JPH03128045A - X-ray diagnosing device - Google Patents

Abstract

PURPOSE:To display a scan image with a stable display position even if a living body moves, by correcting the scan image information after the shift of the living body on the basis of the detection information of the three-dimensional position in the initial state of the living body and after shift, so that the display position of the scan image information in the initial state does not shift. CONSTITUTION:When X-rays are irradiated to a detection surface 4a from an X-ray source 2a, a three-dimensional position detecting means 8 successively reads out the second-dimensional position information Xa-Xd, Xa'-Xd' which is contrast-formed on the detection surface 4a by the contrast plates 3a-3d and 3a'-3d' arranged in three- dimensional form, and sends out the position information Xa-Xd of a patient P in the initial state into an initial position memory means 9 on the basis of the operation of a keyboard 7. The position information Xa'-Xd' of the patient P' who moves from the initial position is successively sent into a correcting means 10. The correcting means 10 corrects an image G' after movement of the body so that the display position of a scan image in the initial state does not shift on the basis of the position information Xa-Xd supplied from an initial position memory means 9 and the position information Xa'-Xd' supplied from a three-dimension position detecting means 8 and displayed in the second display part 5b.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to an X-ray diagnostic apparatus capable of performing fluoroscopic imaging, and more specifically to an X-ray diagnostic apparatus equipped with a body motion correction function.

(Prior Art) An X-ray diagnostic apparatus equipped with two CRT displays has been known.

For example, when treating a patient with a blood vessel abnormality, a contrast medium is injected into the blood vessel and photographed, and a still image clearly showing the position of the blood vessel is displayed on one CRT display of this device.

Next, the doctor removes the contrast agent from the blood vessel and begins treatment of the vascular abnormality.

The other CRT display of this device displays a real-time fluoroscopic image of the patient after the contrast agent has been removed. Since the catheter is shown in this fluoroscopic image, the doctor uses the blood vessel image shown in the previously obtained still image as a guide to insert the catheter into the patient's blood vessel to the abnormal vascular site and perform treatment.

(Problem to be solved by the invention) However, when the patient moves during treatment, the display position of the fluoroscopic image changes (
. For this reason, there is a problem in that the still image used as a guide for catheter insertion and the fluoroscopic image are misaligned, making it impossible to accurately insert the catheter into the desired position.

Therefore, the present invention has been made in view of the above circumstances, and
An object of the present invention is to provide an X-ray diagnostic apparatus that can display a fluoroscopic image with a stable display position even when a living body moves.

[Structure of the Invention] (Means for Solving the Problem) In order to achieve the above object, the present invention provides an X-ray diagnosis that displays a fluoroscopic image based on fluoroscopic image information obtained by irradiating a living body with X-rays. The apparatus includes an X-ray detection means for transmitting fluoroscopic image information of the living body, a three-dimensional position detection means for detecting the three-dimensional position of the living body, and an initial state position of the living body output from the three-dimensional position detection means. Based on the initial position storage means for storing information, the position information of the displaced state of the living body detected by the three-dimensional position detection means, and the position information of the initial state stored in the initial position storage means, the X-ray The present invention is characterized by comprising a correction means for correcting the fluoroscopic image information sent from the detection means so that the display position of the fluoroscopic image in the initial state is not displaced.

(for production) The operation of the apparatus having the above configuration will be explained below.

The three-dimensional position detection means of this device detects the three-dimensional position of the living body. Among the position information detected by the three-dimensional position detecting means, the position information in the initial state is sent to the initial position storage means and stored therein, and the position information in the displaced state of the living body is sent to the correction means.

The correction means is configured to perform fluoroscopic imaging transmitted from the X-ray detection means based on the position information of the displaced state of the living body detected by the three-dimensional position detection means and the position information of the initial state stored in the initial position storage means. Image information is corrected so that the display position of a fluoroscopic image in an initial state is not displaced.

(Example) Examples of the present invention will be described in detail below.

FIG. 1 shows an overall block diagram of an apparatus 1 according to an embodiment of the present invention.

