基于局部Chan-Vese模型的超声颈动脉图像水平集分割
首发时间:2013-01-31
摘要:心血管疾病是世界上三大致死疾病之一。动脉粥样硬化会引发多种心脑血管疾病,动脉粥样硬化斑块是其最主要的病理形态学改变。本文对超声主颈动脉(CCA,Common Carotid Artery)横向图像中血管的内外膜进行分割,结果可用于对斑块大小、厚度和形状的定性估计及定量测量。本文选用局部C-V(LCV,Local Chan-Vese)模型分割外膜;C-V模型分割内膜;引入内外膜距离限制项限制内膜的演化,并用稀疏场方法(SFM,Sparse Field Method)提高水平集算法的效率;通过全正交法(FOM,Full-Orthogonal Method)、射线法、相似系数分析法等对结果进行分析比较。实验结果表明,LCV模型可有效地分割颈动脉血管外膜,C-V模型可以有效地分割血管内膜,改进方法提升了程序运行速度,提高了内膜的分割精度。
关键词: 生物医学工程 图像分割 颈动脉超声图像 水平集 局部C-V模型 稀疏场算法
For information in English, please click here
Ultrasound carotid image segmentation using level set method based on local Chan-Vese model
Abstract:Cardiovascular disease is one of the three major killer diseases in the world. Atherosclerosis will lead to a variety of cardiovascular and cerebrovascular diseases. Atherosclerotic plaques is the major pathological changes of atherosclerotic.The segmentation of intima and adventitia of Common Carotid Artery(CCA) is the main work, and the result can be used for qualitative estimates and measurements of plaque size, thickness and shape. The paper chose Local C-V model to segment the adventitia and C-V model to segment the intima.Distance Limitations Item was proposed to limit the evolution of the intima,and Sparse Field Method(SFM) was used to improve the efficiency of the level set method.The result was analyzed and compared by full-orthogonal method (FOM), ray method and Dice index.The results indicate that the LCV model can effectively segment the adventitia of the carotid artery;C-V model can effectively segment the intima;Improved methods can increase the speed of the program's running and improve the accuracy of segmentation of the intima.
Keywords: Biomedical Engineering Image segmentation Carotid ultrasound images Level set Local C-V model Sparse Field Method
基金:
论文图表:
引用
No.****
同行评议
共计0人参与
勘误表
基于局部Chan-Vese模型的超声颈动脉图像水平集分割
评论
全部评论0/1000