JP5537642B2 - Image processing apparatus and X-ray diagnostic apparatus - Google Patents

Description

The present invention relates to an image display apparatus and an image diagnostic apparatus, and more particularly to an image display apparatus and an image diagnostic apparatus that display image data obtained by imaging such as X-rays, MRI, and ultrasonic waves.

In an image diagnostic apparatus such as an X-ray image diagnostic apparatus, an X-ray CT apparatus, an MRI apparatus, or an ultrasonic diagnostic apparatus, it is obtained from an imaging unit of these image diagnostic apparatuses and is used as an image display unit or an image display apparatus of the image diagnostic apparatus. Diagnosis and treatment are performed by interpreting the displayed image data.

In recent years, X-ray diagnostic imaging apparatuses have been used for angiographic examinations using catheters and IVR (Integre).
With the development of raditional radiology, progress has been made mainly in the cardiovascular field. The diagnostic imaging in the circulatory region is intended for the arteriovenous system including the cardiovascular system. A method is known in which imaging is performed from a plurality of angles in a state where a contrast medium is injected into a blood vessel, and blood vessel three-dimensional image data is displayed on an image display unit or an image display device (see, for example, Patent Document 1). .)

When blood vessel inspection or treatment is performed, reference image data, which is three-dimensional image data of a blood vessel obtained in advance by imaging, is displayed on, for example, one monitor of an image display device, and another reference is made by referring to this reference image data. This is performed while viewing the blood vessel image data displayed on the monitor. Then, in order to grasp in advance the three-dimensional structure of the reference image data displayed on the monitor, such as the branching and overlapping of blood vessels, an operation of rotating the reference image data in one direction and the other direction is performed.

JP-A-8-79628

However, if the reference image data displayed on the monitor is rotated in one direction and then rotated in the other direction, it is necessary to perform the rotation operation after designating the rotation direction that is the other direction, which is troublesome. Therefore, it is difficult to recognize the structure of the reference image data.

The present invention has been made to solve the above-described problems, and an object thereof is to provide an image display device and an image diagnostic device capable of easily recognizing three-dimensional image data.

In order to solve the above problem, the image processing apparatus of the present invention described in claim 1 includes a display control unit that performs control to display volume data obtained from an image diagnostic apparatus so as to be capable of reciprocating rotation, and the volume data includes: Reciprocating rotation condition setting means for presetting a first range for reciprocating rotation, and when the display control means is reciprocatingly rotating the volume data in the first range, an input means by an operator of inverting the said volume data based on the operation, it has row control to reciprocally rotate the display in a narrow second range than the first range, the first range, the first reversing angle and the second The second range includes a third inversion angle set at the position where the operation is performed, the first inversion angle, or the second inversion angle. Characterized in that it is a range indicated by.

1 is a block diagram showing a configuration of an X-ray image diagnostic apparatus according to an embodiment of the present invention. The figure which looked at the three-dimensional image data which reciprocates according to the Example of this invention from the top. The figure for demonstrating an example of the production | generation of the three-dimensional image data which reciprocates according to the Example of this invention. The figure which shows an example of the reciprocating rotation condition setting screen displayed on the 2nd monitor which concerns on the Example of this invention. The flowchart which shows operation | movement of the X-ray image diagnostic apparatus which concerns on the Example of this invention. The figure which shows an example of the three-dimensional image data which reciprocates and is displayed on the screen of the 2nd monitor which concerns on the Example of this invention.

  Examples of the present invention will be described.

Embodiments of an X-ray image diagnostic apparatus according to the present invention will be described below with reference to FIGS.
The present invention can also be applied to image diagnostic apparatuses such as an X-ray CT apparatus, an MRI apparatus, and an ultrasonic diagnostic apparatus.