This device 1 includes an X-ray tube device 2 that generates X-rays, and a plurality of (four in this example) contrast plates 3 as three-dimensional position detection means arranged at predetermined positions on the body surface of the patient P. , an X-ray detection means 4 for detecting X-rays transmitted through the patient P, a display means 5 for displaying an image based on fluoroscopic image information sent from the X-ray detection means 4, and a microprocessor. In addition to controlling each part, the three-dimensional position of the patient P is detected, and based on this detected information, the display position of the fluoroscopic image of the patient P in the initial state is changed based on the fluoroscopic image information sent from the X-ray detection means 4. a central control unit 6 that corrects the
It has a keyboard 7 that allows operations such as starting and ending photography.

The X-ray detection means 4 includes, for example, an image intensifier that emits fluorescence upon receiving X-rays, and an imaging means such as a COD camera.

The display means 5 comprises a first display section 5a, such as a CRT display, for displaying still images, and a second display section 5b, such as the same CRT display, for displaying real-time perspective images.

The central control unit 6 includes a three-dimensional position detecting means 8 for detecting the three-dimensional position of the patient P, and an R for storing position information of the initial state of the patient P output from the three-dimensional position detecting means 8.
Based on the initial position storage means 9 consisting of AM etc., the position information of the displaced state of the patient P detected by the three-dimensional position detection means 8, and the position information of the initial state stored in the initial position storage means 9. , a correction means 10 for correcting the fluoroscopic image information sent from the X-ray detection means 4 so that the display position of the fluoroscopic image in the initial state is not displaced.

The first display section 5a and the second display section 5b can be selected by operating the keyboard 7, and when the first display section 5a is selected, the X-ray detection means at the moment of selection is selected. The perspective image information sent from 4 is displayed on the first display section 5a as a still image.

Next, when the second display section 5b is selected, the initial fluoroscopic image information of the fluoroscopic image information sent from the X-ray detection means 4 is subjected to position detection processing as image information in the initial state,
The subsequent image information is displayed on the second display section 5b as a real-time perspective image.

FIG. 2 shows a transparent state of the contrast plate 3.

The three-dimensional position detecting means 8 is an X-ray source 2 of the X-ray tube device 2.
When X-rays are irradiated radially from a to the detection surface 4a of the X-ray detection means 4, each of the three-dimensionally arranged contrast plates 3a to 3
d, 3a' to 3d' are the two-dimensional positional information Xa to Xd, Xa' to
The image information sent from the line detection means 4 can be sequentially read. Furthermore, this three-dimensional position detection means 8
Based on the operation of the keyboard 8, the position information Xa to Xd of each of the contrast plates 3a to 3d for the patient P in the initial state is sent to the initial position storage means 9, and the position information Positional information Xa to Xd' of each of the contrast plates 3a' to 3d' is sequentially sent to the correction means 10.

The correction means 10 uses the position information Xa to Xd of the initial state of the patient P stored in the initial position storage means 9 and the position information of the patient P' whose body has moved from the initial position sequentially sent from the three-dimensional position detection means 8. Based on the positional information Xa' to is displayed on the display section 5b. That is, this correction means 10 estimates the three-dimensional displacement of the patient P' after the body movement based on the position information Xa to Xd and the position information Xa' to Xd', and estimates the three-dimensional displacement of the patient P' after the body movement.
The position of the patient P is virtually returned to the position of the patient P in the initial state, and correction is made so that the position information Xa' to Xd' after the body movement overlaps the position information Xa to Xd in the initial state on the detection surface 4a. ing.

Next, the operation of the present device (2) will be explained with reference to FIGS. 4 and 5, taking as an example a case where a patient with blood vessel abnormality is treated.

The doctor attaches four contrast plates 3 to predetermined positions on the body surface of the patient P, and attaches the patient P to the X-ray tube device 2 and the X-ray detection means 4.
Place it between. Next, the doctor injects a contrast medium into the patient P's blood vessel. Next, the doctor operates the keyboard 7 to transmit X-rays from the X-ray tube device 2 to the patient P under the control of the central control unit 6.
irradiate it towards.

The X-ray detection means 4 sends the fluoroscopic image information obtained using this contrast agent to the three-dimensional position detection means 8 and the display means 5 side.

The doctor also operates the keyboard 7 to display the fluoroscopic image information obtained using the contrast agent as a still image on the first display section 5a. A still image G1 in which blood vessels are emphasized is displayed on the first display section 5a, as shown on the left side of FIG. Note that the locations marked with an x in FIGS. 4 and 5 indicate abnormal portions of blood vessels.

