CTA three-dimensional reconstruction mirror image data 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, consistent viewpoint, and spatial relationship. correct effect
Inactive Publication Date: 2020-11-03
BEIJING FRIENDSHIP HOSPITAL CAPITAL MEDICAL UNIV
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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
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[0040] The technical content of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0041] In order to clearly illustrate the technical content of the present invention, the reasons for the fusion error between the CTA image and the CAG image are firstly introduced, and its influence on the CAG stereoscopic perception of the operator of the coronary intervention operation. However, the present invention only takes CTA images as an example, and is not limited to coronary artery intervention operations. As long as the images obtained by the DSA machine and the images obtained by the CT machine, the method provided by the present invention can be applied to achieve fusion. For example, using the images of the skeletal system, digestive system, reproductive system, urinary system, etc. obtained respectively by CT machine and DSA machine, the images of the same parts taken by these two devices are fused, a...
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The invention discloses a CTA three-dimensional reconstruction mirror image data projection method capable of being accurately fused with angiography, an image processing method and device. The projection 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 displayscreen 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 organ 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. According to the method, accurate fusion of the CTA reconstructed three-dimensional image and coronary angiography can be achieved, a coronary interventional operator can be helped to quickly establish stereoscopic perception of coronary angiography, the level of the coronary interventional operator is remarkably improved, the interventional operation difficulty is reduced, and prognosis of a patient is remarkably improved.
Description
technical field [0001] The invention relates to a projection method, image processing method and device for CTA three-dimensional reconstruction mirror data that can be accurately fused with angiography, and belongs to the technical field of medical image processing. Background technique [0002] Digital Subtraction Angiography (DSA) machine is an angiographic X-ray machine with digital subtraction function and pulse fluoroscopy function. It is mainly used for angiographic diagnosis and interventional treatment of heart, cerebrovascular and peripheral blood vessels. Real-time shooting and playback of images, as well as path indication of lesions can be performed. The DSA machine includes a rotatable frame (including C-arm and P-arm), a catheter bed that can move horizontally / vertically / up and down, a high-voltage generator, an X-ray tube, an image intensifier, a camera system (detector), and an image digital processing system, DSA display and external data storage system. ...
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Login to View More 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