column line intersect so that they can be distinguished from other portions by color, pattern, blinking display, or the like.
- the cursor 60 moves and displays each unit cell 50 in the rectangular parallelepiped object 5 according to the operation of the mouse 18 or the keyboard 19.
- 6A shows an example in which the position of the cursor 60 is directly specified by the mouse 18, and
- FIG. 6B shows that the column line is moved to the left or right by an arrow key operation on the keyboard 19 or a drag operation using the mouse 18.
- An example is shown.
- the CPU 11 recognizes the unit cell 50 at the position where the cursor 60 is placed as the selected cell.
- the cursor 60 it is possible to accept the change in the line width of the row line and the column line by the operation of the operator and thereby increase or decrease the number of unit lattices 50 to be collectively selected by the cursor 60.
- the CPU 11 selects the unit lattice 50 on the active surface (for example, the surface displayed on the front surface (front surface of the display screen)) as the selected lattice. . Then, the image associated with the selected grid is displayed in the image display area 101. Furthermore, by sequentially moving the active surface in the depth direction by a mouse scroll operation described later, an image associated with the unit cell 50 of each surface in the depth direction among the unit cells 50 selected by the cursor 60 is displayed. They are displayed in the display area 101 (see FIG. 10).
- Fig. 7 shows another example of how to specify the 3D position.
- FIG. 7 (A) shows an example of a method of specifying a three-dimensional position by the plate-like objects 71 and 72.
- the CPU 11 displays the cuboid object 5 in a semi-transparent display, and displays the two plate-like objects 71 and 72 orthogonal to the vertical and horizontal directions in a non-transparent manner. A portion where the plate-like objects 71 and 72 intersect is set as the position of the cursor 60.
- the plate-like object 71 extending in the horizontal direction is movable in the vertical direction and the depth direction of the cuboid object 5, and the plate-like object 72 extending in the vertical direction is movable in the horizontal direction and the depth direction of the cuboid object 5.
- the position of the cursor 60 is also moved accordingly.
- the widths of the plate-like objects 71 and 72 can be changed by an input instruction from the mouse 18 or the like.
- the operation of specifying the three-dimensional position by the column line and row line in FIG. 5 it is necessary to operate three line objects, whereas in the example of the plate objects 71 and 72 in FIG. Since the 3D position can be specified by manipulating the object, operability is good. Further, since the unit cell 50 of the rectangular parallelepiped object 5 is translucent, the visibility of the designated three-dimensional position is improved.
- the rectangular parallelepiped object 5 is made translucent, and tabs 75 are displayed along the respective axes outside the rectangular parallelepiped object 5.
- Each tab 75 displays a scale (1%, 2%, etc. if the axis represents a time interval), and the cursor 60 can be specified by specifying the position of the tab 75 scale on each axis with the mouse pointer 181, etc. Enable to specify 3D position.
- the scale of the tab 75 can be directly selected, so that the operability is improved.
- the rectangular parallelepiped object 5 is displayed in a translucent manner and the cursor 60 is displayed in a non-transparent manner so that it can be visually recognized, the visibility of the specified three-dimensional position of the cursor 60 is improved.
- a plurality of position specifying straight lines may be provided on one surface.
- two column lines 62A and 62B and two row lines 61A and 61B are provided on the surface 51 of the rectangular parallelepiped object 5 is shown.
- the four areas where the lines intersect are the cursors 60A, 60B, 60C, and 60D.
- the line in the depth direction is one line
- the line width of each line is two unit grids, so each cursor 60A, 60B, 60C, 60D has four unit grids 50 each.
- 16 unit cells 50 are selected.
- the CPU 11 displays a total of 16 images associated with the four unit cells 50 included in the four cursors 60A, 60B, 60C, and 60D in the image display area 101, respectively.
- the active surface is a selected surface of the plurality of unit cells 50 selected by the cursor 60 (may be selected three-dimensionally). For example, a surface selected as the front surface, a surface selected from surfaces parallel to the front surface, or a surface set in advance as an active surface may be used.