FIG. 1 is a block diagram showing a configuration of an X-ray image diagnostic apparatus according to an embodiment of the present invention. The X-ray diagnostic imaging apparatus 100 includes an imaging unit 6 that irradiates a subject P with X-rays for fluoroscopy and radiographing and generates two-dimensional image data such as fluoroscopic image data and radiographed image data. An image display unit 7 for displaying the generated 2D image data, generating 3D image data based on the 2D image data generated by the imaging unit 6, and displaying the generated 3D image data; P
Setting of subject information such as ID and name, imaging time, image magnification, imaging angle, top position, X
Setting of fluoroscopy conditions such as line irradiation time and photographing conditions, and display modes for generating two-dimensional image data and three-dimensional image data to be displayed on the image display unit 7 (fluoroscopic image mode, photographed image mode, three-dimensional image mode) And an operation unit 8 for inputting various commands, and a system control unit 9 for controlling the photographing unit 6 and the image display unit 7 in an integrated manner.

The imaging unit 6 includes an X-ray generation unit 1 that irradiates the subject P with X-rays, an X-ray detection unit 2 that two-dimensionally detects X-rays transmitted through the subject P, and generates X-ray projection data. The C-arm 32a that supports the X-ray generator 1 and the X-ray detector 2, the top plate 31a on which the subject P is placed, and a high voltage necessary for X-ray irradiation in the X-ray generator 1 are generated. Image data for generating two-dimensional image data from the X-ray projection data generated by the high voltage generator 4, the mechanism 3 for setting the angle of the C-arm 32a and the position of the top 31a, and the X-ray detector 2. A generation unit 5 and an image data storage unit 51 that stores the two-dimensional image data generated by the image data generation unit 5 are provided.

The X-ray generator 1 accelerates electrons emitted from a cathode (filament) with a high voltage and collides with the anode to generate X-rays, and between the X-ray tube 11 and the subject P. And an X-ray diaphragm 12 that sets an irradiation range of X-rays emitted from the X-ray tube 11 and irradiating the subject P. Then, X-rays are generated by the high voltage supplied from the high voltage generator 4 based on the fluoroscopic conditions and the imaging conditions.

The X-ray detection unit 2 detects an X-ray transmitted through the subject P and converts it into light, a television camera 22 that captures the light from the image intensifier 21 and converts it into an electrical signal, And an A / D converter (not shown) that converts an electric signal from the television camera 22 into a digital signal, and outputs the signal converted into the digital signal to the image data generation unit 5 as X-ray projection data. A flat detector provided with a photodetection element such as a semiconductor that detects X-rays transmitted through the subject P and converts them into electric charges may be used.

The image intensifier 21 includes a moving mechanism that can move the position back and forth with respect to the X-ray tube 11 of the X-ray generator 1, and the distance (SID) between the X-ray tube 11 and the image intensifier 21. Can be adjusted. The image intensifier 21
Has an X-ray image receiving surface (not shown) on which X-rays transmitted through the subject P are incident, and an X-ray input field size (FOV) on the X-ray image receiving surface can be adjusted.

The mechanism unit 3 includes a top plate moving mechanism 31 that moves the top plate 31a on which the subject P is placed in the longitudinal direction, the width direction, and the vertical direction, and the X-ray generation unit 1 and the X-ray detection unit 2. Supporting C-arm 32
a C-arm rotation mechanism 32 that rotates a around the subject P, and a C-arm rotation mechanism 31 that controls the top-plate moving mechanism 31 and the C-arm rotation mechanism 32 based on a control signal supplied from the system control unit 9
And a top plate mechanism control unit 33.

The C-arm / top plate mechanism control unit 33 has a sensor such as an encoder for detecting the movement distance of the top plate 31a arranged in the top plate moving mechanism 31, and moves the top plate based on a signal output from the sensor. The mechanism 31 is controlled. By this control, the top plate moving mechanism 31 moves the top plate 31a and sets it to a desired position.

In addition, a sensor such as an encoder that detects the rotation angle of the C arm 32 a disposed in the C arm rotation mechanism 32 is provided, and the C arm rotation mechanism 32 is based on a signal output from the sensor.
To control. By this control, the C arm rotation mechanism 32 rotates the C arm 32a to
The line generator 1 and the X-ray detector 2 are set to a desired imaging angle. Then, an angle setting signal set to the photographing angle is output to the system control unit 9. Furthermore, an optimal SID is set for the examination target region of the subject P based on a control signal from the system control unit 9.

