Title :
Three dimensional analysis of cardiac shape and load using tagged magnetic resonance imaging
Author :
Petrank, Yael Fisher ; Dong, Sheng Jing ; Tyberg, John V. ; Sideman, Samuel ; Beyar, Rafael
Author_Institution :
Julius Silver Inst., Technion-Israel Inst. of Technol., Haifa, Israel
Abstract :
Three dimensional (3D) reconstructions of the heart from sets of two dimensional (2D) tagged magnetic resonance imaging (MRI) cross sections, were used to characterize the 3D geometry of the left ventricles in patients with hypertrophic cardiomyopathy (HCM) and patients with right ventricular pressure overload (RVPO). Curvatures, stresses, wall thickness and endocardial motion were calculated from surface and volume elements. Hearts with RVPO exhibited more circumferential and meridional flattening of the septum than normal and HCM hearts. The stress indices were lowest in the HCM hearts, compared to normal and RVPO hearts, due to the larger thicknesses. There was a more significant difference between lateral wall motion, and other regional wall motions in the HCM and RVPO hearts as compared to normal hearts. It is suggested that curvature and stress mapping by 3D tagged MRI can be advantageously used as an important clinical tool.<>
Keywords :
biomedical NMR; cardiology; image reconstruction; medical image processing; 3D geometry characterization; cardiac load; cardiac shape; circumferential flattening; clinical tool; endocardial motion; hypertrophic cardiomyopathy patients; left ventricles; medical diagnostic imaging; meridional flattening; right ventricular pressure overload patients; stress indices; tagged magnetic resonance imaging; three dimensional analysis; wall thickness; Aging; Cardiac disease; Cardiology; Heart; Image analysis; Image reconstruction; Magnetic analysis; Magnetic resonance imaging; Shape; Stress;
Conference_Titel :
Computers in Cardiology 1994
Conference_Location :
Bethesda, MD, USA
Print_ISBN :
0-8186-6570-X
DOI :
10.1109/CIC.1994.470212
