Akagi T, Kato H, Kiyomatsu Y, Saiki K, Suzuki K, Eto T
Department of Pediatrics and Child Health, Kurume University School of Medicine, Japan.
Acta Paediatr Jpn. 1992 Jun;34(3):295-300. doi: 10.1111/j.1442-200x.1992.tb00962.x.
Cine magnetic resonance imaging (MRI) was performed on 20 patients (mean age: 5.3 +/- 4.4 years) with atrial, ventricular, or atrioventricular septal defects for evaluation of cardiac structure and blood flow. Prior to cine MRI, electrocardiographically gated MRI using multislice acquisition was performed on all patients to localize optimal slice location. Cine-MRI was obtained with a 30 degrees flip angle, 15 msec echo time, and 30 msec pulse repetition time, on a 256 x 256 or 128 x 128 acquisition matrix. Abnormalities of cardiac structure were well defined in all patients by gated cardiac imaging. In 18 of the 20 patients, cine-MRI was able to detect shunt flow, visualized as a low intensity signal in comparison with the surrounding blood flow. Cine-MRI can provide not only accurate anatomy of cardiac structures but functional assessment of the cardiac chamber, wall topology and flow relations. Cine-MRI will become an important noninvasive technique for assessment of anatomy and physiology in congenital heart disease.
对20例患有心房、心室或房室间隔缺损的患者（平均年龄：5.3±4.4岁）进行电影磁共振成像（MRI），以评估心脏结构和血流情况。在进行电影MRI之前，对所有患者进行了使用多层采集的心电图门控MRI，以确定最佳切片位置。电影MRI在256×256或128×128采集矩阵上，以30°翻转角、15毫秒回波时间和30毫秒脉冲重复时间获得。通过门控心脏成像，所有患者的心脏结构异常均得到清晰显示。在20例患者中的18例中，电影MRI能够检测到分流，与周围血流相比，分流表现为低强度信号。电影MRI不仅可以提供心脏结构的精确解剖，还能对心腔、壁拓扑结构和血流关系进行功能评估。电影MRI将成为评估先天性心脏病解剖学和生理学的一项重要无创技术。