- CPU11 accepts an operation to switch the active surface. For example, as shown in FIG. 9, each time the mouse 18 is clicked, the rectangular parallelepiped object 5 is rotated to sequentially switch the surface displayed on the front, and the active surface is changed accordingly.
- the active surface may be moved in the depth direction of the rectangular parallelepiped object 5 by an operation of rotating the wheel of the mouse 18 or the like.
- the foreground is the active surface in the initial stage, and the mouse wheel is rotated in the direction of the axis 5B (depth direction). It shows that the active surface is moved sequentially.
- the image display area 101 has the same body axis direction as shown in FIG. 10 (B).
- Position image for example, body axis position 1.25mm
- horizontal direction time phase 5% interval 65%, 70%, 75%)
- vertical direction time phase 1% interval 65%, 66%, 67 %).
- the active surface is switched to the surface 53-2 as shown in FIG.
- Images are displayed in the horizontal direction at 5% time phase intervals (65%, 70%, 75%) and in the vertical direction at 1% time phase intervals (65%, 66%, 67%).
- the active plane may be rotated only in the direction of the axis without being changed.
- the CPU 11 displays the axial rotation GUI 55 at, for example, one corner or the vicinity of the rectangular parallelepiped object 5, and when the axial rotation GUI 55 is rotated by, for example, a mouse drag operation, the vertical and horizontal axes are switched.
- the images displayed in the image display area 101 are also rearranged according to the direction of the axis.
- the first axis 5A is the first time interval (in 5% increments)
- the second axis 5B is in the body axis direction position (in 1.25mm increments)
- the third axis 5C is the second time phase.
- a rectangular parallelepiped object 5 with an interval (in increments of 1%) is shown disassembled for explanation.
- nine unit lattices with the cursor 60 centered on the second row from the top position in the body axis direction 1.25 mm
- the seventh from the left and the third from the front (time phase 32%) It has been moved to a position including 50. That is, it is assumed that the second AC surface 53-2 from the top (orthogonal cut surface orthogonal to the second axis 5B) is designated as the active surface.
- the CPU 11 displays an image associated with the unit cell 50 selected by the cursor 60 in the image display area 101 of the image viewer 100.
- an image with a time phase (heart rate phase) of 32% is displayed at the center of the image display area 101, and images (time phases of 31% and 33%) are displayed in increments of 1% above and below it. In addition, images (time phase 27%, 37%) are displayed in 5% increments on the left and right.
- the position of the image displayed in the image display area 101 in the body axis direction corresponds to the position of the second axis 5B of the cursor 60 and is all 1.25 mm.
- the CPU 11 of the medical image display apparatus 1 reads the program and data related to the image display / search process of FIG. 13 from the main memory 12, and executes the process based on the program and data.
- tomographic image data to be calculated is fetched from the image database 3 or the like via the network 2 and the network adapter 14 and stored in the storage device 13 of the medical image display device 1. It shall be.
- the CPU 11 displays an input screen for designating a subject to be observed on the display device 17 and accepts an input of the subject by the operator (step S101).
- the CPU 11 reads out the program related to the image viewer 100 from the storage device 13 and starts it (step S102). Further, the CPU 11 acquires the image group of the subject designated in step S101 from the storage device 13 and develops it in the main memory 12 (step S103).
- the CPU 11 After that, the CPU 11 generates a continuous image group in which the image group acquired in step S103 is rearranged according to the physical quantity set for each axis of the cuboid object 5, and associates it with each axis direction of the cuboid object 5. As a result, each unit cell 50 is associated with each image included in the continuous image on a one-to-one basis (step S104).
- the CPU 11 displays the cuboid object 5 on the image viewer 100 (step S105; see FIG. 2).
- the CPU 11 receives an operation on the cuboid object 5, changes the display state of the cuboid object 5 (active plane, cursor position, line width of the position designation line, axial direction, etc.) according to the contents of the input operation, and moves the cursor
- the image associated with the unit cell 50 selected by 60 is displayed in the image display area 101 of the image viewer 100 (step S106).
