JP2014046122A - Medical image display apparatus, and medical image diagnostic system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical image display apparatus and a medical image diagnostic system, capable of easily knowing in which direction cross-section a tomogram is captured for a subject, by moving the tomogram according to the movement of an image display device on which the tomogram of the subject is displayed.SOLUTION: A medical image display apparatus (100) is a portable image display apparatus capable of displaying an image on an image display part (130) and being moved and tilted to an optional position by an operator (10). The medical image display apparatus includes: an image data storage part (110) for storing image data of a three-dimensional image of the interior of a subject; a position detecting part (140) for detecting a travel amount and a tilt amount of the moved portable image display apparatus; and an image reconstruction part (120) for reconstructing a tomogram according to the travel amount and the tilt amount. The image display part displays the tomogram reconstructed by the image reconstruction part.

Description

  The present invention relates to a medical image display device that displays a tomographic image in a subject and a medical image diagnostic system including the medical image display device.

  In a medical image diagnostic apparatus such as an ultrasonic diagnostic apparatus, a tomographic image of an organ or the like in a subject can be viewed without damaging the subject. Such a tomogram is displayed on a fixed screen display unit attached to the medical image diagnostic apparatus. However, in some cases, it is difficult to determine which part of the subject is displayed in these tomographic images.

  For example, Patent Document 1 displays a tomographic image of an organ or the like on a fixed screen display unit such as a monitor, and uses a schematic diagram to indicate which position of the organ or the like corresponds to the tomographic image. Displayed on the screen of the fixed screen display.

JP 2012-100815 A

  However, in Patent Document 1, the fixed screen display unit is substantially fixed, and an image displayed on the fixed screen display unit is rotated on the screen when an arbitrary cross section is viewed. For this reason, the operator has no choice but to image in which direction the cross-section of the tomogram is relative to the subject, and in particular for a novice operator, in which direction the cross-section of the tomogram is relative to the subject. There were cases where I could not understand.

  In the present invention, the tomographic image is also moved in accordance with the movement of the image display device on which the tomographic image of the subject is displayed, so that the medical image display can easily know which direction the tomographic image is in relation to the subject. An object is to provide an apparatus and a medical image diagnostic system.

  A medical image display apparatus according to a first aspect is a portable image display apparatus that displays an image on an image display unit and can be moved and tilted to an arbitrary position by an operator. The medical image display device includes an image data storage unit that stores image data of a three-dimensional image in the subject, a position detection unit that detects a movement amount and a tilt amount of the portable image display device, and a movement An image reconstruction unit configured to reconstruct a tomographic image corresponding to the amount and the inclination amount. The image display unit displays the tomographic image reconstructed by the image reconstruction unit.

  In the first aspect, the medical image display apparatus according to the second aspect includes an initial coordinate setting unit that sets the center position of the three-dimensional image as the initial position of the portable image display apparatus. The image reconstruction unit reconstructs a tomographic image according to the movement amount and the tilt amount from the initial position.

  In the medical image display apparatus according to the third aspect, in the second aspect, before the initial position of the portable image display unit is set by the initial coordinate setting unit, the image reconstruction unit is perpendicular to the body axis direction of the subject. A tomographic image that is cross-sectional and passes through the center position is reconstructed, and a portable image display unit displays the tomographic image that passes through the center position.

  According to a fourth aspect of the medical image display apparatus according to any one of the first aspect to the third aspect, the image display unit displays a first display screen for displaying a tomogram, a first outline screen for a whole outline frame and an outline frame of a three-dimensional image. And a second display screen for displaying the position of the tomographic image displayed on the screen.

  The medical image display apparatus according to a fifth aspect is the medical image display apparatus according to the first to third aspects, wherein the image display unit displays a first display screen on which a tomogram is displayed, and a start end or end of a three-dimensional image in the body axis direction of the subject. And a second display screen showing the distance between the part and the position of the tomographic image.

  A medical image diagnosis system according to a sixth aspect is a medical image diagnosis that is any one of an X-ray diagnosis apparatus, an X-ray CT (Computed Tomography) apparatus, a nuclear medicine diagnosis apparatus, an ultrasonic diagnosis apparatus, or an MRI (magnetic resonance imaging) apparatus. And a medical image display device according to any one of the first to fifth aspects, and image data is generated based on data acquired by the medical image diagnostic apparatus.

  A medical image diagnostic system according to a seventh aspect includes, in the sixth aspect, a medical image diagnostic apparatus including a transducer that transmits an ultrasonic wave to a subject and receives an echo signal from the subject, and a coordinate position sensor that detects a coordinate position. Image data having a transmission / reception probe and stored in the image data storage unit is generated based on the echo signal and the coordinate position of the transmission / reception probe.

  In the seventh aspect, the medical image diagnostic system according to the eighth aspect includes a drive unit that causes the transmission / reception probe to drive in a direction orthogonal to the transducer, and a drive amount sensor that detects the drive amount by which the drive unit drives the transducer.

  A medical image diagnostic system according to a ninth aspect includes, in the seventh aspect and the eighth aspect, a fixed screen display unit that displays an image and is fixed at a predetermined position, and a transmission / reception probe guides a puncture needle to a subject. The fixed screen display unit displays a tomographic image including the puncture needle.

