title: Variational Reconstruction of Left Cardiac Structure from CMR Images.
abstract: Cardiovascular Disease (CVD), accounting for 17% of overall deaths in the USA, is the leading cause of death over the world. Advances in medical imaging techniques make the quantitative assessment of both the anatomy and function of heart possible. The cardiac modeling is an invariable prerequisite for quantitative analysis. In this study, a novel method is proposed to reconstruct the left cardiac structure from multi-planed cardiac magnetic resonance (CMR) images and contours. Routine CMR examination was performed to acquire both long axis and short axis images. Trained technologists delineated the endocardial contours. Multiple sets of two dimensional contours were projected into the three dimensional patient-based coordinate system and registered to each other. The union of the registered point sets was applied a variational surface reconstruction algorithm based on Delaunay triangulation and graph-cuts. The resulting triangulated surfaces were further post-processed. Quantitative evaluation on our method was performed via computing the overlapping ratio between the reconstructed model and the manually delineated long axis contours, which validates our method. We envisage that this method could be used by radiographers and cardiologists to diagnose and assess cardiac function in patients with diverse heart diseases.
authors.affiliation: Nanchang University, Nanchang, Jiangxi Province, P.R.China 330031.
authors.forename: Min
authors.initials: M
authors.lastname: Wan
authors.affiliation: Nanchang University, Nanchang, Jiangxi Province, P.R.China 330031.
authors.forename: Wei
authors.initials: W
authors.lastname: Huang
authors.affiliation: National Heart Centre Singapore, 5 Hospital Drive, Singapore 169609, Singapore.|Duke-NUS Graduate Medical School Singapore, 8 College Road, Singapore 169857, Singapore.
authors.forename: Jun-Mei
authors.initials: JM
authors.lastname: Zhang
authors.affiliation: National Heart Centre Singapore, 5 Hospital Drive, Singapore 169609, Singapore.
authors.forename: Xiaodan
authors.initials: X
authors.lastname: Zhao
authors.affiliation: National Heart Centre Singapore, 5 Hospital Drive, Singapore 169609, Singapore.|Duke-NUS Graduate Medical School Singapore, 8 College Road, Singapore 169857, Singapore.
authors.forename: Ru San
authors.initials: RS
authors.lastname: Tan
authors.affiliation: Nanchang University, Nanchang, Jiangxi Province, P.R.China 330031.
authors.forename: Xiaofeng
authors.initials: X
authors.lastname: Wan
authors.affiliation: National Heart Centre Singapore, 5 Hospital Drive, Singapore 169609, Singapore.|Duke-NUS Graduate Medical School Singapore, 8 College Road, Singapore 169857, Singapore.
authors.forename: Liang
authors.initials: L
authors.lastname: Zhong
mesh_terms: D000465:Algorithms; D006321:Heart / Q000033:anatomy & histology* / Q000502:physiology; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D019028:Magnetic Resonance Imaging, Cine / Q000379:methods*; D008955:Models, Cardiovascular