The high voltage generator 4 includes a high voltage generator 41 that supplies a high voltage applied between the anode and the cathode in order to accelerate thermoelectrons generated from the cathode of the X-ray tube 11 of the X-ray generator 1, and a system Control unit 9
And an X-ray controller 42 for controlling the high-voltage generator 41 based on a control signal supplied from.

Based on a control signal from the X-ray controller 42, the high voltage generator 41 applies X-rays for fluoroscopy to the X-ray tube 11 of the X-ray generator 1, and X for imaging with higher energy than that for fluoroscopy. Supply high voltage and heating voltage to generate lines.

The X-ray controller 42 controls the high voltage generator 41 based on the X-ray irradiation condition information including the tube voltage, the tube current, and the X-ray irradiation time of the fluoroscopic and imaging conditions supplied from the system control unit 9. To do. Then, by controlling the supply voltage and heating voltage of the high voltage generator 41, the X-ray tube 1
1 is set to the tube voltage and tube current of the fluoroscopic and imaging conditions, and the X-ray tube 11 is irradiated for a time corresponding to the X-ray irradiation time.

The image data generation unit 5 generates fluoroscopic image data from X-ray projection data that is irradiated with fluoroscopic X-rays from the X-ray generation unit 1 and is output line by line from the X-ray detection unit 2. Further, X-rays for imaging are emitted from the X-ray generation unit 1, and captured image data is generated from X-ray projection data output from the X-ray detection unit 2 in units of lines. Then, the generated two-dimensional image data such as the perspective image data and the captured image data are attached with the imaging conditions supplied from the system control unit 9 and output to the image display unit 7. Further, the data is output to the image data storage unit 51.

The image data storage unit 51 includes a storage medium such as a magnetic disk or an optical disk, and stores perspective image data, captured image data output from the image data generation unit 5, captured image data captured from a plurality of angles, and the like.

The image display unit 7 is stationary based on the first monitor 71 that displays the two-dimensional image data output from the image data generation unit 5 of the photographing unit 6 and the plurality of two-dimensional image data generated by the photographing unit 6. The three-dimensional image data generated by the image data processing unit 72 and the image data processing unit 72 for generating the three-dimensional image data and generating the three-dimensional image data reciprocally rotating between two preset angles. And a second monitor 73 for display.

The first monitor 71 includes a liquid crystal panel or a CRT, and displays the two-dimensional image data output from the image data generation unit 5.

When the display mode is set to the three-dimensional image mode from the operation unit 8, the image data processing unit 72 reads the two-dimensional image data photographed from a plurality of photographing angles from the image data storage unit 51 of the photographing unit 6 and sets the volume. Generate data. Then, the generated volume data is processed by, for example, a volume rendering method to generate stationary three-dimensional image data. When a reciprocating rotation operation is performed from the operation unit 8, three-dimensional image data that reciprocally rotates between two preset angles is generated. Then, the generated three-dimensional image data is output to the second monitor 73.

The second monitor 73 includes a liquid crystal panel or CRT, and sets two reciprocating rotation conditions such as two angles for reciprocating the three-dimensional image data, the number of reciprocating rotations, and an operation that triggers the reciprocating rotation. Display the reciprocating rotation condition setting screen. The three-dimensional image data output from the image data processing unit 72 is displayed.

FIG. 2 is a top view of the three-dimensional image data reciprocatingly displayed on the second monitor 73. The three-dimensional image data 73a is set to an initial angle θ0 so that it can be reciprocally rotated about an axis corresponding to the body axis of the subject P, for example. Then, with respect to the viewpoint 73b positioned on the front side of the three-dimensional image data 73a set to the initial angle θ0, the initial reverse angle θL (for example, −− 180 ° ≦ θL <0 °
) Clockwise (arrow R1 direction). By this rotation, the part from the front to the right side or the right side and the back of the 3D image data 73 a is displayed on the second monitor 73.

Next, after inversion at the left inversion angle θL, a preset right inversion angle θR (for example, 0 °
It rotates counterclockwise (arrow R2 direction) until <θL ≦ 180 °. As a result of this rotation, the portion of the three-dimensional image data 73a extending from the back or right side to the left side via the front or the left side and back is displayed on the second monitor 73.

Furthermore, after reversing at the right reversal angle θR, it rotates in the R1 direction to the initial angle θ0. By this rotation, the portion extending from the back or left side of the 3D image data 73a to the front is the second monitor 73.
Is displayed.

