Convolution Neural Networks and Support Vector Machines for Automatic Segmentation of Intracoronary Optical Coherence Tomography

• 作者: Caining Zhang Dalin Tang David Molony Don P.Giddens Habib Samady Huaguang Li Jinde Cao Lambros Athanasiou Rencan Nie Xiaopeng Guo Xiaoya Guo
• 来源期刊: 分子与细胞生物力学(英文)
• 学科: 医学
• 关键词: ATHEROSCLEROTIC PLAQUES OCT CNN U-Net SVM segmentation
• 年，卷（期）: 2019,（2）
• 页码范围: 153-161
• 页数: 9页
• 分类号: R54

摘要

Cardiovascular diseases are closely associated with deteriorating atherosclerotic plaques.Optical coherence tomography(OCT)is a recently developed intravascular imaging technique with high resolution approximately 10 microns and could provide accurate quantification of coronary plaque morphology.However,tissue segmentation of OCT images in clinic is still mainly performed manually by physicians which is time consuming and subjective.To overcome these limitations,two automatic segmentation methods for intracoronary OCT image based on support vector machine(SVM)and convolutional neural network(CNN)were performed to identify the plaque region and characterize plaque components.In vivo IVUS and OCT coronary plaque data from 5 patients were acquired at Emory University with patient’s consent obtained.Seventy-seven matched IVUS and OCT slices with good image quality and lipid cores were selected for this study.Manual OCT segmentation was performed by experts using virtual histology IVUS as guidance,and used as gold standard in the automatic segmentations.The overall classification accuracy based on CNN method achieved 95.8%,and the accuracy based on SVM was 71.9%.The CNN-based segmentation method can better characterize plaque compositions on OCT images and greatly reduce the time spent by doctors in segmenting and identifying plaques.