Automatic positioning device for TAVI preoperative key target and method thereof

Abstract

The invention discloses an automatic positioning device for a TAVI preoperative key target and a method thereof, and relates to the technical field of medical image processing. The device comprises a data acquisition module for acquiring heart CTA data; a data extraction module used for extracting data required for key target positioning from the heart CTA data; and a key target positioning module used for positioning a key target required before the TAVI operation and outputting a positioning result. The method comprises the following steps: acquiring the heart CTA data; segmenting the aorta and the coronary artery; positioning left and right coronary artery opening positions and determining an aorta center line; sampling points on the center line to obtain cross sections with segmentation results on the center line by taking each sampling point as the center, wherein the normal of each cross section corresponds to the tangent line of the sampling point; determining a segmentation plane of the aorta from each aorta cross section with the segmentation result to obtain a series of aorta planes; and positioning an aortic sinus tube junction plane, an aortic annulus plane, an ascending aortic plane, and an aortic sinus annulus plane from the aortic plane.

Description

technical field [0001] The invention relates to the technical field of medical image processing, in particular to an automatic positioning device and method for key targets before TAVI operation. Background technique [0002] With the development trend of my country's aging society, the incidence of valvular degeneration in the elderly is increasing, and aortic valve stenosis has gradually become the most common valvular heart disease in this population. For patients with severe aortic stenosis, transcatheter aortic valve implantation (Transcatheter Aortic Valve Implantation, TAVI) is an effective treatment. TAVI was first started in 2002. The latest research shows that for patients with severe aortic stenosis, TAVI can reduce the mortality rate by 46% compared with drug therapy, and significantly improve the quality of life of patients. [0003] Before TAVI, the surgeon needs to measure some key parameters to plan the operation and match the suitable artificial valve ring....

AI Technical Summary

Problems solved by technology

However, these post-processing target positioning platforms are all semi-automatic positioning methods, which still require a certain amount of manual interaction, such as requiring the user to locate the key plane by rotating the cross positioning line, or requiring the user to manually outline the key target on the plane, etc.

So far, no literature has provided a fully automatic multiple key target positioning device and method for performing TAVI from cardiac CTA images without any manual interaction

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