屏气Cine-MRI对冠心病病人左心室功能的评价作用

Evaluation Effects of Breath-Hold Cine-MRI on Left Ventricular Function of Patients with Coronary Heart Disease

目的探究屏气磁共振电影成像法(Cine-MRI)在冠心病患者左室功能评价中的应用价值。方法选择2016年9月至2018年10月于我院确诊的98例冠心病患者及同期查体的50例健康成年志愿者作为研究对象,所有受试者均进行屏气Cine-MRI及常规非屏气MRI检查,在48h内进行心脏超声心动图检查。比较三种方法所测舒张末期容量(EDV)、收缩末期容量(ESV)、每搏排出量(SV)、射血分数(EF)、舒张末期心肌质量(EDM)、收缩末期心肌质量(ESM),并分析相关性。结果三种方法测定健康受试者EDV、ESV、SV、LVEF、EDM、ESM等指标比较差异均无统计学意义(P>0.05);三种方法测定冠心病患者EDV、ESV、SV、LVEF、EDM等指标比较无显著差异(P>0.05),超声心动图测定ESM明显高于屏气Cine-MRI与非屏气MRI(P<0.05);屏气Cine-MRI测定心功能参数与超声心动图、非屏气MRI方法测定参数均存在较高程度的正相关(P<0.05)。结论屏气Cine-MRI技术在评价左室功能方面具有较高的价值,可客观反映左室结构及功能变化,可为冠心病患者心室功能评价提供参考。

Objective To explore the application value of breath-hold cine-magnetic resonance imaging(Cine-MRI)in evaluating the left ventricular function of patients with coronary heart disease(CHD).Methods A total of 98 CHD patients were confirmed in the hospital from September 2016 to October 2018,and 50 healthy adult volunteers examined in the same period were enrolled as study subjects.All subjects underwent breath-hold Cine-MRI and routine non-breath-hold MRI examinations.Cardiac echocardiography was performed within 48 h.The end-diastolic volume(EDV),end-systolic volume(ESV),stroke volume(SV),ejection fraction(EF),end-diastolic mass(EDM),and end-systolic mass(ESM)measured by the three methods were compared.The correlation was analyzed.Results There were no significant differences in EDV,ESV,SV,LVEF,EDM,or ESM of healthy subjects measured by the three methods(P>0.05).There were no significant differences in EDV,ESV,SV,LVEF,or EDM of CHD patients measured by the three methods(P>0.05).ESM measured by echocardiography was significantly higher than that by breath-hold Cine-MRI and non-breath-hold MRI(P<0.05).There was a high positive correlation of cardiac function parameters measured by breath-hold Cine-MRI with parameters measured by echocardiography and non-breath-hold MRI(P<0.05).Conclusion The value of the breath-hold Cine-MRI technique is relatively higher in evaluating the left ventricular function.This can objectively reflect the left ventricular structure and function changes,and provide references for evaluating the ventricular function in CHD patients.