The three-dimensional position detection means 8 sends position information Xa to Xd of the contrast plates 3a to 3d to the initial position storage means 9 based on the fluoroscopic image information of the initial state of the patient P sent from the X-ray detection means 4.

Next, the doctor removes the contrast medium from the patient P's blood vessel and begins treatment of the vascular abnormality. The doctor operates the keyboard 7 to perform real-time fluoroscopic imaging.

As described above, the X-ray detection means 4 sends real-time fluoroscopic image information to the three-dimensional position detection means 8 and the display means 5. The three-dimensional position detecting means 8 detects each of the contrast plates 3a' to 3 in the patient P' who has subsequently moved from the initial position.
The positional information Xa' to Xd' of d' is sequentially corrected by means 10.
The correction means 10 sends out the initial state position information Xa to Xd of the patient P stored in the initial position storage means 9 and the patient P's body movement from the initial position sequentially sent out from the initial three-dimensional position detection means 8. P' position information Xa' to Xd'
Based on this, the fluoroscopic image information sent from the X-ray detection means 4 is corrected so that the display position of the fluoroscopic image G2 in the initial state is not displaced as shown in FIG.
to be displayed.

Next, the doctor uses the blood vessel shown in the still image G1 displayed on the first display section 5a of FIG. 5 as a guide to view the fluoroscopic image G2 displayed on the second display section 5b of FIG. Treatment is performed by inserting the catheter into the patient's blood vessel up to the vascular abnormality x while observing.

Although one embodiment has been described above, the present invention is not limited to this, and various modifications can be made without changing the gist thereof.

For example, although a plurality of contrast plates are used, a single ring-shaped plate may also be used.Also, the contrast plate may be made into an anisotropic shape and the rotation angle of the area to which it is pasted can be detected. Good too.

[Effects of the Invention] According to the present invention described in detail above, the initial state and the three-dimensional position of the living body after displacement are detected by the three-dimensional position detection means,
Based on this information, the correction means corrects the fluoroscopic image information after the displacement of the living body so that the display position of the fluoroscopic image information in the initial state does not shift, so the display position remains stable even if the living body moves. Accordingly, it is possible to provide an X-ray diagnostic apparatus that can display a transparent fluoroscopic image.

[Brief explanation of the drawing]

FIG. 1 is an overall block diagram of a device according to an embodiment of the present invention, and FIG.
The figure is an explanatory diagram showing the transparent state of the contrast plate of this device, FIG. 3 is an explanatory diagram showing body movement correction by the correction means, and FIGS. 4 and 5 are images displayed on the display section of this device. It is an explanatory diagram. 1... X-ray diagnostic device, 3.3a to 3d... Contrast plate (three-dimensional position detection means), 4... X-ray detection means, 6... Three-dimensional position detection means, 9... Initial position storage means, 10... Correction means, G, G2...
Fluoroscopic image, P...patient (living body). Diagram

Claims (1)

[Scope of Claims] (1) In an X-ray diagnostic apparatus that displays a fluoroscopic image based on fluoroscopic image information obtained by irradiating a living body with X-rays, an X-ray detection means for transmitting fluoroscopic image information of the living body. , a three-dimensional position detection means for detecting the three-dimensional position of the living body;
an initial position storage means for storing position information of the initial state of the living body outputted from the dimensional position detection means; and a position information of the displaced state of the living body detected by the three-dimensional position detection means and stored in the initial position storage means. and correction means for correcting the fluoroscopic image information sent from the X-ray detection means so that the display position of the fluoroscopic image in the initial state is not displaced, based on the position information in the initial state. X-ray diagnostic equipment. (2) The X-ray diagnostic apparatus according to claim 1, wherein the three-dimensional position detection means includes a plurality of contrast plates arranged at predetermined positions on the body surface of the living body. (3) Claim 1 or 2, wherein the three-dimensional position detection means includes a contrast plate having an anisotropic shape and arranged on the body surface of the living body.
The X-ray diagnostic device described. (4) The X-ray diagnostic apparatus according to claim 1, wherein the three-dimensional position detection means includes a ring-shaped contrast body placed on the body surface of the living body.