MRI对先天性心脏病解剖及功能评价

目的　探讨MRI对先天性心脏病 (CHD)解剖及功能评价的临床应用价值。方法　对 1 5例经手术证实的CHD患者超声心动图 (ECG)与MRI诊断结果进行对比分析 ,研究 2种技术检测心脏解剖与功能的作用。结果　 1 5例患者 2 4个畸形中 ,MRI诊断正确 2 0个 (2 0 / 2 4 ) ,ECG诊断正确 2 1个 (2 1 / 2 4 )。MRI显示心外大血管病变较ECG有优势 ,而ECG显示心脏瓣膜病变较清晰 ;MRI和ECG在检测左心室舒张末期横径、容积 ,左心室收缩末期容积 ,左心室搏出量以及射血分数时 ,2种技术无显著性差异。结论　MRI可较准确地检测CHD的解剖和功能异常

The Study of Magnetic Resonance Imaging in the Evaluation of Cardiac Structures and Function in Congenital Heart Disease

Objective To investigate the clinical value of MRI in evaluating the cardiac structures and function of congenital heart diseases.Methods Fifteen cases with surgically proved different types of CHD were examined by the techniques of magnetic resonance imaging ( MRI) and echocardiography (ECG).The results were compared to determine their values in showing the abnormalities of cardiac structures and function.Results In 15 cases,20 malformations were diagnosed correctly by MRI within 24 abnormalities confirmed by operation(20/24),21 by ECG (21/24).MRI was better than ECG in displaying great vascular diseases, while ECG was better in valvular diseases.There was no significant difference between MRI and ECG in examining cardiac function.Conclusion MRI can clearly show the abnormalities of cardiac anatomy and function.