  According to the medical image display device and the medical image diagnostic system of the present invention, it is possible to easily know in which direction the cross section of the tomographic image is relative to the subject.

FIG. 3 is a diagram showing a state where an operator 10 observes a tomographic image of a subject 20 using a medical image display apparatus 100. 1 is a plan view of a medical image display device 100. FIG. (A) is a perspective view of the three-dimensional image 151 and the tomographic plane 152. FIG. FIG. 3B is a plan view of the tomographic image 153 in FIG. (C) is a perspective view of the three-dimensional image 151 and the tomographic plane 152. FIG. 3D is a plan view of the tomographic image 153 in FIG. FIG. 3 is a diagram for illustrating a relationship among a medical image display apparatus 100, a three-dimensional image 151, and a tomographic plane 152. (A) is a diagram showing an operator 10 who performs coordinate setting, a medical image display device 100, a three-dimensional image 151, and a tomographic plane 152. (B) is a diagram showing the relationship between the medical image display device 100 moved to the back or front after the coordinate setting and the tomographic plane 152 displayed on the first display screen 131. (C) is a diagram showing the relationship between the medical image display device 100 rotated after the coordinates are set and the tomographic plane 152 displayed on the first display screen 131. It is the figure which showed the operator 10, the medical image display apparatus 100, the three-dimensional image 151, and the tomographic plane 152 which perform coordinate setting. 1 is a diagram illustrating a relationship between an ultrasonic diagnostic apparatus 200 and a medical image display apparatus 100. FIG. FIG. 3 is a flowchart showing a series of flows from acquiring data from a subject 20 using an ultrasonic diagnostic apparatus 200 to displaying the data on a medical image diagnostic apparatus 100. 2 is a diagram illustrating a relationship between an ultrasonic diagnostic apparatus 300 and a medical image display apparatus 100. FIG. (A) is a schematic perspective view of the three-dimensional transmission / reception probe 320a. (B) is a schematic perspective view of the three-dimensional transmission / reception probe 320b.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the drawings. It should be noted that the scope of the present invention is not limited to these forms unless otherwise specified in the following description.

(First embodiment)
<Configuration of Medical Image Display Device 100>
FIG. 1 is a diagram showing a state in which the operator 10 observes a tomographic image of the subject 20 using the medical image display device 100. A configuration diagram of the medical image display apparatus 100 is shown on the right side of FIG. In FIG. 1, the subject 20 is sleeping on the bed 30, and the operator 10 observes a tomographic image of the organ of the subject 20 using the medical image display device 100. In the following description, the body axis direction of the subject 20 is described as the Z-axis direction, the vertically upper direction of the subject 20 is defined as the Y-axis direction, and the Z-axis direction and the direction perpendicular to the Y-axis direction are described as the X-axis direction.

  The medical image display apparatus 100 can be carried by the operator 10 and includes an image data storage unit 110, an image reconstruction unit 120, an image display unit 130, and a position detection unit 140. The image data storage unit 110 stores image data of a three-dimensional image acquired by a medical image diagnostic apparatus such as an ultrasonic diagnostic apparatus. Further, the position detection unit 140 detects the three-dimensional coordinate position and inclination of the medical image display apparatus 100. The position detection unit 140 is, for example, a magnetic sensor, and is installed in a room where the medical image display apparatus 100 is used. The position detection unit 140 receives the magnetic field of the magnetic field source 40 that generates a magnetic field and receives the three-dimensional coordinate position and inclination of the medical image display apparatus 100. Measure. The image reconstruction unit 120 causes the image display unit 130 to display a tomographic image of an arbitrary cross section, that is, image data of a two-dimensional image, based on the image data of the three-dimensional image stored in the image data storage unit 110. The image display unit 130 displays a tomographic image corresponding to the amount of movement of the medical image display device 100 and the amount of inclination tilted from the initial position of the medical image display device 100.

  Although the magnetic sensor has been described as an example of the position detection unit 140, the position detection unit 140 may be formed by combining a magnetic sensor and an acceleration sensor. Further, an acceleration sensor in the X, Y, and Z axis directions may be formed and used without the magnetic field source 40. Further, FIG. 1 shows the case where the subject 20 is present, but the medical image display apparatus 100 stores the image data of the three-dimensional image of the subject 20 in the image data storage unit 110, so that the subject 20 It can be used in places where the examiner 20 is not present. The use of only the medical image display apparatus 100 can be used to educate new doctors and engineers, for example, because it is possible to physically grasp what kind of image the cross-section of the subject looks like. be able to.

FIG. 2 is a plan view of the medical image display apparatus 100. The image display unit 130 of the medical image display apparatus 100 can be configured by two screens, for example, a first display screen 131 and a second display screen 132. FIG. 2 shows an example in which the second display screen 132 is displayed so as to overlap the first display screen 131. On the first display screen 131, a tomographic image 153 of the subject 20 is displayed. Further, the second display screen 132 shows a contour frame of the three-dimensional image 151 acquired by the medical image diagnostic apparatus and a tomographic plane 152 displayed so as to cut the three-dimensional image 151. The tomographic plane 152 is a plane for understanding which section of the three-dimensional image 151 is displayed on the first display screen 131.
That is, the tomographic image 153 displayed on the first display screen 131 is a cross-section of the three-dimensional image 151 cut by the tomographic plane 152, and the second display screen 132 is the tomographic image 153 displayed on the first display screen 131 is tertiary. This is a screen for indicating which cross section of the original image 151.