- information on the displayed image is displayed in the information display area 102.
- the contents of the operation on the rectangular parallelepiped object 5 are, for example, an active surface changing operation, a cursor position moving operation, a row line / column line line width changing operation, an axial direction changing operation, etc., as described above.
- a continuous image with a time phase interval of 5% and a continuous image with a time phase interval of 1% are displayed side by side at the same time, or the body axis direction position can be set by a simple operation such as a mouse wheel scroll operation. It can be switched and displayed sequentially. As a result, since a large number of images can be confirmed simultaneously or continuously with a simple operation, the operator can easily search for an optimal image for observation.
- step S107 When an image determined to be the optimum phase by the operator is selected (step S107), the CPU 11 reconstructs an image using parameters necessary for diagnosis using the projection data of the selected phase (step S108). ).
- the medical image display device 1 of the first embodiment displays the cuboid object 5 that is a set of a plurality of unit cells 50 on the display device 17.
- the medical image display apparatus 1 has a body axis direction position, a first time phase interval (in 5% increments), and a second time phase interval smaller than the first time phase interval (in three axes of the cuboid object 5 ( 1% increments).
- the medical image display device 1 arranges images according to physical quantities associated with the respective axes, and generates a continuous image. Further, each image of the continuous image and each unit cell 50 are stored in the main memory in a one-to-one correspondence.
- the CPU 11 displays one or more unit lattices 50 determined by the input three-dimensional position. Control is performed so that one or a plurality of associated images are read from the main memory 12 and displayed in the image display area 101.
- an image reconstructed at a relatively coarse RR time interval A group and an image group reconstructed at a finer RR time phase interval are observed simultaneously, and an optimal image can be selected for each position in the body axis direction. Therefore, a desired image can be efficiently retrieved from a large number of images and displayed.
- the CPU 11 determines the surface of the rectangular parallelepiped object 5 to be displayed on the front according to the surface of the input rectangular parallelepiped object 5. Control to switch and display. Thereby, the front of the rectangular parallelepiped object 5 can be switched and displayed according to the purpose of observation. Useful for changing the active surface.
- an orthogonal cut plane orthogonal to any of the three axes of the rectangular parallelepiped object 5 is set as an active plane, and the CPU 11 displays one or a plurality of images associated with each position of the active plane in the image display area 101.
- the 3D position in the cuboid object 5 can be input using a position specification straight line (row line, column line, plate-like object, etc.).
- the CPU 11 overlaps the cuboid object 5 with the position specification straight line. indicate.
- the line width of the position designation line can be changed, and the CPU 11 controls to change the number of images displayed in the image display area 101 according to the line width of the position designation line.
- the number of images to be collectively displayed in the image display area 101 can be freely changed, so that work can be performed efficiently.
- the hardware configuration of the medical image display apparatus 1 of the second embodiment is the same as that of the medical image display apparatus 1 of the first embodiment, the duplicate description is omitted, and the same parts are denoted by the same reference numerals. To explain.
- a cross section orthogonal to any one of the three axes of the rectangular parallelepiped object 5 (hereinafter referred to as an orthogonal cutting plane) is set as an active plane and is associated with a selected lattice in the active plane.
- the active surface is not limited to the orthogonal cut surface, and may be a non-orthogonal cut surface.
- the non-orthogonal cut surface is a cut surface that is not orthogonal to any of the three axes of the rectangular parallelepiped object 5.
- Fig. 14 when performing coronary artery evaluation, as shown in Fig. 14, select the images that are most stationary (with few motion artifacts) for the right coronary artery and the left circumflex branch that are most susceptible to heart rate variability. Is desired.
- the diastole exists in a wide range of 60% to 95% of the heartbeat phase, and it is necessary to search for the optimum phase in this wide range. Further, it is not necessary to search only for one cross section, but it is necessary to search for an optimum phase at a plurality of cross-sectional positions.