In this way, the process of rotating between each in the order of the initial angle θ0, the left inversion angle θL, the right inversion angle θR, and the initial angle θ0 is one reciprocation, and the above steps are repeated for a predetermined number of reciprocations. .

In addition, after the 3D image data 73a set to the initial angle θ0 is displayed on the second monitor 73, the rotation axis of the 3D image data 73a can be set in an arbitrary direction. As a result, reciprocating rotation in various directions is possible.

1 includes a keyboard, a trackball, a joystick, a mouse, a reciprocating rotation switch 8a for reciprocating rotation of 3D image data, and a reciprocal rotation stop for stopping reciprocating 3D image data. An input device such as a switch 8b is provided. Setting operation of a display mode (perspective image mode, captured image mode, 3D image mode) input using this input device, setting operation of imaging conditions, setting operation of reciprocating rotation conditions, operation of reciprocating rotation switch 8a, reciprocating operation Operation information corresponding to the operation of the rotation stop switch 8b or the like is output to the system control unit 9.

Here, the image data processing unit 72 generates reciprocating three-dimensional image data based on input information of a single press operation in which the reciprocating rotation switch 8a is pressed for a short time, for example, less than 2 seconds. Then, based on the input information of the double click operation in which the single press operation of the reciprocating rotation switch 8a is repeated twice continuously during the reciprocating rotation, the three-dimensional image data stopped at the rotation angle when the double click is performed is generated.

Also, after the first single-push operation of the reciprocating rotation switch 8a, if the second single-push operation is performed during the reciprocating rotation, the rotation angle θx at the time of the single-push operation is reversed, and then left from the rotation angle θx. Or, it rotates to the reverse angle close to the right reverse angle θL, θR. Next, after reversing at a close reversal angle, it is rotated and reversed at a rotation angle θx. Then, three-dimensional image data that reciprocally rotates between the close inversion angle and the rotation angle θx is generated.

Furthermore, if the third single-press operation is performed during reciprocating rotation, the rotation angle θy when the single-press operation is performed
After reversing, the rotation is reversed at a near reversal angle or an angle close to the rotation angle θx. And
Three-dimensional image data that reciprocates between the close angle and the rotation angle θy is generated.

In addition, after reversing at the rotation angle θx at the time of the second single press operation, the rotation is performed from the rotation angle θx to the reversal angle close to the left or right reversal angles θL and θR. And you may make it reciprocate between left inversion angle (theta) L and right inversion angle (theta) R.

Further, when a long-pressing operation is performed in which the reciprocating rotation switch 8a is pressed for a long time of, for example, 2 seconds or more, the reciprocating rotation is performed based on the input information when the operation is pressed, and the rotation angle when released after being pressed. After the reverse rotation, the rotation is performed to the reverse angle close to the left or right reverse angle θR, θL. Then, three-dimensional image data that reciprocates between the left inversion angle θL and the right inversion angle θR is generated.

The reciprocating rotation is started based on the input information when the reciprocating rotation switch 8a is pressed for a long time, and after reversing at the rotational angle when released after being pushed, the left or right reversing angle is determined from this rotational angle. Rotate to an inversion angle close to θR and θL. And you may make it reciprocate between the reversal angles near the rotation angle.

Furthermore, when the reciprocating rotation stop switch 8b is pressed during the reciprocating rotation after the single or long pressing operation of the reciprocating rotation switch 8a, the three-dimensional image data is generated at the initial angle θ0.

The system control unit 9 includes a CPU and a storage circuit 9a (not shown). After the input information by various setting operations and input operations supplied from the operation unit 8 is temporarily stored in the storage circuit 9a, the system control unit 9 is based on the input information. Control the entire system.