  In the lower right of the first display screen 131, information such as the coordinate axes indicated by the tomographic image 153 and the distances from the tomographic image 153 to the + Z axis side and −Z axis side ends of the three-dimensional image 151 are shown. Yes. In FIG. 2, since the body axis direction of the three-dimensional image 151 is 200 mm and the tomographic plane 152 is in the center of the body axis direction of the three-dimensional image 151, “−Z: 100 mm” and “+ Z: 100 mm” are displayed. Has been. When the medical image display apparatus 100 is moved in the body axis direction by indicating the distance between the start or end portion in the body axis direction (Z-axis direction) of the subject 20 and the position of the tomographic image 153 The tomographic image 153 is prevented from suddenly disappearing from the screen in a state not intended by the operator 10. Such information may be shown on the second display screen 132.

  In particular, although not shown, the position of the second display screen 132 may be changed, or the second display screen 132 may be enlarged, reduced, or deleted. Furthermore, a new third display screen or the like may be created.

  An initial coordinate setting unit 133 is arranged below the image display unit 130. The initial coordinate setting unit 133 is a push button used when the coordinate system of the three-dimensional image 151 and the coordinate system of the tomographic plane 152 are matched. The initial coordinate setting unit 133 may be a button displayed on the image display unit 130. Details of the initial coordinate setting unit 133 will be described with reference to FIG.

  FIG. 3A is a perspective view of the three-dimensional image 151 and the tomographic plane 152. A three-dimensional image 151 shown in FIG. 3A is a three-dimensional image acquired by, for example, an ultrasonic diagnostic apparatus, and has a frustum shape that is surrounded by a sector. In FIG. 3A, a rectangular tomographic plane 152 that cuts the three-dimensional image 151 is shown. In the following description, the coordinate system of the tomographic plane 152 is defined as: the direction parallel to the long side of the tomographic plane 152 is the X′-axis direction, and the direction parallel to the short side is the Y′-axis direction, X′-axis direction, and Y′-axis direction. A direction perpendicular to the Z ′ axis direction will be described.

  In FIG. 3A, the X-axis, Y-axis, and Z-axis that are the coordinate system of the three-dimensional image 151 and the X′-axis, Y′-axis, and Z′-axis that are the coordinate system of the tomographic plane 152 are parallel to each other. is there. The tomographic plane 152 includes the center position 154 of the three-dimensional image 151. The center position 154 is a point that becomes the center of the three-dimensional image 151, and can be defined as, for example, a coordinate position that is an intermediate value of each width in the X-axis direction, the Y-axis direction, and the Z-axis direction of the three-dimensional image 151. . In FIG. 3A, the subject 155 having a shape (ellipsoid) extending in the Z-axis direction is shown in the three-dimensional image 151, and the tomographic plane 152 is arranged so as to cut the subject 155. ing. The subject 155 is an organ of the subject 20, for example.

  FIG. 3B is a plan view of the tomographic image 153 in FIG. FIG. 3B is a diagram shown on the first display screen 131, for example. When the tomographic image 153 in FIG. 3A is displayed on the first display screen 131, the tomographic image 153 shown on the first display screen 131 by the operator 10 indicates the tomographic image in which direction of the subject 20. The image reconstruction unit 120 converts the coordinate system of the tomographic plane 152 into the coordinate system of the three-dimensional image 151 as shown in FIG. 3B so that the image can be easily grasped. In FIG. 3B, since the cross section of the XY plane of the three-dimensional image 151 is shown, the subject 155 is displayed in a circle.

  FIG. 3C is a perspective view of the three-dimensional image 151 and the tomographic plane 152. In FIG. 3C, the tomographic plane 152 is disposed so as to cut the three-dimensional image 151 and the subject 155 along the XZ plane. In FIG. 3C, the + X′-axis direction coincides with the + X-axis direction, the + Y′-axis direction coincides with the + Z-axis direction, and the + Z′-axis direction coincides with the −Y-axis direction.

  FIG. 3D is a plan view of the tomographic image 153 in FIG. The image reconstruction unit 120 converts the coordinate system of the tomographic plane 152 into the coordinate system of the three-dimensional image 151 as shown in FIG. In FIG. 3D, since the cross section of the three-dimensional image 151 in the XZ plane is shown, the tomographic image 153 is rectangular and the subject 155 is shown as an ellipse extending in the Z-axis direction.

