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Left Ventricular Myocardial Segmentation in 3-D Ultrasound Recordings: Effect of Different Endocardial and Epicardial Coupling Strategies

机译:3-D超声记录中的左心室心肌分割:不同的心内膜和心外膜耦合策略的影响

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摘要

Cardiac volume/function assessment remains a critical step in daily cardiology, and 3-D ultrasound plays an increasingly important role. Though development of automatic endocardial segmentation methods has received much attention, the same cannot be said about epicardial segmentation, in spite of the importance of full myocardial segmentation. In this paper, different ways of coupling the endocardial and epicardial segmentations are contrasted and compared with uncoupled segmentation. For this purpose, the B-spline explicit active surfaces framework was used; 27 3-D echocardiographic images were used to validate the different coupling strategies, which were compared with manual contouring of the endocardial and epicardial borders performed by an expert. It is shown that an independent segmentation of the endocardium followed by an epicardial segmentation coupled to the endocardium is the most advantageous. In this way, a framework for fully automatic 3-D myocardial segmentation is proposed using a novel coupling strategy.
机译:心脏容量/功能评估仍然是日常心脏病学中的关键步骤,而3D超声起着越来越重要的作用。尽管自动心内膜分割方法的开发受到了广泛关注,但是尽管进行完整的心肌分割很重要,但关于心外膜分割的说法却不尽相同。在本文中,将心内膜和心外膜分割的不同耦合方式进行了对比,并与非耦合分割进行了比较。为此,使用了B样条显式活动曲面框架。使用27张3-D超声心动图图像来验证不同的耦合策略,并将其与专家对心内膜和心外膜边界的手动轮廓进行比较。显示出最有利的是,心内膜的独立分割,然后是与心内膜耦合的心外膜分割。通过这种方式,提出了使用新型耦合策略进行全自动3-D心肌分割的框架。

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