Breast X-ray image registration method and system based on barycenter

Abstract

The invention discloses a breast X-ray image registration method based on barycenter. The method includes the steps that left-breast X-ray image DICOM data to be registered and right-breast X-ray image DICOM data to be registered are loaded; window width and window level transformation is performed on original left-breast X-ray image DICOM data and original right-breast X-ray image DICOM data respectively to obtain a transformed left-breast image and a transformed right-breast image; a barycentric coordinate R1 of the transformed left-breast image and a barycentric coordinate Rr of the transformed right-breast image are calculated; the transformed left-breast image or the transformed right-breast image is selected as a moving image Imgs, and the other image is used as a template image Imgd; the horizontal moving amount is calculated, the moving image Imgs is made to move horizontally so as to enable the left-breast image and the right-breast image to be aligned; a registered breast image is displayed. According to the method and system, registering alignment of a left breast and a right breast is achieved by moving the breasts horizontally according to the distance difference of barycenter positions of the left-breast image and the right-breast image, and the registered and aligned breast image is obtained, so that doctors can perform contrastive analysis conveniently.

Description

technical field [0001] The invention belongs to the technical field of digital image processing, and in particular relates to a centroid-based mammogram image registration method and a registration system. Background technique [0002] Breast disease is a disease that seriously endangers women's health. At present, breast cancer has accounted for about 30% of new malignant tumors in women, ranking first in the incidence of female malignant tumors. Mammography (Mammography) uses a special molybdenum-palladium X-ray machine to take pictures of the breast to form a mammogram. Currently, using mammography as the basic data for breast disease research has become the most common method in developed countries. . In the process of breast disease research, it is usually necessary to compare and analyze the left and right mammogram images (referred to as breast images), and if necessary, to compare and analyze the breast images taken by the same patient at different periods. However...

AI Technical Summary

Problems solved by technology

The feature matching method based on key information first calculates the nipple position and contour information on the breast image, and calculates the texture features and contour features of the relevant positions. When these features of the left and right breasts match, the left and right breasts are considered to have reached the registration position; this method It is necessary to pre-calculate the nipple position and contour information. If the information is calculated incorrectly, it will directly lead to the failure of the final registration result, and its robustness is poor; the method based on the gray value of the image takes a breast image as a reference image, and the other A breast image or a part of it is used as a floating image to traverse the reference image, and find the position where the mutual information (Mutual Information) of the reference image and the floating image is the largest

The disadvantage of this method is that it needs to loop through all breast images, the amount of calculation is very large, and the processing speed is very slow, making it difficult to meet the real-time requirements

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