- the operator first (1) arranges consecutive images arranged in the order of the body axis in 5% time increments, right coronary artery (LCA), left Look for a phase with less movement of the convoluted branch (RCA).
- LCA right coronary artery
- RCA left Look for a phase with less movement of the convoluted branch
- the LCA and RCA are both good at the cross-sectional position “3.75 mm” and the heartbeat phase “65%”, and only RCA is good at the cross-sectional position “5.00 mm” and the heartbeat phase “60%”.
- 2.50mm ", heart rate phase” 70% and only LCA is good.
- This search operation determines that the optimal phase and cross-sectional position of the RCA are the cross-sectional position “5.00 mm” and the heartbeat phase “61%”.
- the operator observed (3) continuous images arranged in order of the body axis direction position, centering on the heartbeat phase “70%” with good LCA, in increments of 1% of time phase, and the phase and cross section with good LCA. Find a location.
- the optimal phase and cross-sectional position of the LCA are the cross-sectional position “2.50 mm” and the heartbeat phase “71%”.
- the non-orthogonal cut surface 54 of the rectangular parallelepiped object 5 is set as the active surface.
- the first axis 5A of the cuboid object 5 is incremented by 1% in the time phase
- the second axis 5B is incremented by 5% in the phase
- the third axis 5C is the body axis direction position
- the AB surface 51 is displayed on the front surface. Has been.
- the CPU 11 of the medical image display device 1 is shown in FIG. 16 (B).
- a plurality of unit lattices 50 collectively designated are cut obliquely, and the unit lattice 50 on the non-orthogonal cut surface 54 is set as a selected lattice.
- the image associated with the selected grid is displayed in the image display area 101 of the image viewer 100.
- the non-orthogonal cut surface is a cross section that is parallel to the first axis 5A and non-orthogonal to the second axis 5B and the third axis 5C.
- the operator can confirm images with good RCA, good LCA, good RCA and LCA from the selected images with a minimum of one cursor 60 movement operation.
- the non-orthogonal cross section of the rectangular parallelepiped object 5 is an active surface, if there are a plurality of points of interest, both can be confirmed simultaneously, and the efficiency is further improved.
- each of the three axes of the rectangular parallelepiped object has a body axis direction position, a first time phase interval (for example, a time phase interval of 5%), and a second time phase interval (for example, a time phase of 1%).
- a first time phase interval for example, a time phase interval of 5%
- a second time phase interval for example, a time phase of 1%.
- the physical quantity associated with each axis is not limited to this, and the operator may associate an arbitrary physical quantity.
- the medical image display apparatus 1 performs a physical quantity setting process (hereinafter referred to as an axis setting process) of a continuous image group associated with the three axes of the rectangular parallelepiped object 5.
- an axis setting process the CPU 11 of the medical image display device 1 displays the axis setting screen 200 on the display device 17 and accepts input of physical quantities of a continuous image group associated with each axis.
- Fig. 18 shows an example of the axis setting screen 200.
- the axis setting screen 200 includes, for example, input fields 201 of physical quantity items and quantities (steps) corresponding to the first axis 5A, the second axis 5B, and the third axis 5C of the cuboid object 5.
- ⁇ 206 are provided.
- the operator when applying to the optimum cardiac phase search, the operator inputs “image position” in the item input field 201 of the first axis, “1.25 mm” in the amount input field 202, the second Enter “Heartbeat phase” in the axis item input field 203, “1%” in the amount input field 204, “Heartbeat phase” in the item input field 205 on the third axis, and “5%” in the amount input field 206.
- the CPU 11 associates each unit cell 50 in the first axis direction of the cuboid object 5 with a continuous image at a body axis direction position of 1.25 mm, and each unit cell 50 in the second axis direction has a heartbeat phase in 1% increments (time phase).