Next, an example of the reciprocating rotation operation of the three-dimensional image data will be described with reference to FIGS.
FIG. 3 is a diagram for explaining an example of generation of reciprocally rotating three-dimensional image data. The image data processing unit 72 sets the generated volume data 72a to the initial angle θ0, and sets the virtual 0th viewpoint located in front of the volumeter and the viewing direction indicated by the arrow from this viewpoint. Then, the projection data of the volume data 72a projected on the 0th projection plane perpendicular to the line-of-sight direction is used as the viewpoint 7 at the initial angle θ0 from the three-dimensional image data 73a of FIG.
It is generated as three-dimensional image data viewed from 3b. That is, three-dimensional image data is generated by performing mapping to pixel values to which, for example, opacity and color are assigned based on the voxel values of the volume data 72a along the 0th viewing direction.

Further, the virtual first viewpoint and the line-of-sight direction indicated by the arrow from this viewpoint are set to the first angle rotated counterclockwise from the initial angle θ0 with respect to the volume data 72a. Then, volume data 72 projected on the first projection plane perpendicular to the line-of-sight direction.
The projection data of a is generated as 3D image data viewed from the viewpoint 73b when the 3D image data 73a is rotated by an angle θ1.

Further, a virtual viewpoint and a line-of-sight direction indicated by an arrow from this viewpoint are set for each interval of the same angle between the counterclockwise initial angle θ0 and the first angle. Then, the projection data of the volume data projected on the projection plane perpendicular to the line-of-sight direction is generated as 3D image data viewed from the viewpoint 73b when the 3D image data 73b of FIG.

In the Lth angle, a virtual Lth viewpoint and a viewing direction indicated by an arrow from this viewpoint are set. Then, the projection data of the volume data projected onto the Lth projection plane perpendicular to the line-of-sight direction is generated as three-dimensional image data viewed from the viewpoint 73b when the left inversion angle θL is rotated.

Then, three-dimensional image data that rotates clockwise from the initial angle θ0 to the left inversion angle θL is generated by sequentially generating three-dimensional image data by projection onto the 0th to Lth projection planes.

In the rotation from the left inversion angle θL to the right inversion angle θR, as in the case of the rotation from the initial angle θ0 to the left inversion angle θL, the initial angle clockwise from the Lth angle to the volume data 72a. A virtual viewpoint and a line-of-sight direction indicated by an arrow from this viewpoint are set at intervals of the same angle as between θ0 and the first angle. Then, the projection data of the volume data 72a projected on the projection plane perpendicular to the line-of-sight direction is generated as three-dimensional image data that can be seen from the viewpoint 73b when each angle is rotated. Then, three-dimensional image data that rotates counterclockwise from the left inversion angle θL to the right inversion angle θR is generated by sequentially generating three-dimensional image data by projection onto each projection plane.

In addition, in the rotation from the right reverse angle θR to the initial angle θ0, the virtual viewpoint is generated at intervals of the same angle as the interval between the initial angle θ0 and the first angle counterclockwise from the Rth angle with respect to the volume data 72a. And the line-of-sight direction indicated by the arrow from this viewpoint. Then, the projection data of the volume data 72a projected onto the projection plane perpendicular to the line-of-sight direction is generated as three-dimensional image data viewed from the viewpoint 73b when rotated to each angle. Then, by sequentially generating 3D image data by projection onto each projection plane, 3D image data that rotates clockwise from the right inversion angle θR to the initial angle θ0 is generated.

Next, an example of the reciprocating rotation condition setting screen displayed on the second monitor 73 will be described with reference to FIG. The reciprocating rotation condition setting screen 90 shown in FIG. 4 includes a “rotation range” column for setting the left and reverse angles θL and θR, a “reciprocating frequency” column for setting the reciprocating frequency of reciprocating rotation, and It is configured by a “trigger operation” column for setting an operation that becomes a trigger for stopping the reciprocating rotation.

The “rotation range” column includes a dialog box 901 for inputting the left reverse angle θL and a dialog box 902 for inputting the right reverse angle θR. When an operation of inputting, for example, “−90 °” that is the left reverse angle θL and, for example, “90 °” that is the right reverse angle θR, is performed from the operation unit 8, “−90 °” and “90 °”. Dialog boxes 901 and 9
02 and stored in the storage circuit 9 a of the system control unit 9.

The “round trip count” column includes a dialog box 903 for inputting the round trip count. When an input for selecting, for example, “3” from 1 to K (K> 3), which is the number of reciprocations, and infinite, is performed from the operation unit 8, “3” is displayed in the dialog box 903, and the system The data is stored in the storage circuit 9a of the control unit 9. When “infinite” is selected, the reciprocating rotation is performed until a reciprocating rotation stopping operation or an operation serving as a trigger for stopping the reciprocating rotation is performed.

