A method for measuring anatomical features of aortic complex

Abstract

The invention belongs to the field of medical technology, and specifically discloses a method for measuring the anatomical characteristics of the aortic complex, which collects CT angiography data in one cardiac cycle, performs image reconstruction according to 20 time phases, and then analyzes the CT angiography data of each time phase. The angiographic data is subjected to the following operations: segment the coronary tree and obtain the segmented three-dimensional coronary artery data set S; cut the sinus of Valsalvs to obtain the key plane and key parts of the sinus of Valsalvs; detect the ostium of the coronary artery; divide the sinus of Valsalvs transversely to determine the sinotubular junction plane, aortic annulus plane and mid-plane of the aortic sinus; the sinus of Valsalvs was divided vertically to divide the non-coronary sinus, right coronary sinus and left coronary sinus. The present invention can carry out 4D quantitative evaluation on the fine anatomy of the aortic root, and comprehensively evaluate the complex rotation, translation, and scaling motion modes of the aortic root. The statistical model established on this basis provides the parameters of the amplitude and range of motion, and can diagnose abnormalities. The situation provides an early warning and provides a basis for optimizing the surgical plan.

Description

technical field [0001] The invention relates to a method for automatically measuring anatomical features of a four-dimensional voxel model, in particular to a method for measuring anatomical features of an aortic complex. Background technique [0002] At present, with the emergence of minimally invasive surgical methods such as transcatheter aortic valve replacement (TAVR / TAVI), it is possible to reduce the surgical risk of patients with aortic stenosis and improve the postoperative quality of life of patients. However, TAVR / TAVI Complications such as aortic dissection, valve shedding and displacement, paravalvular leakage, atrioventricular block, coronary artery blockage, and even death are prone to occur later. Among them, the mismatch between the size of the prosthesis and the anatomical features of the patient's aortic complex is the main cause of its complications. [0003] Therefore, an accurate understanding and evaluation of the geometric and anatomical features of ...

AI Technical Summary

Problems solved by technology

[0006] 1. Only a single phase (systole or diastole) is processed, and complex positioning steps are involved. It takes 7 steps to accurately locate the annulus plane from the conventional imaging plane. The operation process is complicated, time-consuming and labor-intensive;

[0007] 2. A single measurement of the aortic anatomy during systole or diastole will lead to a large difference in the final measurement value. The 2019 expert consensus pointed out that the measurement of the size of the annulus should use the largest size in the entire cardiac cycle. However, The largest dimension of the aortic complex does not always occur during systole or diastole, making accurate measurements difficult;

[0008] 3. The accurate positioning of anatomical features mainly relies on the combination of image features and geometric features, and most of the existing technologies only use image features to measure the complex anatomical structure of the aortic root, which is prone to errors

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