- a rectangular parallelepiped object 5 is generated in which continuous images at 1% intervals are associated with each other and unit images 50 in the third axis direction are associated with continuous images at intervals of 5% of the heartbeat phase (time interval of 5%).
- a list of settable items may be displayed in a pull-down menu format.
- frequently used combinations of axis settings may be held and displayed on the display device 17 as a mode selection screen 210 as shown in FIG.
- the mode selection screen 210 shown in FIG. 19 includes buttons such as “optimal cardiac phase search” mode 211, “filter” mode 212, “perfusion” mode 213, “sequential approximation reconstruction” mode 214, arbitrary setting mode 215, etc. Is displayed.
- the “optimal cardiac phase search” mode 211 is applied to an electrocardiogram-synchronized image as in the first embodiment, and “body axis direction position”, “ This is a mode that associates the “1 time phase interval” and the “second time phase interval”.
- FIG. 20 (A) it is applied to an electrocardiogram-synchronized image, and “body axis direction position”, “time phase interval”, and “shooting date” for the three axes of the rectangular parallelepiped object 5, respectively. May be associated with each other.
- the “filter” mode 212 is a mode applied when there are a plurality of groups of filter processes with different viewpoints such as a reconstruction filter and an image filter. It is used when arranging images at positions in the body axis direction in order of the degree (degree of application) of each filter for a plurality of types of filters included in each group. For example, it is used when applying repetitive adaptive noise reduction processing in CT image reconstruction.
- “image position”, “first filter group”, and “second filter group” are defined as three-axis physical quantities.
- first filter group and the second filter group a plurality of types of filters are defined for each part (head, chest, abdomen, etc.) and desired image quality (smooth, normal, sharp, etc.).
- the filter of the first filter group and the filter of the second filter group are filters from different viewpoints, and can be applied simultaneously.
- the CPU 11 moves the image of the same filter (for example, “+1”) in the second filter group in the horizontal direction. Images are displayed in the order of the filter number of the first filter group and in the order of the body axis direction position in the vertical direction. The operator can confirm each filter of the second filter group at a time while comparing the degree of application of each filter of the first filter group for each position in the body axis direction.
- the CPU 11 performs the horizontal direction on the image of the same filter (for example, “head standard”) of the first filter group.
- the images are displayed in the order of the filter number of the second filter group and in the order of the body axis direction position in the vertical direction. The operator can confirm at a time for each filter of the first filter group while comparing the degree of filter application of the second filter group by body axis direction position.
- the “perfusion” mode 213 is a mode applied in image diagnosis (perfusion) in which the blood flow in the brain is measured by CT images.
- the CBF of the functional image shown in FIG. 22 is “an image showing cerebral blood flow”
- CBV is an “image showing cerebral blood volume”
- MTT is an “image showing the average passage time of blood”.
- image position (cross section)”, “time”, and “type of functional image” are associated with each axis of the cuboid object 5.
- the “successive approximation reconstruction” mode 214 means “the number of iterations of processing in the successive approximation reconstruction” and “the degree (intensity) of noise reduction processing” for each axis of the cuboid object 5, respectively. , A mode for associating “image position”.
- the arbitrary setting mode 215 is a mode in which an operator arbitrarily determines a physical quantity to be set for each axis.
- the axis setting screen 200 shown in FIG. 18 is displayed, and the physical quantity of the continuous image is associated with each axis according to the items and amounts arbitrarily input on the axis setting screen.
- FIG. 24 is a flowchart for explaining a series of flow from the execution of inspection to image analysis.
- step S201 when a CT examination or the like using an X-ray CT apparatus is first performed, a captured image, subject information, and the like are registered in the image database 3 (step S201).
- the operator selects an examined subject (step S202).
- the CPU 11 may display an input screen for designating the subject to be observed on the display device 17 so as to accept the input of the subject by the operator.
- the CPU 11 reads the program related to the image viewer 100 from the storage device 13 and starts it (step S203).
- the CPU 11 acquires the image group of the subject designated in step S202 from the storage device 13 and develops it in the main memory 12 (step S204).