The “trigger operation” column includes a dialog box 904 for inputting an operation to be a trigger for stopping the reciprocating rotation. Then, when an input for selecting, for example, “perspective operation” for starting fluoroscopy from the operation unit 8 is performed from the operation unit 8, “perspective operation” is displayed in the dialog box 904, and system control is performed. Stored in the storage circuit 9 a of the unit 9.

Hereinafter, an example of the operation of the X-ray image diagnostic apparatus 100 will be described with reference to FIGS. 1 to 6. FIG. 5 is a flowchart showing the operation of the X-ray image diagnostic apparatus 100. FIG. 6 is a diagram showing a screen of the three-dimensional image data that is reciprocatingly displayed on the second monitor 73.

5, the storage circuit 9 a of the system control unit 9 stores “−90” as the left and right reverse angles θL and θR set on the reciprocating rotation condition setting screen 90 of FIG. 2 by the operation from the operation unit 8.
Input information of “°”, “90 °”, “3” which is the number of reciprocations, and “fluoroscopic operation” which is a trigger operation are stored. In addition, input information of imaging conditions of the subject P is stored.

First, in order to inspect the subject P, the image display unit 7 uses, as reference image data, captured image data generated by imaging from a plurality of imaging angles stored in the image data storage unit 51 of the imaging unit 6. The operation of displaying on the second monitor 73 is performed. When an operation for selecting captured image data from a plurality of imaging angles of the subject P and setting the display mode to the three-dimensional image mode is performed from the operation unit 8, the X-ray diagnostic imaging apparatus 100 starts an examination (step) S1).

The system control unit 9 instructs the photographing unit 6 and the image display unit 7 to generate and display 3D image data. The image data processing unit 72 of the image display unit 7 reads captured image data from a plurality of selected shooting angles from the image data storage unit 51 and generates volume data. Then, the three-dimensional image data set at the initial angle θ 0 is generated from the generated volume data and is output to the second monitor 73. The second monitor 73 receives an initial angle θ from the image data processing unit 72.
The stationary 3D image data set to 0 is displayed (step S2).

Next, in order to grasp the structure of the three-dimensional image data displayed on the second monitor 73, when the single-push operation of the reciprocating rotation switch 8a of the operation unit 8 is performed, the image data processing unit 72 Three-dimensional image data that reciprocally rotates between “−90 °” that is θL and “90 °” that is the right reverse angle θR is generated, and the generated three-dimensional image data at each angle is sequentially added to the second monitor 73.
Output to. The second monitor 73 displays the three-dimensional image data that is reciprocatingly output from the image data processing unit 72 (step S3).

FIG. 6 is a diagram illustrating an example of three-dimensional image data that is reciprocatingly displayed on the screen of the second monitor 73. On the screen 91 in FIG. 6A, three-dimensional image data 911 at the initial angle θ0 is displayed. Thereafter, the 3D image data 911 rotates in the R1 direction.

The screen 92 in FIG. 6B displays three-dimensional image data 912 at “−90 °” after rotating in the R1 direction from the initial angle θ0. After this, the 3D image data 912 is
Rotate in R2 direction.

On the screen 93 in FIG. 6C, three-dimensional image data 912 at “90 °” after being rotated in the R2 direction is displayed. Thereafter, the 3D image data 913 rotates in the R1 direction.

In this way, the second operation can be performed by a simple operation of simply pressing the reciprocating switch 8a.
The three-dimensional image data can be reciprocally rotated on the monitor 73. Thereby, the three-dimensional structure of the three-dimensional image data can be easily recognized.

Next, the three-dimensional structure of the three-dimensional image data displayed on the second monitor 73 can be grasped, and an operation for stopping the three-dimensional image data reciprocatingly rotated from the operation unit 8 when the image data is reciprocatingly rotated. Is performed (Yes in step S4 in FIG. 5), the process proceeds to step S5. If no stop operation is performed (No in step S4 in FIG. 5), the process proceeds to step S7.