<Display of tomographic image by medical image display apparatus 100>
FIG. 4 is a diagram for illustrating a relationship among the medical image display device 100, the three-dimensional image 151, and the tomographic plane 152. FIG. 4 shows a state where the operator 10 is operating the medical image display device 100 to observe the tomographic image 153 of the three-dimensional image 151. Further, the three-dimensional image 151 and the tomographic plane 152 shown in FIG. 4 are imaginary views for explanation. The three-dimensional image 151 and the tomographic plane 152 shown in FIG. 4 are shown in the same state as in FIG. That is, the tomographic plane 152 includes the center position 154, and the X, Y, and Z axis directions coincide with the X ′, Y ′, and Z ′ axis directions, respectively.

  An arbitrary cross section of the three-dimensional image 151 is displayed on the first display screen 131 of the medical image display apparatus 100. In this case, the coordinates of the image displayed on the first display screen 131 are always + Y′-axis direction above the first display screen 131, + X′-axis direction on the left side, and + Z′-axis vertical direction of the first display screen 131. Set to direction. Here, when the tomographic image 153 is displayed on the first display screen 131, the image reconstruction unit 120 displays the coordinate system (X, Y, Z, as shown in FIGS. 3B and 3D). ). In conjunction with the movement of the medical image display apparatus 100, the tomographic plane 152 moves relative to the fixed three-dimensional image 151. Therefore, the tomographic image 153 displayed on the first display screen 131 changes in conjunction with the movement of the medical image display apparatus 100.

  The movement of the medical image display apparatus 100 is in six-degree-of-freedom directions (X, Y, Z, θX, θY, and θZ). For example, when the medical image display apparatus 100 is moved in the X′-axis direction, the Y′-axis direction, and the Z′-axis direction of the first display screen 131, the tomographic plane 152 is also interlocked with the movement of the medical image display apparatus 100. Move in the X-axis direction, Y-axis direction, and Z-axis direction, respectively. For example, when the medical image display apparatus 100 is translated in the left direction of the operator 10 (X′-axis direction of the first display screen 131) (arrow 164a), the tomographic plane 152 is also linked to the three-dimensional image 151. To the + X axis direction (arrow 164b). At this time, since the three-dimensional image 151 does not move, as a result, the tomographic image 153 moves to the right with respect to the tomographic plane 152, and the tomographic image 153 also appears on the −X ′ axis on the first display screen 131. Will move in the direction.

  When the medical image display apparatus 100 is rotated left and right (arrow 162a), the tomographic plane 152 rotates around the Y axis passing through the center position 154 (θY: arrow 162b). As a result, the tomographic image 153 displayed on the first display screen 131 is also displayed as a tomographic image 153 rotated around the Y axis passing through the center position 154 in conjunction with the movement of the medical image display apparatus 100. In addition, when the medical image display apparatus 100 is rotated back and forth around the X ′ axis of the first display screen 131 (θX: arrow 161a), the medical image display apparatus 100 is rotated counterclockwise like a handle around the Z ′ axis. When it is made (arrow 163a), the tomographic plane 152 also rotates around the X axis passing through the center position 154 (arrow 161b) and rotates around the Z axis passing through the center position 154 (arrow 163b). Therefore, the tomographic image 153 displayed on the first display screen 131 also displays the tomographic image 153 rotated around the X axis and the Z axis passing through the center position 154 in conjunction with the movement of the medical image display apparatus 100.

<Coordinate setting by the image reconstruction unit 120>
Before using the medical image display apparatus 100, the coordinate system (X, Y, Z) of the three-dimensional image 151 and the coordinate system (X ′, Y ′, Z ′) of the tomographic plane 152 are associated with each other. Set up. The coordinates can be set by, for example, pressing the initial coordinate setting unit 133 (see FIG. 2) while the operator 10 holds the medical image display device 100. The relationship between the medical image display device 100 and the tomographic plane 152 after coordinate setting and coordinate setting will be described below.

  FIG. 5A is a diagram showing the operator 10 who performs coordinate setting, the medical image display device 100, the three-dimensional image 151, and the tomographic plane 152. The operator 10 holding the medical image display device 100 is shown on the left side of FIG. 5A, and the coordinate system (X, Y, Z) of the operator 10 and the coordinate system (X ′, X) of the first display screen 131 are shown. Y ′, Z ′). Further, a three-dimensional image 151 and a tomographic plane 152 are shown on the right side of FIG. 5A, and the coordinate system (X, Y, Z) of the three-dimensional image 151 and the coordinate system (X ′, Y ′, Z ′).

  In FIG. 5A, the operator 10 faces in the −X axis direction as in FIG. 1, and holds the medical image display apparatus 100 in a state inclined by θ ° from the + Y axis direction to the −X axis direction. . Therefore, the relationship between the coordinate system (X ′, Y ′, Z ′) that is the coordinate system of the first display screen 131 and the coordinate system (X, Y, Z) that is the coordinate system of the operator 10 is the + Z-axis direction. And the + X′-axis direction coincide with each other, and the + Y′-axis direction is a direction rotated from the + Y-axis direction by θ ° about the Z-axis in the −X-axis direction. Similarly to FIGS. 3A and 4, the tomographic plane 152 is arranged parallel to the XY plane with the center position 154 as the center of the tomographic plane 152. For example, the image reconstruction unit 120 sets the first display screen 131 so that a cross section on the tomographic plane 152 shown in FIG. 5A is displayed on the first display screen 131 before the coordinate setting is performed. When the operator 10 presses the initial coordinate setting unit 133 in this state, the coordinate system (X ′, Y ′, Z ′) of the first display screen 131 and the coordinate system (X, Y, Z) of the operator 10 are changed. The cross section of the tomographic plane 152 at this time is defined as the initial position of the tomographic plane 152 displayed on the first display screen 131.

