64层螺旋CTPA对肺动脉栓塞的诊断价值(附25例分析)

目的评价64层螺旋CTPA及三维成像技术对肺动脉栓塞的诊断价值。方法收集25例经64层SCTPA检查确诊的肺动脉栓塞;回顾性分析其成像条件及薄层容积图像,MPR、MIP、SSD、VR等后处理方法对肺动脉及其栓子的显示情况,并观察肺动脉栓塞征象。结果25例SCTPA图像质量均满足诊断需要;薄层容积图像可清晰显示肺动脉及其各级分支,显示率为100%;MPR、MIP、SSD、CR等后处理法有助于多角度、多方位显示栓子。PE主要累及左右肺动脉等大分支,占90%,其中中央型栓塞18,周围型栓塞7例。栓塞直接征象为栓子形成充盈缺损;间接征象包括肺梗死、胸腔积液、心包积液、膈肌抬高和右心增大等。结论64层螺旋CT极大提高了SCTPA这一技术的临床应用价值,是目前诊断肺动脉栓塞最为快捷、安全、可靠的影像方法。

Diagnostic value of 64-slice spiral CT pulmonary angiographyin pulmonary embolism: analysis of 25 cases

Objective To investigate the diagnostic value of 64-slice spiral CT scanner in pulmonary embolism (PE). Methods Twenty-five patients with PE defined by 64 slice spiral CTPA were enrolled in this study. Retrospectively analyzing the scanning plans of 64 slice spiral CTPA, and the displaying of the pulmonary artery and the embolism and thinner slice volume imaging, the application of some restructures methods such as MPR,MIP,SSD,VR and so on, then observing the main signs of pulmonary embolism. Results The quality of all SCTPA imaging were accordance with the diagnosis. The view of the main pulmonary artery and its branches were showing clearly by these methods mentioned above, the showing ratio was 100%. In all patients, PE mainly involved the large branch of pulmonary, such as the right and left pulmonary artery. centeral pulmonary embolism was 18 cases and peripheral pulmonary embolism was 7 cases. The directive signs of pulmonary embolism is different degree filling defect, and nondirective signs including lung infarction, pleural effusion, pericardia effusion, and enlarging of right heart and so on.Conclusion 64-slice spiral CTPA can be practically used in the diagnosis of pulmonary artery embolism. It is a the optimal modality for detecting PE in current,and it is fast, effective, reliable and non-invasive methods.