摘要
Objective To evaluate the feasibility of contrast enhanced three-dimensional(3D)magnetic resonance angiography(MRA)in identifying the systemic blood supply in pulmonary sequestration.Methods Three patients who were suspected of pulmonary sequestration were examined by contrast enhanced 3D MRA.MR images were compared with surgical findings.Results Contrast enhanced 3D MRA clearly demonstrated systemic arteries from the descending thoracic aorta supplying the basilar segments of the lower lobe in each case.Pulmonary veins from these segments,which drained into the left atrium in two cases,were also detected.MRA images were consistent with those observed in surgery.Conclusion Contrast enhanced 3D MRA allows accurate diagnosis of pulmonary sequestration and may obviate the need for more invasive investigations.
目的 评价对比剂动态增强三维 (3D)磁共振血管成像 (MRA)技术识别异常体循环动脉 ,诊断肺隔离症的方法与价值。方法 三位经胸部X线平片和CT检查怀疑患有肺隔离症的患者 ,接受了对比剂动态增强 3DMRA检查。我们描述了MRA影像显示并与手术所见作了对比。结果 对比剂动态增强 3DMRA清楚地显示了发自于降主动脉的异常血管 ,供应下肺叶基底段的病灶部位。其中两例于静脉相还显示了病灶的引流肺静脉 ,并见其汇入左心房。MRA影像显示与外科手术所见相符。结论 对比剂动态增强 3DMRA可以正确诊断肺隔离症 ,并可替代传统的创伤性的血管造影检查。
