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乳腺X线图像结构扭曲检测的研究

DOI: 10.3724/SP.J.1004.2014.01764, PP. 1764-1772

Keywords: 乳腺X线图像,结构扭曲,相似度,相似度收敛指数

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Abstract:

?针对乳腺X线图像结构扭曲(Architecturaldistortion,AD)检测假阳性率偏高的问题,提出了一种新的乳腺X线图像结构扭曲检测方法——相似度收敛指数(Similarityconvergenceindex,SCI)方法.首先利用马氏距离比计算出毛刺的相似度,然后通过计算相似度加权的收敛指数增强放射状毛刺,最后提取出收敛指数的局部最大值作为候选点,并对这些候选点进行分类,检测出结构扭曲.该方法在Mini-MIAS(MammographicImageAnalysisSociety)乳腺图像和北京大学人民医院乳腺中心乳腺图像上进行验证,实验结果表明,本文提出的方法有效降低了假阳性率,同时适用于脂肪型乳腺X线图像和致密型乳腺X线图像.

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