  FIG. 5B shows how the tomographic plane 152 of the first display screen 131 moves when the operator 10 moves the medical image display apparatus 100 forward or backward after setting the initial position. It is a figure. When the operator 10 pulls the medical image display apparatus 100 toward the front so as to move in the −Z ′ axis direction of the first display screen 131 (arrow 171a), the image reconstruction unit 120 moves the tomographic plane 152 to −Z 'Move in the axial direction (arrow 171b). At this time, on the first display screen 131, a tomographic image 153 (or tomographic plane 152) translated from the center position 154 in the −Z-axis direction is displayed. When the operator 10 moves the medical image display device 100 in the + Z ′ axis direction of the first display screen 131 (arrow 172a), the image reconstruction unit 120 moves the tomographic plane 152 in the + Z ′ axis direction (arrow). 172b). At this time, the first display screen 131 displays a tomographic image 153 (or tomographic plane 152) of the tomographic plane 152 translated from the center position 154 in the + Z-axis direction.

  FIG. 5C shows how the tomographic plane 152 of the first display screen 131 moves when the operator 10 rotates the medical image display apparatus 100 about the X ′ axis after setting the initial position. FIG. When the operator 10 rotates the medical image display apparatus 100 by θ ° with respect to the X ′ axis of the first display screen 131 (arrow 173a), the image reconstruction unit 120 rotates the tomographic plane 152 by θ ° in the X ′ axis direction. (Arrow 173b). At this time, on the first display screen 131, a tomographic image 153 (or tomographic plane 152) including the center position 154 and rotated by θ ° with respect to the X ′ axis is displayed.

  In FIG. 5A, before setting the initial position, a tomographic plane 152 that passes through the center position 154 of the three-dimensional image 151 and is parallel to the XY plane is displayed on the first display screen 131, and this tomographic plane 152 is displayed at the initial position. Set as. However, the tomographic plane 152 may be set at an initial position different from this. For example, the tomographic plane 152 set at the initial position may be set to be parallel to a plane such as the XZ plane or the YZ plane of the three-dimensional image 151. Further, a plane parallel to the tomographic plane 152 may be arbitrarily determined by inputting a plurality of coordinates on the plane. Further, the tomographic plane 152 set as the initial position may be set so as to pass through an arbitrary coordinate position instead of the center position 154. When a portion to be observed in the three-dimensional image 151 is specified in advance, the portion to be observed can be quickly and easily observed by arbitrarily setting the tomographic plane 152 set as the initial position in this way. be able to.

  Further, the relationship between the tomographic plane 152 and the three-dimensional image 151 set at the initial position may be set so as to match the relationship between the operator 10 and the medical image display device 100. This relationship will be described below.

  FIG. 6 is a diagram showing the operator 10 for setting the initial position, the medical image display device 100, the three-dimensional image 151, and the tomographic plane 152. The operator 10 holding the medical image display device 100 is shown on the left side of FIG. 6, and the coordinate system (X, Y, Z) of the operator 10 and the coordinate system (X ′, Y ′, Z ′). 6 shows a three-dimensional image 151 and a tomographic plane 152. The coordinate system (X, Y, Z) of the three-dimensional image 151 and the coordinate system (X ′, Y ′, Z ′).

  In FIG. 6, the operator 10 faces in the −X-axis direction as in FIG. 1, and holds the medical image display apparatus 100 in a state inclined by θ ° from the + Y-axis direction to the −X-axis direction. Therefore, the relationship between the coordinate system (X ′, Y ′, Z ′) that is the coordinate system of the first display screen 131 and the coordinate system (X, Y, Z) that is the coordinate system of the operator 10 is the + Z-axis direction. And the + X′-axis direction coincide with each other, and the + Y′-axis direction is a direction rotated from the + Y-axis direction by θ ° about the Z-axis in the −X-axis direction. The relationship between the coordinate system (X ′, Y ′, Z ′) of the tomographic plane 152 and the coordinate system (X, Y, Z) of the three-dimensional image 151 is also related to the coordinate system (X, Y, Z) of the operator 10 and The first display screen 131 has the same relationship as the coordinate system (X ′, Y ′, Z ′).

  When the operator 10 starts up the medical image display apparatus 100 in the state on the left side of FIG. 6 and starts up the software to display the first display screen 131, the three-dimensional coordinate position of the medical image display apparatus 100 is automatically displayed. And the inclination is calculated, and the tomographic plane 152 shown on the right side of FIG. 6 is displayed. In this state, the operator 10 moves the medical image display apparatus 100 to display an arbitrary image on the first display screen 131 to display the cross section most desired to be observed in the three-dimensional image 151. At this time, by setting the center of the tomographic plane 152 to be fixed at the center position 154, the operator 10 can prevent the tomographic plane 152 from deviating from the three-dimensional image 151. When the operator 10 presses the initial coordinate setting unit 133 in a state where the section most desired to be observed is displayed, the operator 10 sets the section most desired to be observed as the tomographic plane 152 set to the initial position. can do.

