title: Analysis of left ventricular surface deformation during isovolumic contraction.
abstract: The rapid pressure built-up in the left ventricular (LV) cavity is mainly due to the contraction of the helically oriented myocardial fibers, and its associated wall deformation. In this paper, we recover and elucidate the left ventricular wall motion during isovolumic contraction using a shape-based tracking approach. In particular, the LV surface properties are derived by means of local surface fitting, and the point-correspondences between successive time frames are determined using a thin plate bending model. Results show that the LV motion during isovolumic contraction is largely contributed by the twisting action of the LV.
authors.affiliation: Institute of High Performance Computing, A*Star, 1 Science Park Road, #01-01 The Capricorn, Singapore Science Park II, Singapore 117528, Singapore. yeosy@ihpc.a-star.edu.sg
authors.forename: Si Yong
authors.initials: SY
authors.lastname: Yeo
authors.forename: Liang
authors.initials: L
authors.lastname: Zhong
authors.forename: Yi
authors.initials: Y
authors.lastname: Su
authors.forename: Ru San
authors.initials: RS
authors.lastname: Tan
authors.forename: Dhanjoo N
authors.initials: DN
authors.lastname: Ghista
mesh_terms: D006352:Heart Ventricles / Q000000981:diagnostic imaging*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008279:Magnetic Resonance Imaging; D008955:Models, Cardiovascular; D009200:Myocardial Contraction; D011859:Radiography; D016277:Ventricular Function, Left