儿童先天性心脏病磁共振成像

先天性心脏病(先心病)相当常见,在每1000个新生儿中就有7人左右.儿童先心病通常首选超声心动图枪查,如明确诊断,即行治疗,如不能明确诊断,则做心脏磁共振或多层螺旋CT.CT的主要问题是有大量射线.磁共振对手术前后的儿童先心病人可成为解剖和功能的一站式检查手段.本文介绍磁共振对儿童先心病人的扫描技术和临床应用.自旋同波...

Magnetic resonance imaging of congenital heart disease in children

Congenital heart disease（CHD） is a relatively common problem with an incidence of approximately seven per 1,000 live births.Children with CHD usually undergo an echocardiogram（ECHO）,and,if diagnostic,the appropriate management pathway would be followed.However,if ECHO cannot resolve the diagnostic problem,patients will now be referred for cardiovascular magnetic resonance（MR） or multislice CT.The major limitation of CT is the use of ionizing radiation and MR may well become a one-stop shop for morphological or functional evaluation of congenital heart disease in the preoperative and postoperative period.The purpose of this paper was to evaluate the scanning technique and the clinical application of magnetic resonance examination in children with CHD.T1-weighted spin-echo sequence,gradient-echo cine sequence and contrast enhancement magnetic resonance angiography（CE-MRA） should be performed in every case.CHD can be diagnosed by magnetic resonance imaging safely and reliably.CE-MRA is the most reliable noninvasive imaging diagnostic modality for congenital obstructive aortic arch anomalies and congenital obstructive total anomalous pulmonary venous return.