比较MRI、64层CT和双源CT(DSCT)对活动性心脏仿真模型全心功能指标的评估。使用3种不同的影像检查设备,采用临床常规扫描方案,对容量为215～258mL、搏动频率为50～100次/min的活动性心脏仿真模型进行扫描,2位有经验的观测者用专用后处理工具计算其舒张末期和收缩末期的容量,用Bland-Altman法计算和比较射血分数(EF)和心排出容量(CO)。B-A间期[-4.35(-2.48)-0.60]情况下,MRI低估EF值16.1%; MRI, 64-slice CT and dual-source CT (DSCT) were used to assess cardiac function in patients with active heart simulations. Three different types of imaging equipment were used to scan the active cardiac simulation model with capacity of 215 ~ 258mL and pulsation frequency of 50 ~ 100 beats per minute using a clinical routine scanning protocol. Two experienced observers The treatment tools calculate the end-diastolic and end-systolic volumes, and the ejection fraction (EF) and cardiac output (CO) were calculated and compared using the Bland-Altman method. In the case of B-A interval [-4.35 (-2.48) -0.60], MRI underestimated the EF value by 16.1%;