  The method for setting the initial position shown above may be used by combining a plurality of methods depending on the situation.

  As shown in the first embodiment, the medical image display apparatus 100 can automatically switch the image displayed on the image display unit 130 in conjunction with the movement of the medical image display apparatus 100. Thereby, even when the operator 10 observes cross sections of various parts of the subject, the operator 10 can know sensuously which part of the subject the image displayed on the image display unit 130 is. Therefore, the operator 10 can easily and quickly grasp which part of the subject the tomographic image displayed on the image display unit 130 is.

  In addition, the distance that the tomographic plane 152 moves with respect to the distance that the operator 10 moves the medical image display apparatus 100 can be arbitrarily set, for example, 1/2 times. 5B, when the operator 10 moves the medical image display apparatus 100 by 20 cm in the direction of the arrow 171a, the image reconstruction unit 120 may move the tomographic plane 152 by 10 cm in the direction of the arrow 171b. it can. In this way, by setting the distance that the tomographic plane 152 moves with respect to the distance that the medical image display apparatus 100 is moved to ½ times, the operator 10 can observe detailed portions in detail, and the medical image display apparatus 100 can be used for medical purposes. By setting the distance that the tomographic plane 152 moves with respect to the distance that the image display apparatus 100 is moved to be twice, a large change can be observed with a small hand movement.

  The image reconstruction unit 120 can also enlarge / reduce the tomographic image 151 displayed on the first display screen 131. Furthermore, when the tomographic image 151 is magnified twice, the image reconstruction unit 120 can also set the distance that the tomographic plane 152 moves relative to the distance that the medical image display apparatus 100 moves to ½ times. With this setting, when the operator 10 moves the medical image display apparatus 100 by 1 cm, the tomographic image 151 moves by 2 cm, and the enlarged tomographic image 151 is moved according to the actual movement amount. be able to.

(Second Embodiment)
The image data sent to the medical image display apparatus 100 is acquired by a medical image diagnostic apparatus such as an X-ray CT (Computed Tomography) apparatus, a nuclear medicine diagnostic apparatus, an ultrasonic diagnostic apparatus, or an MRI (Magnetic Resonance Imaging) apparatus. Therefore, the medical image display apparatus 100 is combined with the medical image diagnostic apparatus to constitute a medical image diagnostic system. Hereinafter, a medical image diagnostic system when the ultrasonic diagnostic apparatus 200 is used in a medical image diagnostic apparatus will be described with reference to FIGS.

  FIG. 7 is a diagram showing the relationship between the ultrasonic diagnostic apparatus 200 and the medical image display apparatus 100. The right side of FIG. 7 illustrates a state in which the subject 20 is diagnosed by the ultrasonic diagnostic apparatus 200, and the left side is a block diagram of the ultrasonic diagnostic apparatus 200 and the medical image display apparatus 100. Yes. The ultrasonic diagnostic apparatus 200 mainly includes a main body 210 and a transmission / reception probe 220. The main body 220 includes a fixed screen display unit 211 fixed at a predetermined position, a three-dimensional image forming unit 212, and a data storage unit 213. The transmission / reception probe 220 includes a position coordinate sensor 221 and a transducer 222.

  FIG. 8 is a diagram showing a flowchart showing a series of processes from acquiring data from the subject 20 using the ultrasonic diagnostic apparatus 200 to displaying the data on the medical image diagnostic apparatus 100. Hereinafter, the process from image data acquisition to display on the medical image diagnostic apparatus 100 will be described with reference to FIG.

  In step S <b> 101 of FIG. 8, image data of the subject 20 is acquired by the transmission / reception probe 220 and stored in the data storage unit 213 of the main body 220. The examiner 50 places the transmission / reception probe 220 on the subject 20 and transmits ultrasonic waves to a site such as an organ of the subject 20. The transmission / reception probe 220 receives the echo signal from the subject 20, converts it into an electrical signal by the transducer 222, and sends the image data to the main body 210. Further, the transmission / reception probe 220 specifies the three-dimensional coordinate position of the transmission / reception probe 220 when the coordinate position sensor 221 receives a magnetic field from the magnetic field source 40 installed indoors. The position data of these transmission / reception probes 220 is also sent to the main body 210 and stored in the data storage unit 213 in association with the image data. In the ultrasonic diagnostic apparatus 200, the image diagnosis of the subject 20 can be performed by displaying the image data sent from the transmission / reception probe 220 in real time on the fixed screen display unit 211.

  In step S102, a 3D image 151 (see FIG. 3A) is formed in the 3D image forming unit 212 based on data such as image data and position data stored in the data storage unit 213. The image data of the formed three-dimensional image 151 is stored in the data storage unit 213.

  In step S <b> 103, the image data of the three-dimensional image 151 is transferred to the medical image diagnostic apparatus 100. The method of transferring data may be wired or wireless. The transferred image data is stored in the image data storage unit 110 of the medical image diagnostic apparatus 100.

