先天性主动脉缩窄MRI诊断

目的 探讨先天性主动脉缩窄磁共振表现及临床价值.方法 先天性主动脉缩窄患者25例:单纯型11例、复杂型14例;其中合并动脉导管未闭8例、合并室间隔缺损4例、房间隔缺损2例.全部病例MRI检查包括SE序列、Cine MRA及对比增强MRA,所有患者均做心脏超声检查.结果 25例患者磁共振均可轻清晰显示病变范围、程度、类型,明显优于心脏超声诊断,与手术所见一致.磁共振诊断主动脉缩窄的准确率为100%,诊断主动脉并发畸形的准确率为78%.结论 磁共振可清晰显示主动脉缩窄的类型、范围、程度及伴随畸形,基本可代替心血管造影,对临床治疗及术后随访均有很大帮助.

Diagnosis of congenital coarctation of aorta using MRI

Objective To investigate manifestations of congenital coarctation of aorta on MRI images. Methods 25 patients with coarctation of aorta were studied, including 11 cases of simple type and 14 cases of complex type. 8 cases were complicated with patent arterial duct, and 4 with ventricular septal defect, and 2 with atrial septal defect. All of the patients underwent MRI examinations including SE sequence, Cine MRA, contrast-enhanced MRA and cardiac ultrasound. Results For all 25 patients the MRI imaging clearly displayed scope, extent, type of the lesions superior to that found by cardiac ultrasound and consistent with findings during operation. Correctness rate for diagnosis of coarctation of aorta using MRI is 100 per cent and for complicated malfor- mations is 78 per cent. Conclusion MRI examination is able to clearly display type, scope, extent and complicated malformations, being potential to replace angiography, and contributing to planning treatment and follow up.