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目的:回顾性分析肺动脉闭锁伴室间隔缺损(PAVSD)的多层螺旋CT(MSCT)表现。方法:分析5例肺动脉闭锁伴室间隔缺损患者的MSCT图像。4例行平扫及双期扫描,另1例行单期扫描。结合薄层图像、多平面重组、薄层最大密度投影以及容积再现法进行观察。结果:MSCT显示肺动脉瓣闭锁2例,肺动脉干中断、无中央共汇者3例。5例均见室间隔缺损。2例见明显的支气管动脉扩张;2例见直接主动脉肺动脉侧支;2例见间接主动脉肺动脉侧支。1例合并右心室发育不良及三尖瓣狭窄,1例合并房间隔缺损;3例合并右位主动脉弓,2例合并主动脉后左无名静脉。1例有手术史者可见上腔静脉与右肺动脉吻合,与右心房无交通。结论:MSCT可清楚地显示PAVSD的主要表现。
Objective: To retrospectively analyze the multi-slice spiral CT (MSCT) manifestations of pulmonary atresia with ventricular septal defect (PAVSD). Methods: MSCT images of 5 patients with pulmonary atresia and ventricular septal defect were analyzed. 4 routine plain scan and double-phase scan, the other one case of single-phase scan. Combined with thin-layer image, multi-plane reconstruction, maximum density projection of thin layer and volumetric reproduction method. Results: MSCT showed pulmonary valve atresia in 2 cases, pulmonary artery occlusion, without central cross-sink in 3 cases. 5 cases were seen ventricular septal defect. 2 cases of obvious bronchiectasis; 2 cases of direct aortic pulmonary artery collateral; 2 cases of indirect collateral pulmonary artery collateral. One patient had right ventricular dysplasia and tricuspid stenosis, one patient with atrial septal defect, three patients with right aortic arch and two patients with left aortic vein. One case history of surgery shows that the superior vena cava and right pulmonary artery anastomosis, no traffic with the right atrium. Conclusion: MSCT clearly shows the main manifestation of PAVSD.