- the rectangular parallelepiped object creation screen includes, for example, a mode selection screen 210 shown in FIG. 19 and an axis setting screen 200 shown in FIG.
- the CPU 11 sets the physical quantity to be set for each axis of the rectangular parallelepiped object 5 (step S206).
- the CPU 11 creates the cuboid object 5 based on the physical quantity of each axis of the cuboid object 5 set in step S206 (step S207). That is, the image group acquired in step S204 is rearranged based on the physical quantity set for each axis of the cuboid object 5, a continuous image group is generated, and is associated with each axis direction of the cuboid object 5. As a result, each unit cell 50 is associated with each image included in the continuous image on a one-to-one basis (step S207). The CPU 11 displays the cuboid object 5 on the image viewer 100 (step S208).
- the CPU 11 accepts an operation on the cuboid object 5, changes the display state of the cuboid object 5 (active plane, cursor position, row line and column line width, axial direction) according to the contents of the input operation,
- An image associated with the unit cell 50 selected by the cursor 60 is displayed in the image display area 101 of the image viewer 100 (step S209).
- information on the displayed image is displayed in the information display area 102.
- the contents of the operation on the rectangular parallelepiped object 5 are, for example, an active surface changing operation, a cursor position moving operation, a row line / column line line width changing operation, an axial direction changing operation, etc., as described above.
- the active surface may be an orthogonal cut surface of the rectangular parallelepiped object 5 or a non-orthogonal cut surface.
- step S210 When an image determined to be analyzed by the operator in the process of step S209 is selected (step S210), the CPU 11 performs an analysis process based on the selected image (step S211).
- an arbitrary physical quantity can be associated with each axis of the rectangular parallelepiped object 5 by the medical image display apparatus 1 according to the third embodiment.
- the image search using the rectangular parallelepiped object 5 can be applied to various image processing, and the practicality is improved.
- the size of the unit cell 50 of the cuboid object 5 or the size of the cuboid object 5 itself may be changed as appropriate.
- the size of the unit cell 50 constituting the rectangular parallelepiped object 5 may be changed in accordance with image information.
- the body axis direction position is set on the third axis 5C of the rectangular parallelepiped object 5
- the length of the side in the third axis direction of the unit cell 50 is also set to a length corresponding to the image thickness, the rectangular parallelepiped object 5 is just seen at a glance. This makes it easier to visualize the image thickness.
- the size of the rectangular parallelepiped object 5 itself may be changed according to the amount of the image.
- the body axis direction position is set on the 3rd axis 5C of the rectangular parallelepiped object 5, if there are three images with the same image thickness, three of the unit cell 50, if there are five, five of the unit cell 50
- a rectangular parallelepiped object 5 may be created as a minute.
- the step size of the unit cell 50 of each axis may be changed according to the display space of the rectangular parallelepiped object 5. For example, when the display space of the rectangular parallelepiped object 5 is narrow in the vertical direction, the step size of the unit cell 50 is increased with respect to the vertical axis. Specifically, the time interval, which is set to 5%, is changed to 10%.
- the display format of the rectangular parallelepiped object 5 and the image display area 101 of the image viewer 100 may be appropriately changed according to the presence or absence of an image.
- each image is associated with each unit grid 50 of the rectangular parallelepiped object 5
- a part with an image and a part without the image The unit cell 50 has a different color, pattern, and the like.
- an area including the unit cell 50 without an image is designated by the cursor 60
- the CPU 11 displays the image of the selected lattice in the image display region 101
- the unit cell 50 without an image is displayed as a blank. do it.
- the shape of the rectangular parallelepiped object 5 is not limited to a rectangular parallelepiped, and may be other shapes.
- a shape obtained by combining a plurality of rectangular parallelepipeds, a sphere, or other three-dimensional shapes may be used.
