Pericardium Segmentation Method Based on CT Sequence and Method of Roughly Locating Pericardium Region from Pericardium Sequence Central Slice

Abstract

The pericardial segmentation method based on CT sequence and the method of roughly locating the pericardial area from the central layer slice of the pericardial sequence belong to the field of medical image processing. In order to improve the accuracy of pericardial positioning, in the central layer, the interfering tissue area is removed by thresholding and retained. Contain the connected region of the pericardium, obtain the binary image that contains the pericardium; Calculate the approximate center and radius of the pericardium center layer slice to the described binary image; The center of circle and the radius of the center layer slice are equivalent to the center and radius of the pericardium sphere Radius, determine the boundary of the entire pericardial body, and roughly locate the entire pericardial area. The effect is to determine the specific characteristics of the single layer of the sequence, reduce the interference of the surrounding tissue on the pericardium, and combine the three-dimensional features of CT to perform accurate pericardial segmentation to obtain the final inclusion. Vascular pericardial segmentation sequence.

Description

technical field [0001] The invention belongs to the field of medical image processing, and in particular relates to a method for segmenting the pericardium based on a CT sequence and a method for roughly locating the pericardium region from the central slice of the pericardium sequence. Background technique [0002] The heart is an important organ of the human body. Its function is to push blood through the blood vessels in the circulatory system. In recent years, the number of patients with cardiovascular diseases such as coronary heart disease has been increasing year by year, and they all rely on cardiovascular CT (computerized tomography) or cardiac angiography for diagnosis in the early stage. The structure of the heart is complex, the head end of the heart tube is connected to the artery, and the tail end is connected to the vein. The pericardial sequence obtained by CT equipment is interfered by the lungs, liver, bone tissue, diaphragm, air bubbles, etc. The pericard...

AI Technical Summary

Problems solved by technology

Pericardial tissue range is different, making it difficult to locate the pericardium

Moreover, there is no fixed threshold for pericardial tissue, and the CT value after angiography is relatively high. It is difficult to accurately segment the pericardium with a single segmentation method.

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