When the stop operation is a double click operation of the reciprocating rotation switch 8a of the operation unit 8 (Yes in step S5 in FIG. 5), the image data processing unit 72 stops at the rotation angle when the double click operation is performed. The obtained three-dimensional image data is output to the second monitor 73. The second monitor 73 displays the three-dimensional image data stopped at the rotation angle corresponding to the operation (step S6 in FIG. 5).

If the stop operation is an operation of pressing the reciprocating rotation stop switch 8b of the operation unit 8 or a fluoroscopic operation from the operation unit 8 (No in step S5 in FIG. 5), the process proceeds to step S8.

If the number of reciprocations of the 3D image data is less than the number of reciprocations 3 after “No” in Step S4 (No in Step S7), the process returns to Step S3. In case of 3 round trips (
Yes in step S7), the process proceeds to step S8.

After “No” in step S5 or “Yes” in step S7, the image data processing unit 72
Outputs the three-dimensional image data set at the initial angle θ 0 to the second monitor 73. The second monitor 73 displays the 3D image data set at the initial angle θ0 (step S8).

Next, when a fluoroscopic operation is performed from the operation unit 8 by the operator who has recognized the three-dimensional structure of the three-dimensional image data of the subject P, the system control unit 9 causes the subject P and the image display unit 7 to display the subject P. Directing fluoroscopy. Then, the information on the top plate position and the photographing angle included in the fluoroscopic conditions is supplied to the C arm / top plate mechanism control unit 33 of the mechanism unit 3. The C-arm rotation mechanism 32 moves the top plate 31a and sets it to the top plate position according to the control signal of the C-arm / top-plate control unit 33, and the C arm 32
Rotate a to set the shooting angle.

The system control unit 9 outputs a control signal for irradiating the subject P with fluoroscopy X-rays.
Is output to the X-ray controller 42 of the high voltage generator 4 in FIG. High voltage generator 4 of high voltage generator 4
1 supplies a high voltage for X-ray irradiation to the X-ray generator 1 based on X-ray irradiation information from the X-ray controller 42. The X-ray generator 1 irradiates the subject P with X-rays corresponding to the high voltage supplied from the high voltage generator 41.

The X-ray detection unit 2 detects X-rays transmitted through the subject P, generates X-ray projection data, and outputs the generated X-ray projection data to the image data generation unit 5. The image data generation unit 5 generates perspective image data from the X-ray projection data output from the X-ray detection unit 2. Next, the fluoroscopy condition corresponding to the image data supplied from the system control unit 9 is attached and output to the first monitor 71 of the image display unit 7. The first monitor 71 displays the fluoroscopic image data output from the image data generation unit 5.

In this way, the reference image data, which is the three-dimensional image data set at the initial angle θ0 or a desired angle, is displayed on the second monitor 73, and the subject P is displayed on the first monitor 71 in real time.
The fluoroscopic image data can be displayed.

Then, when an operation for ending the imaging is performed from the operation unit 8 when the examination of the subject P is completed,
The system control unit 9 instructs the photographing unit 6 and the image display unit 7 to stop photographing and display. Then, the X-ray image diagnostic apparatus 100 ends the examination (step S9 in FIG. 5).

According to the embodiment of the present invention described above, the number of reciprocations set in advance between the preset left and right inversion angles θL and θR by an operation of single-pressing the reciprocating rotation switch 8a from the operation unit 8. It is possible to display the three-dimensional image data reciprocally rotated on the second monitor 73.

Then, by performing a double click operation after a single press operation of the reciprocating rotation switch 8a, the three-dimensional image data stopped at the rotation angle when the double click is performed can be displayed on the second monitor 73. In addition, after the reciprocating rotation switch 8a is single-pressed, the three-dimensional image data stopped at the initial angle θ0 is obtained by performing an operation corresponding to the trigger operation set on the screen 90 by pushing the reciprocating rotation stop switch 8b. It can be displayed on the second monitor 73.

Further, by performing the second single-pressing operation during the reciprocating rotation after the first single-pressing operation of the reciprocating rotation switch 8a, the three-dimensional image data is inverted at the current rotation angle θx, and then the rotation angle θx. To the left or right reversal angles θL and θR. Then, it is possible to display on the second monitor 73 the three-dimensional image data that reciprocates between the close inversion angle and the rotation angle θx.