  In step S104, the tomographic image 153 of the three-dimensional image 151 is observed using the medical image diagnostic apparatus 100. The method for observing the tomographic image 153 using the medical image diagnostic apparatus 100 is as described in the first embodiment.

(Third embodiment)
In the medical image diagnostic system, the medical image display device 100 can be used as an aid for treatment and diagnosis by acquiring image data in real time during treatment and diagnosis and displaying the acquired image data on the medical image display device 100. Hereinafter, an example in which the medical image diagnostic system includes the ultrasonic diagnostic apparatus 300 and the medical image display apparatus 100 and the medical image diagnostic system is used for puncture treatment will be described.

  FIG. 9 is a diagram showing the relationship between the ultrasonic diagnostic apparatus 300 and the medical image display apparatus 100. On the left side of FIG. 9, a block diagram showing the relationship between the ultrasound diagnostic apparatus 300 and the medical image apparatus 100 is shown. The ultrasonic diagnostic apparatus 300 includes a main body 310 and a three-dimensional transmission / reception probe 320. In addition, on the right side of FIG. 9, a puncture person 60 who is performing puncture treatment and an operator 10 who is assisting the puncture treatment are shown. The puncture person 60 performs puncturing while confirming the fixed screen display unit 211 of the ultrasonic diagnostic apparatus 300. The puncture person 60 pierces the puncture needle 330 into the body of the subject 20. A tomographic image including the puncture needle 330 formed by the three-dimensional image forming unit 312 is displayed on the fixed screen display unit 211, and the puncture person 60 performs puncturing while confirming the position of the puncture needle 330. The three-dimensional transmission / reception probe 320 includes a guide (not shown) for guiding the puncture needle 330. The operator 10 assists puncturing while observing a tomographic image formed based on the three-dimensional image 151 sent from the ultrasonic diagnostic apparatus 300 in real time using the medical image display apparatus 100.

  The three-dimensional transmission / reception probe 320 of the ultrasonic diagnostic apparatus 300 includes a coordinate position sensor 221 and a transducer 322 that detect the coordinate position of the three-dimensional transmission / reception probe 320. The three-dimensional transmission / reception probe 320 receives the magnetic field from the magnetic field source 40 installed in the room by the coordinate position sensor 221 and measures position data such as three-dimensional position coordinates, inclination, and direction. The three-dimensional transmission / reception probe 320 can acquire image data of a three-dimensional image in real time. Hereinafter, as an example of the three-dimensional transmission / reception probe 320, a three-dimensional transmission / reception probe 320a and a three-dimensional transmission / reception probe 320b will be described.

  FIG. 10A is a schematic perspective view of the three-dimensional transmission / reception probe 320a. The three-dimensional transmission / reception probe 320a is formed to include a plurality of transducers 322a spread on the XZ plane. The three-dimensional transmission / reception probe 320a irradiates the subject 20 with ultrasonic waves, and collects echo signals 340 from the subject 20 in each transducer 322a.

  FIG. 10B is a schematic perspective view of the three-dimensional transmission / reception probe 320b. In the three-dimensional transmission / reception probe 320b, the transducer 322b is formed in a long arc shape in the Z-axis direction, and the transducer 322b is driven in the + X-axis direction and the −X-axis direction by the rotation of the driving unit 350. Power is transmitted to the driving unit 350 from the stepping motor 351 through the belt 352. Further, the drive unit 350 is provided with a drive amount sensor (not shown) that detects the drive amount by which the transducer 322b is driven. The three-dimensional transmission / reception probe 320b collects a plurality of echo signals 340 by driving the transducer 322b in the direction orthogonal to the transducer 322b in this way.

  Returning to FIG. 9, the main body 310 of the ultrasonic diagnostic apparatus 300 includes a fixed screen display unit 211, a three-dimensional image forming unit 312, and a data storage unit 313. The 3D image forming unit 312 forms a 3D image 151 from the collected tomographic images. The fixed screen display unit 211 displays a tomographic image including the puncture needle 330 among the three-dimensional images formed by the three-dimensional image forming unit 312. Further, the 3D image formed by the 3D image forming unit 312 is sent to the data storage unit 313 and stored.

  In the medical image display apparatus 100, the medical image display apparatus 100 intermittently receives the image data of the 3D image acquired by the 3D transmission / reception probe 320, and the image reconstruction unit 120 receives the position data of the medical image display apparatus 100. Based on this, a tomographic image is created and displayed on the image display unit 130.

  In setting the initial position of the medical image display apparatus 100 in the third embodiment, for example, a tomographic plane including a tomographic image displayed on the fixed screen display unit 211 may be set as the initial position. Since the tomographic image including the puncture probe 330 is displayed on the fixed screen display unit 211, the puncture probe 330 can be easily found even in the medical image display apparatus 100.

