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CTA three-dimensional reconstruction mirror image data image projection method, image processing method and device

A technology of mirror data and three-dimensional reconstruction, applied in the field of medical image processing, can solve the problems of discussing the essential difference between CAG and CTA, difficult for PCI operators to understand and accept, complicated operation process, etc., to achieve convenient treatment plan, reduce the difficulty of interventional surgery, The effect of correct spatial relationship

Pending Publication Date: 2021-08-24
BEIJING FRIENDSHIP HOSPITAL CAPITAL MEDICAL UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Furthermore, these methods do not address the essential differences between CAG and CTA from the perspective of the PCI operator
The resulting fusion image is the superposition of various complex algorithms, the operation process is complicated, the precision is low, and it is difficult for PCI surgeons to understand and accept

Method used

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  • CTA three-dimensional reconstruction mirror image data image projection method, image processing method and device
  • CTA three-dimensional reconstruction mirror image data image projection method, image processing method and device
  • CTA three-dimensional reconstruction mirror image data image projection method, image processing method and device

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no. 1 example

[0057] The CTA three-dimensional fusion method capable of precise fusion with angiography according to the first embodiment of the present invention includes the following steps.

[0058] S1: Obtain 3D reconstruction image data

[0059] Import the 3D reconstruction image data obtained from CT scanning, such as CTA 3D data, into UG NX11.0 or other 3D software. Thus, the CTA three-dimensional data of the spine and the CTA three-dimensional data of the location of the lesion can be obtained. The CTA three-dimensional data of the spine, thoracic spine, ribs, etc. are used as reference positions for the position of the CTA three-dimensional data of the lesion, but the spine is given priority. In other words, the relative position of the lesion (relative to the position of the spine) is the key position information for reconstruction. Here, the lesion may be the heart, or the kidney, or the like.

[0060] S2: Set the image projection mode of CTA 3D reconstruction mirror data to p...

no. 2 example

[0090] The CTA three-dimensional fusion method for precise fusion with angiography in the second embodiment of the present invention includes the following steps.

[0091] S1: Obtain 3D reconstruction image data

[0092] Similar to the first embodiment, the three-dimensional CTA data of the electrodes and the three-dimensional CTA data of the location of the lesion can be obtained. During CT scan, stick the upper and lower electrodes on the patient's thoracic spine (the lower electrode corresponds to the xiphoid process, and the distance between the two electrodes is about 13 cm), and accurately record the position of the electrodes. CT scanning was completed at the end of expiration to remove respiratory interference and reconstruct the electrodes to obtain the connection line in the CT three-dimensional reconstruction graphics of the two electrodes.

[0093] Step S2 is the same as the steps in the first embodiment, and will not be repeated here.

[0094] S3: Correct the di...

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Abstract

The invention discloses a CTA three-dimensional reconstruction mirror image data image projection method. The method comprises the following steps: obtaining CTA three-dimensional reconstruction mirror image data; setting an image projection mode of the CTA three-dimensional reconstruction mirror image data as a perspective projection mode; correcting the distance from the projection center of the perspective projection of the CTA three-dimensional reconstruction mirror image data to the DSA display screen into the distance from the X-ray tube ball to the detector; correcting the distance from the projection center of the perspective projection of the CTA three-dimensional reconstruction mirror image data to the target position into the distance from the X-ray tube ball to the catheter bed; and overlapping the screen center of the perspective projection of the CTA three-dimensional reconstruction mirror image data with the center of the DSA contrast image. By the adoption of the technology, the body position of the patient in the DSA operation is consistent with the body position of the patient in the CT examination, and the three-dimensional reconstructed CTA image and the DSA image can achieve accurate fusion, correct registration, consistent viewpoints, correct spatial relation and no image distortion. Meanwhile, the interventional operation difficulty can be reduced, and the prognosis of a patient is obviously improved.

Description

technical field [0001] The present invention relates to a CTA three-dimensional reconstruction mirror data image projection method, image processing method and device, in particular to a CTA three-dimensional reconstruction mirror data image projection method, image processing method and device that can be accurately integrated with angiography, and belongs to medical image processing technology field. Background technique [0002] Digital subtraction angiography (DSA) is an angiographic X-ray machine with digital subtraction function and pulse fluoroscopy function. It is mainly used for angiographic diagnosis and interventional therapy of the heart, cerebrovascular, and peripheral blood vessels. It can perform real-time shooting and playback of images during cardiovascular surgery, as well as path indication of lesions. The use of DSA machines (C-arm machines) can reduce the radiation of X-rays to patients and surgeons, so it has become increasingly popular in recent years...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/50G06T17/00A61B6/00A61B6/03A61B6/04
CPCG06T5/50G06T17/00A61B6/504A61B6/481A61B6/032A61B6/505A61B6/44A61B6/466A61B6/0407G06T2207/20221G06T2207/30012G06T2207/30101
Inventor 陈淼
Owner BEIJING FRIENDSHIP HOSPITAL CAPITAL MEDICAL UNIV
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