Further, by performing the third single push operation of the reciprocating rotation switch 8a, the reversal is reversed at the rotation angle θy at that time, and then the rotation is reversed at the near reversal angle or the rotation angle θx. The three-dimensional image data that reciprocates between the close angle and the rotation angle θy can be displayed on the second monitor 73.

Furthermore, by performing a long press operation on the reciprocating rotation switch 8a, three-dimensional image data that reciprocally rotates based on the input information when the long press operation is pressed is displayed on the second monitor 73 and After reversing at the rotation angle when opened, it rotates to the reversal angle close to the left or right reversal angles θL, θR. Then, the three-dimensional image data that reciprocates between the left and right inversion angles θL and θR can be displayed on the second monitor 73.

Thereby, the structure of the three-dimensional image data can be easily recognized, and speeding up and accuracy of examination and treatment can be achieved.

P Subject 1 X-ray generation unit 2 X-ray detection unit 3 Mechanism unit 4 High voltage generation unit 5 Image data generation unit 6 Imaging unit 7 Image display unit 8 Operation unit 8a Reciprocal rotation switch 8b Reciprocal rotation stop switch 9 System control unit 9a Memory circuit 11 X-ray tube 12 X-ray restrictor 21 Image intensifier 22 TV camera 31 Top plate moving mechanism 31a Top plate 32 C arm rotation mechanism 32a C arm 33 C arm / top plate mechanism control unit 41 High voltage generator 42 X-ray controller 51 Image data storage unit 71 First monitor 72 Image data processing unit 73 Second monitor 100 X-ray image diagnostic apparatus

Claims (9)

Display control means for performing control to display volume data obtained from the diagnostic imaging apparatus so as to be capable of reciprocating rotation;
Reciprocating rotation condition setting means for presetting a first range in which the volume data reciprocally rotates,
The display control means reverses the volume data based on an operation of the input means by an operator when the volume data is reciprocatingly rotated in the first range, and a second narrower than the first range. There line control to reciprocally rotate the display in the range,
The first range is a range indicated by a first inversion angle and a second inversion angle;
The second range is an image processing apparatus that is a range indicated by a third inversion angle set at a position where the operation is performed and the first inversion angle or the second inversion angle . When an operation is performed while performing control to display the volume data in a reciprocating rotation in the second range, the display control means is a fourth inversion set at the position where the operation is performed. Performing control to display the volume data in a reciprocating rotation in a third range using an angle;
Said third range, said fourth reversing angle, the exhibited by the any of the reversing angle that constitutes the second range, the image processing of the claim 1, wherein a narrow range than the second range apparatus. The second range includes the third inversion angle and the first inversion angle or the second inversion angle that is an angle at which the volume data is inversion controlled immediately before the third inversion angle. The image processing apparatus according to claim 1 or 2, which is indicated by: It said first range, the image processing apparatus according to any one of claims 1 to 3 or less approximately 180 degrees. The display control means controls the reciprocating rotation display based on a pressing operation of the input means by an operator on the volume data, and based on the pressing operation of the input means by the operator when the volume data is reciprocatingly rotated. the image processing apparatus according to any one of claims 1 to 4 performs inversion control Te. The display control means is a control for stopping the volume data during the reciprocating rotation control on the condition of the number of reciprocations preset by the reciprocating rotation condition setting means or an operation condition for stopping the reciprocating rotation of the input means by the operator. The image processing apparatus according to any one of claims 1 to 5 , wherein An X-ray diagnostic apparatus comprising the image processing apparatus according to any one of claims 1 to 6 . X-ray generation means for irradiating the subject with X-rays;
X-ray detection means for detecting the X-ray;
Holding means for holding and moving the X-ray generation means and the X-ray detection means;
A movement control means for controlling the movement of the holding means based on the stop angle of the volume data that can be rotated;
The X-ray diagnostic apparatus according to claim 7 , further comprising: The X-ray diagnostic apparatus according to claim 8 , further comprising display means for displaying the volume data that is stopped and the X-ray image of the subject generated at a position corresponding to the stop angle.

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