title: Robust boundary detection of left ventricles on ultrasound images using ASM-level set method.
abstract: Level set method has been widely used in medical image analysis, but it has difficulties when being used in the segmentation of left ventricular (LV) boundaries on echocardiography images because the boundaries are not very distinguish, and the signal-to-noise ratio of echocardiography images is not very high. In this paper, we introduce the Active Shape Model (ASM) into the traditional level set method to enforce shape constraints. It improves the accuracy of boundary detection and makes the evolution more efficient. The experiments conducted on the real cardiac ultrasound image sequences show a positive and promising result.
authors.affiliation: Sino-Dutch Biomedical and Information Engineering School, Northeastern University, Shenyang, China.
authors.forename: Yaonan
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Sino-Dutch Biomedical and Information Engineering School, Northeastern University, Shenyang, China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Gao
authors.affiliation: Sino-Dutch Biomedical and Information Engineering School, Northeastern University, Shenyang, China.
authors.forename: Hong
authors.initials: H
authors.lastname: Li
authors.affiliation: Sino-Dutch Biomedical and Information Engineering School, Northeastern University, Shenyang, China.
authors.forename: Yueyang
authors.initials: Y
authors.lastname: Teng
authors.affiliation: Sino-Dutch Biomedical and Information Engineering School, Northeastern University, Shenyang, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Kang
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D004452:Echocardiography / Q000379:methods*; D006352:Heart Ventricles / Q000000981:diagnostic imaging*; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008955:Models, Cardiovascular; D010363:Pattern Recognition, Automated / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D059629:Signal-To-Noise Ratio; D018487:Ventricular Dysfunction, Left / Q000000981:diagnostic imaging*
keywords: Level set method; active shape model; image segmentation