先天性主动脉缩窄并缩窄后动脉导管未闭的MRI诊断(附9例分析)

目的 :探讨磁共振成像 (MRI)对诊断先天性主动脉缩窄并缩窄后动脉导管未闭的价值。方法 :对 9例经临床诊断—先天性主动脉缩窄并缩窄后动脉导管未闭的患者进行MRI检查 ,采用自旋回波T1加权像 ,以显示缩窄部位与动脉导管的关系。结果 :MRI不仅能显示主动脉缩窄的解剖结构 ,还可予以分型并观察相邻结构特点。MRI斜矢状位扫描显示动脉导管上缘向降主动脉腔内突出的嵴。结论 :先天性主动脉缩窄在MR影像上可以分为三型 ,对嵴型的诊断应予以重视。

MRI in diagnosis of congenital coarctation of the aorta and patent ductus arteriosus behind the coarctation

Objective:To investigate the value of MRI in diagnosis of congenital coarctation of the aorta (COAR) and patent ductus arteriosus (PDA) behind the coarctation.Method:In 9 Patients diagnosed as COAR and PDA clinically, We examined the patient with MR image using Spin Echo T1 weighted imagings in order to understand the correlations between coarctation and ductus arteriosus.Result:In all MR images, not only the characteristics of anatomical structure of COAR can be observed ,but also the type of the abnormals can be divided.Co segital view of MRI showed the crista projecting from the upper ridge of the ductus arteriosus to the cavity of the descendent aorta.Conclusion:Congenital COAR may be divided into 3 types on MRI, and the diagnosis of crista type may be important.