16层螺旋CT血管造影在肺动脉栓塞中的应用价值

目的探讨16层螺旋CT血管造影(MSCTA)对肺动脉栓塞的诊断价值。方法33例患者行16层螺旋CT血管造影检查、薄层扫描及三维重建,三维重建方法包括容积再现(VR)、多平面投影(MPR)、最大密度投影(MIP)。结果33例均能显示肺栓塞的部位、范围、局部管腔狭窄程度,25例急性肺栓塞的直接征象为"截断征","双轨征";8例慢性肺动脉栓塞主要表现为肺动脉管腔内偏心性的和附壁性的充盈缺损。结论16层螺旋CT血管造影是诊断肺动脉栓塞及其溶栓疗效评价和随访最有效的无创性方法之一。

The clinical applications of 16-slice Spiral CT in pulmonary embolism

Objective To evaluate the clinical applications of 16-slice spiral CT pulmonary angiography in the diagnosis of pulmonary embolism. Methods 33 patients with pulmonary embolism were examined by 16-slice spiral CT pulmonary angiography. The post-processing methods included VR,MPR and MIP. Results All the 33 cases could better show the position and extent of pulmonary embolism,as well as narrowing of pulmonary arteries. The direct presence of 25 cases acute pulmonary embolism was visualized as a"total occlusion" or "double canal" signs. However,8 cases of chronic pulmonary embolism demonstrated partial or mural filling defect. Conclusion 16-slice spiral CT pulmonary angiography can be used as a noninvasive and effective method in diagnosing pulmonary embolism,evaluating effect of thrombolysis and flowing-up as well.