- 1 medical image display device 11 CPU, 12 main memory, 13 storage device, 14 network adapter, 15 display memory, 16 controller, 17 display device, 18 mouse, 19 keyboard, 2 network, 3 image database, 100 image viewer, 101 Image display area, 102 Information display area, 5 cuboid object, 5A 1st axis, 5B 2nd axis, 5C 3rd axis, 51 AB plane (orthogonal cutting plane), 52 BC plane (orthogonal cutting plane), 53 AC plane ( (Orthogonal cut plane), 61, 64, 66 Position designation straight line (row line), 62, 63, 65 Position designation straight line (column line), 71, 72 Plate object, 54 Non-orthogonal cut plane, 55 GUI for axial rotation , 200 axis setting screen, 210 mode selection screen
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Abstract
Description
まず、図1を参照して、第1の実施形態の医用画像表示装置1の構成について説明する。
次に、図14~図17を参照して本発明の第2の実施形態について説明する。
次に、本発明の医用画像表示装置1の第3の実施形態について説明する。
直方体オブジェクト作成画面には、例えば図19に示すモード選択画面210や図18に示す軸設定画面200が含まれる。
Claims (13)
- 医用画像を表示する医用画像表示装置であって、
複数の単位格子の集合である直方体オブジェクトを表示する表示部と、
前記直方体オブジェクトの3軸の各方向に対して、所定の物理量に従って連続して並べられている前記医用画像の連続画像群をそれぞれ対応付けることにより、前記連続画像群に含まれる各画像と各単位格子とを1対1に対応付けて記憶する記憶部と、
前記直方体オブジェクト内の3次元位置を入力する入力部と、
前記入力部から入力される3次元位置によって定まる1又は複数の単位格子に対応付けられている1又は複数の画像を前記記憶部から読み出し、前記表示部に表示するように制御する制御部と、
を備える医用画像表示装置。 - 前記入力部は、前記直方体オブジェクト内の3次元位置を、位置指定直線を用いて入力し、
前記制御部は、前記表示部が前記直方体オブジェクトに重ねて前記位置指定直線を表示するように制御する
請求項1に記載の医用画像表示装置。 - 前記入力部は、前記位置指定直線の線幅を入力し、
前記制御部は、前記入力部により入力される前記位置指定直線の線幅に応じて、前記表示部が表示する画像数を変更するように制御する
請求項2に記載の医用画像表示装置。 - 前記入力部は、前記表示部が正面に表示する前記直方体オブジェクトの面を入力し、
前記制御部は、前記入力部によって入力される前記直方体オブジェクトの面に応じて、前記表示部が正面に表示する前記直方体オブジェクトの面を切り替えて表示するように制御する
請求項1に記載の医用画像表示装置。 - 前記入力部は、前記直方体オブジェクトの3軸のいずれかに対応付ける1又は複数の前記連続画像群の物理量を入力し、
前記制御部は、前記入力部によって入力される1又は複数の前記物理量に応じて、前記記憶部が各単位格子と1対1に対応付けて記憶する前記連続画像群を変更するように制御する
請求項1に記載の医用画像表示装置。 - 前記入力部は、前記直方体オブジェクトの3軸のいずれかに直交する1又は複数の直交切断面を入力し、
前記制御部は、前記入力部によって入力される1又は複数の前記直交切断面に応じて、前記表示部が前記直交切断面の各位置に対応付けられている1又は複数の画像を表示するように制御する
請求項1に記載の医用画像表示装置。 - 前記入力部は、前記直方体オブジェクトの3軸のいずれにも直交しない1又は複数の非直交切断面を入力し、
前記制御部は、前記入力部によって入力される1又は複数の前記非直交切断面に応じて、前記表示部が前記非直交切断面の各位置に対応付けられている1又は複数の画像を表示するように制御する
請求項1に記載の医用画像表示装置。 - 前記医用画像は、心電同期再構成処理に用いられる画像であり、
前記入力部によって入力される3つの前記物理量は、体軸方向の位置、第1の時相間隔、及び前記第1の時相間隔よりも狭い第2の時相間隔、である
請求項1に記載の医用画像表示装置。 - 前記入力部は、前記表示部に複数の画像が表示されるとき、各画像の表示位置を定める縦軸と横軸との入れ替えを入力し、
前記制御部は、前記入力部により入力される縦軸と横軸との入れ替えに合わせて、前記表示部に表示される各画像を並べ替えるように制御する
