| 董兰强,朱勇.双层螺旋CT血管成像在肺动脉栓塞诊断中的应用研究[J].中国医学影像技术,2003,19(12):1618~1620 |
| 双层螺旋CT血管成像在肺动脉栓塞诊断中的应用研究 |
| Pulmonary Embolism by Dual-Slice Spiral CT Angiography |
| 投稿时间：2003-06-20 |
| DOI： |
| 中文关键词: 肺栓塞 体层摄影术,X线计算机 血管造影术 |
| 英文关键词:Pulmonary embolism Tomography, X-ray computed Angiography |
| 基金项目: |
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| 中文摘要: |
| 目的 研究双层螺旋CT肺动脉血管成像对肺动脉栓塞的诊断价值。方法 12例经双层螺旋CT肺动脉血管成像诊断的肺动脉栓塞,采用GE公司Hispeed NX/I 双螺旋CT,注射非离子型造影剂100ml,注射速度3~4ml/s,注射后15s开始扫描,将得到的数据传输到工作站(ADW 4.0)进行后处理。结果 12例病例,分析190支肺段以上肺动脉,共累及97支肺动脉(51%),其中40%的肺动脉主干和叶以上肺动脉受累,61%的叶肺动脉和段肺动脉受累。直接征象表现为肺动脉腔内充盈缺损; 间接征象包括所谓的"马赛克征"(肺窗观察),局部肺梗死,肺血减少和右心室扩大。结论 螺旋CT血管造影是一种无创检查肺动脉栓塞的可靠方法,在临床诊断肺动脉栓塞中可起到重要作用。 |
| 英文摘要: |
| Objective To study the value of dual-slice spiral CT angiography for pulmonary embolism(PE).Methods Twelve patients with PE were scanned by dual-slice spiral CT (GE Hispeed NX/I scanner). Scan started with a delay time of 15s after injection of 100ml of nonionic contrast medium by automatic injector with flow rate 3.0-4.0ml/s and 20s of total scanning time. Data was transferred to and performed post-process in a Sun workstation (ADW 4.0). Results 97 pulmonary arteries (51%) were involved including 40% pulmonary artery trunk, main pulmonary and 61% interlobular arteries and segment arteries. Direct sign of PE were intraluminal-filling defects including partial, mural, total filling defects and "railway-track sign". Indirect signs of PE were mosaic sign (lung window), focus of pulmonary infarction, decrease of pulmonary blood supply and enlargement of right ventricle. Conclusion Spiral CT angiography is a noninvasive and effective method for detecting PE. It can play a significant role in clinical diagnosis of PE. |
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