  In the third embodiment, the operator 10 can perform assistance while observing the state of puncture in real time. The operator 10 can observe a tomographic image different from that of the puncture person 60 by the medical image display device 100, and the operator 10 can observe an appropriate tomographic image by moving the medical image display device 100. It is possible to easily grasp the state of the tomographic image sensuously. Therefore, the medical image display apparatus 100 can quickly find a tomographic image suitable for assistance, and can perform appropriate assistance quickly. The third embodiment can be used from an educational viewpoint. For example, by making the operator 10 an apprentice doctor and the puncture person 60 a veteran doctor, the apprentice doctor 10 punctures the veteran doctor the puncture person 60 at what position and in what direction. It can be confirmed with tomograms of all angles.

  As described above, the optimal embodiment of the present invention has been described in detail. However, as will be apparent to those skilled in the art, the present invention can be implemented with various modifications and variations within the technical scope thereof. For example, in the third embodiment, the image reconstruction unit 120 is arranged in the medical image display apparatus 100 as in the first embodiment. When used as a medical image diagnostic system, the image reconstruction unit 120 may be disposed in the main body 310. In this case, the position detection unit 140 detects the three-dimensional coordinate position and inclination of the medical image display apparatus 100 and sends the position data to the ultrasonic diagnostic apparatus 300. The image reconstruction unit 120 in the main body 310 creates a tomographic image 153 based on the received position data of the medical image display device 100 and sends the tomographic image 153 to the medical image display device 100. The sent tomographic image is displayed on the image display unit 130. By performing such an operation intermittently, the image display unit 130 can display a real-time tomographic image of the subject.

DESCRIPTION OF SYMBOLS 10 ... Operator 20 ... Subject 30 ... Bed 40 ... Magnetic field source 50 ... Examiner 60 ... Puncturer 100 ... Medical image display apparatus 110 ... Image data storage part 120 ... Image reconstruction part 130 ... Image display part 131 ... First DESCRIPTION OF SYMBOLS 1 Display screen 132 ... 2nd display screen 133 ... Initial coordinate setting part 140 ... Position detection part 151 ... Three-dimensional image 152 ... Tomographic plane 153, 340 ... Tomographic image 154 ... Center position 155 ... Subject 200, 300 ... Ultrasound diagnosis Apparatus 210, 310 ... Main body 211 ... Fixed screen display unit 212, 312 ... Three-dimensional image forming unit 213, 313 ... Data storage unit 220 ... Transmission / reception probe 221 ... Coordinate position sensor 222, 322 ... Transducer 320 ... Three-dimensional transmission / reception probe 330 ... Puncture needle 350 ... Drive unit 351 ... Stepping motor 352 ... belt

Claims (9)

A portable image display device that displays an image on an image display unit and can be moved and tilted to an arbitrary position by an operator,
An image data storage unit for storing image data of a three-dimensional image in the subject;
A position detector that detects the amount of movement and the amount of tilt that the portable image display device has moved; and
An image reconstruction unit that reconstructs a tomographic image according to the amount of movement and the amount of inclination;
The medical image display device, wherein the image display unit displays the tomographic image reconstructed by the image reconstruction unit. An initial coordinate setting unit for setting a center position of the three-dimensional image to an initial position of the portable image display device;
The medical image display device according to claim 1, wherein the image reconstruction unit reconstructs a tomographic image according to the movement amount and the tilt amount from the initial position.   Before the initial position of the portable image display unit is set by the initial coordinate setting unit, the image reconstruction unit displays a tomographic image that is a vertical section in the body axis direction of the subject and passes through the center position. The medical image display apparatus according to claim 2, wherein image reconstruction is performed, and the portable image display unit displays the tomographic image passing through the center position.   The image display unit displays a first display screen for displaying the tomographic image, a whole outline frame of the three-dimensional image, and a second tomographic image position displayed on the first display screen with respect to the outline frame. The medical image diagnostic apparatus according to claim 1, further comprising a display screen.   The image display unit displays a first display screen that displays the tomographic image, and a second display that indicates a distance between a start end portion or a terminal end portion of the subject in the body axis direction of the subject and the position of the tomographic image. The medical image diagnostic apparatus according to claim 1, further comprising a screen. An X-ray diagnostic apparatus, an X-ray CT (Computed Tomography) apparatus, a nuclear medicine diagnostic apparatus, an ultrasonic diagnostic apparatus, or a medical image diagnostic apparatus that is an MRI (magnetic resonance imaging) apparatus;
A medical image display device according to any one of claims 1 to 5,
The medical image diagnostic system, wherein the image data is generated based on data acquired by the medical image diagnostic apparatus. The medical image diagnostic apparatus includes a transmission / reception probe including a transducer that transmits an ultrasonic wave to the subject and receives an echo signal from the subject and a coordinate position sensor that detects a coordinate position,
The medical image diagnosis system according to claim 6, wherein the image data stored in the image data storage unit is generated based on a coordinate position of the echo signal and the transmission / reception probe.   The medical image diagnostic system according to claim 7, wherein the transmission / reception probe includes a driving unit that drives in a direction orthogonal to the transducer and a driving amount sensor that detects a driving amount by which the driving unit drives the transducer. In addition to displaying images, a fixed screen display unit fixed at a predetermined position is provided.
The transmission / reception probe includes a puncture probe having a guide for guiding a puncture needle to the subject,
The medical image diagnostic system according to claim 7 or 8, wherein the fixed screen display unit displays a tomographic image including the puncture needle.