摘要
目的探讨16层螺旋CT血管成像对下肢动脉闭塞性疾病的诊断价值。方法对38例疑为下肢动脉病变的患者进行了16层螺旋CT血管成像,扫描范围为腹主动脉肾动脉开口水平至踝关节水平,层厚2.5mm,螺距1.375∶1,重建层厚1.25mm。对比剂剂量100ml～130ml,注射速率3.0ml/s～3.5ml/s。扫描后在Workstation4.2工作站上对全部原始图像进行后处理重建,进行下肢动脉成像,重建方式采用最大密度投影及容积再现。结果所有病例动脉血管重建像均显示良好,MSCTA发现37例患者共114个动脉节段存在不同程度的狭窄或闭塞,1例下肢动脉未见明显异常。结论16层螺旋CT血管成像可以真实再现下肢动脉的解剖与形态,对临床评估下肢动脉狭窄与闭塞的范围与程度具有重要价值。
objective To evaluate the diagnostic value of 16-slice spiral CT angiography（CTA） in arteriosclerotic occlusive disease of lower extremities. Methods 38 cases clinically suspected of arteriosclerotic occlusive disease of lower extremities underwent CT angiography using a 16-slice scanner with range from abdominal aortic -renal arterial level to ankle joint, slice increment 2.5mm, pitch 1.375：1, reconstruction increment 1.25mm. The volume of contrast agent was 100-130ml, flow rate 3.0-3.5ml/s. AII raw data were reconstructed on Workstation4.2 after scanning, including MIP and VR. Results 38 cases doubtfully with arteriosclerotic occlusive disease of lower extremities were demonstrated successfully with CTA.114 arterial occlusive lesions of 37 patients were detected by MSCTA, only one patient were normal. Conclusions 16-slice spiral CT angiography was valuable to demonstrate and diagnose clinically arteriosclerotic occlusive lesion of lower extremities.
出处
《海南医学》
CAS
2007年第6期20-22,共3页
Hainan Medical Journal
关键词
CT血管成像
动脉闭塞症
下肢
CT angiography
arteriosclerotic occlusive disease
lower extremity
