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    • 3. 发明申请
    • SYSTEM AND METHOD FOR FALSE POSITIVE REDUCTION IN COMPUTER-AIDED DETECTION (CAD) USING A SUPPORT VECTOR MACHINE (SVM)
    • 使用支持向量机(SVM)的计算机辅助检测(CAD)中的虚拟正减少的系统和方法
    • WO2006054269A2
    • 2006-05-26
    • PCT/IB2005053824
    • 2005-11-18
    • KONINKL PHILIPS ELECTRONICS NVBOROCZKY LILLAZHAO LUYINLEE KWOK PUN
    • BOROCZKY LILLAZHAO LUYINLEE KWOK PUN
    • G06K9/6228
    • A method for computer aided detection (CAD) and classification of regions of interest detected within HRCT medical image data includes post-processing machine learning to maximize specificity and sensitivity of the classification to realize a reduction in number of false positive detections reported. The method includes training a classifier on a set of medical image training data selected to include a number of true and false regions, wherein the true and false regions are identified by a CAD process, and automatically segmented, wherein the segmented training regions are reviewed by at least one specialist to classify each training region for its ground truth, i.e., true or false, essentially qualifying the automatic segmentation, wherein a feature pool is identified and extracted from each segmented region, and wherein the pool of features is processed by genetic algorithm to identify an optimal feature subset, which subset is used to train a support vector machine, detecting, within non- training medical image data, regions that are candidates for classification, segmenting the candidate regions, extracting a set of features from each segmented candidate regions and classifying the candidate region using the support vector machine after training in accordance with the optimal feature subset, and processing the set of candidate features.
    • 在HRCT医学图像数据中检测到的计算机辅助检测(CAD)和感兴趣区域分类的方法包括后处理机器学习,以最大限度地提高分类的特异性和灵敏度,实现报告的假阳性检测数量的减少。 该方法包括对选择包括多个真假区域的一组医学图像训练数据对分类器进行训练,其中真实区域和假区域由CAD过程识别并自动分段,其中分割的训练区域由 至少一名专家将每个训练区域分类为其真实的,即真实的或虚假的,基本上限定了自动分割,其中从每个分段区域识别和提取特征池,并且其中特征池通过遗传算法 识别最佳特征子集,该子集用于训练支持向量机,在非训练医学图像数据内检测作为分类候选的区域,分割候选区域,从每个分割的候选区域提取一组特征 并根据最优f对训练后使用支持向量机对候选区域进行分类 特征子集,并处理候选特征集合。