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NONRIGID REGISTRATION METHOD AND SYSTEM WITH DENSITY CORRECTION OF EACH TISSUE AND RIGIDITY CONSTRAINT OF TUMOR IN DYNAMIC CONTRAST-ENHANCED BREAST MR IMAGES
NONRIGID REGISTRATION METHOD AND SYSTEM WITH DENSITY CORRECTION OF EACH TISSUE AND RIGIDITY CONSTRAINT OF TUMOR IN DYNAMIC CONTRAST-ENHANCED BREAST MR IMAGES
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机译：动态对比增强型MR图像中每个组织的密度校正和肿瘤刚性约束的非刚性配准方法及系统
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摘要
PURPOSE: A nonrigid registration method and system applying the tumor rigidity constraint and the density correction of each tissue in a dynamic contract enhanced breast MR image are provided to accurately classify a tissue by regularizing a contrast density. CONSTITUTION: A breast region is automatically divided by removing a breast skin and a pectoral(S110). A fuzzy C-means grouping method is used in the divided breast region. A breast tissue is classified into fat, the mammary gland, a tumor, and a blood vessel(S120). The tumor is divided by using a density and a morphological operation(S130). The density is corrected in the fat and the mammary gland(S140). [Reference numerals] (AA) Start; (BB) End; (S110) Breast division based on slope and direction information; (S120) Tissue classification using a fuzzy C-means grouping method; (S130) Tumor division based on brightness value and shape information; (S140) Rigid body matching based on normalized mutual information and brightness value correction; (S150) Non-rigid body matching applying tumor rigid constraints;
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