1353 MR tagging 法を用いた疾患心の左室壁変形挙動解析

Abstract

In order to understand the cardiac function, it is considered that to evaluate the heart wall motion from a mechanical point of view is important. In this research work, we tried to analyze the left ventricular systolic motion in ten normal volunteers and four patients with left bundle branch block using the magnetic resonance tagging technique. The circumferential strain in cardiac coordinate system at short axis section was used to estimate cardiac contractility. The results showed that the circumferential strains of patients with left bundle branch block were different in those of normal volunteers. This study suggests that the circumferential strain could be a quit effective parameter to evaluate the cardiac contractility.