請求項1に記載の医用画像表示装置。 - 前記制御部は、前記単位格子に対応する画像がある部分とない部分とで、前記単位格子の色または模様を異なるものとするように制御する
請求項1に記載の医用画像表示装置。 - 前記制御部は、前記入力部から入力される3次元位置によって定まる複数の単位格子に対応付けられている複数の画像を前記表示部に表示する際、画像が対応付けられていない単位格子に対応する表示位置についてはブランク表示するように制御する
請求項10に記載の医用画像表示装置。 - 前記制御部は、前記直方体オブジェクトに重ねて表示される前記位置指定直線の色または模様を、前記単位格子に対応する画像がある部分とない部分とで異なるものとするように制御する
請求項2に記載の医用画像表示装置。 - 医用画像を表示する医用画像表示装置が実行する医用画像表示方法であって、
表示部が、複数の単位格子の集合である直方体オブジェクトを表示するステップと、
記憶部が、前記直方体オブジェクトの3軸の各方向に対して、所定の物理量に従って連続して並べられている前記医用画像の連続画像群をそれぞれ対応付けることにより、前記連続画像群に含まれる各画像と各単位格子とを1対1に対応付けて記憶するステップと、
入力部が、前記直方体オブジェクト内の3次元位置を入力するステップと、
制御部が、前記入力部から入力される3次元位置によって定まる1又は複数の単位格子に対応付けられている1又は複数の画像を前記記憶部から読み出し、前記表示部に表示するように制御するステップと、
を含む医用画像表示方法。
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CN201380007549.7A CN104105442B (zh) | 2012-03-01 | 2013-02-27 | 医用图像显示装置及医用图像显示方法 |
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Cited By (3)
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JP2015167633A (ja) * | 2014-03-05 | 2015-09-28 | 株式会社東芝 | 医用画像処理装置及び医用画像診断装置 |
CN107155295A (zh) * | 2014-11-03 | 2017-09-12 | 三星电子株式会社 | 医学成像设备和处理医学图像的方法 |
JP6786008B1 (ja) * | 2019-08-02 | 2020-11-18 | 三菱電機株式会社 | 表示制御装置および表示制御方法 |
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JP6840481B2 (ja) * | 2016-07-19 | 2021-03-10 | キヤノン株式会社 | 画像処理装置および画像処理方法 |
KR101970989B1 (ko) * | 2017-08-03 | 2019-08-13 | 오스템임플란트 주식회사 | 치과용 ct 영상을 위한 필터 적용 방법 및 시스템 |
US20210049794A1 (en) * | 2018-01-31 | 2021-02-18 | Mitos Gmbh | Method for image reconstruction of an object, in particular based on computed-tomography image reconstruction, and apparatus, system and computer program product for the same |
JP2021078824A (ja) * | 2019-11-20 | 2021-05-27 | キヤノンメディカルシステムズ株式会社 | X線診断装置 |
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USD959447S1 (en) | 2019-12-20 | 2022-08-02 | Sap Se | Display system or portion thereof with a virtual three-dimensional animated graphical user interface |
CN112700487B (zh) * | 2020-12-31 | 2023-09-15 | 正雅齿科科技(上海)有限公司 | 一种头颅侧位片中测量标尺刻度获取方法及系统 |
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Also Published As
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US9542744B2 (en) | 2017-01-10 |
US20150015572A1 (en) | 2015-01-15 |
JPWO2013129448A1 (ja) | 2015-07-30 |
CN104105442A (zh) | 2014-10-15 |
JP6046111B2 (ja) | 2016-12-14 |
CN104105442B (zh) | 2016-01-20 |
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