亚秒级螺旋CT在肺动脉栓塞检查中的成像方法

Methods and Technique of Subsecond Spiral CT Scan in Detect Acute Pulmonary Embolism

目的研究亚秒级螺旋CT对诊断急性肺动脉栓塞成像方法、技巧.方法对20例临床上疑肺动脉栓塞的病例先行常规平扫,后经肘静脉注入对比剂,运用螺旋CT快速薄层扫描,并通过工作站三维重建技术对肺动脉主干及分支进行CTPA成像,研究肺动脉成像的最佳参数及操作技术,探索该成像技术在肺动脉栓塞疾病检查中的诊断价值。结果20例患者检出7例肺动脉栓塞病人,栓塞表现肺动脉主干或分支腔内充盈缺损。结论亚秒级螺旋CT肺动脉造影技术(CTPA)是急性肺动脉栓塞新的无创性检查方法,在成像技术完全可行,且安全、迅速、有效、无创.

Objective To investigate the imaging methods and technique for subsecond spiral CT to detect acute pulmonary embolism（PE）. Methods 20 patients with clinically suspected PE were enrolled in this study . After the thorax plain CT scan and intravenous administration of contrast, each paltient underwent high- speed,thin- layer spiral CT scan for CT pulmonary angiograpny （CTPA） . We also performed multiplanar reconstruction and 3 - dimension rendition to provide ＂lifelike＂ view of the main pulmonary artery and its branches. We pick out the suitable parameter and optimize the scan process , also evaluate the value of CTPA for detecting PE. Results 7 patients with PE were revealed , the presence of PE was seen as idling defect in. Conclusions CTPA is a new modality for detecting PE, and it is noninvasive, practical and effective.