目的 探讨MRI在评估原发性扩张 型心肌病患者左、右心室功能中的应用价 值。方法 比较80例原发性扩张型心肌病 (IDCM)患者(观察组)与80例健康志愿者 (对照组)血压、心率(HR)及左右心室功能 参数MRI检查结果，进一步比较IDCM患者 不同心功能分级左右心室功能MRI参数。 结果 观察组患者HR、左室舒张末期容积 (LVEDV)、左室收缩末期容积(LVESV)、 左室舒张末期内径(LVEDD)、左室每搏 输出量(LVSV)、左室射血分数(LVEF)、 左室心肌质量(LVM)、左室高峰射血率 (PER)、左室高峰充盈率(PFR)、右室舒 张末期容积(RVEDV)、右室收缩末期容积 (RVESV)、右室每搏输出量(RVSV)、右室 射血分数(RVEF)及右室心肌质量(RVM)水 平与对照组存在显著差异(P＜0.05)；心 功能Ⅰ-Ⅱ级者LVEDV、LVESV、LVEDD、 LVSV、LVEF、PER、PFR、RVEDV、RVESV、 RVSV、RVEF与Ⅲ级和Ⅳ级者存在显著差异 (P＜0.05)；心功能Ⅲ级者LVSV、LVEF、 RVSV、RVEF与Ⅳ级者存在显著差异(P ＜0.05)。结论 MRI能够准确显示IDCM患 者左、右心室功能参数，为诊断和评估患 者心功能提供可靠依据。

Objective To explore the value of MRI in evaluating left and right ventricular function in patients with primary dilated cardiomyopathy. Methods A total of 80 cases of patients with IDCM were researched as the observation, 80 cases of healthy volunteer were as the control group, the blood pressure, HR and left and right ventricular function were tested, the results of MRI were compared. Results There were significant difference on the levels of HR, LVEDV, LVESV, LVEDD, LVSV, LVEF, LVM, PER, PFR, RVEDV, RVESV, RVSV, RVEF, RVM for the two groups(P＜0.05). There were significant difference on the levels of LVEDV, LVESV, LVEDD, LVSV, LVEF, PER, PFR, RVEDV, RVESV, RVSV, RVEF for the Ⅰ-Ⅱgrade. There had significant difference on the levels of LVSV, LVEF, RVSV, RVEF for the Ⅲ-Ⅳ grade(P＜0.05). Conclusion It can accurate display IDCM function parameters of left and right ventricle by MRI, it can provide reliable evidence for the patients with cardiac function.