回顾性研究间接 CT 静脉造影的价值：英国视角。
A retrospective study of the value of indirect CT venography: a British perspective.
机构信息
Department of Radiology, Leeds Teaching Hospital NHS Trust, Leeds, UK.
出版信息
Br J Radiol. 2012 Jul;85(1015):917-20. doi: 10.1259/bjr/28355108. Epub 2011 Sep 6.
OBJECTIVE
The aim of this study was to establish the value of indirect CT venography (CTV) in clinical practice within the UK.
METHODS
804 combined CT pulmonary angiogram and CTV studies were retrospectively reviewed. CTV was performed 180 s after the injection of contrast using an incremental technique with a 5-mm collimation and a 5-cm interspace between images extending from the iliac crests to the tibial plateaus.
RESULTS
12.9% of studies had isolated pulmonary emboli (PE), 3.0% had both a PE and deep vein thrombosis (DVT) and 1.1% had an isolated DVT. The proportion of positive cases diagnosed by CTV alone was 6.6%.
CONCLUSION
In a UK-based practice, the incidence and the proportion of isolated DVT diagnosed by CTV are lower than expected from published data. An analysis of possible causes for this is made within the paper.
目的
本研究旨在确定间接 CT 静脉造影（CTV）在英国临床实践中的价值。
方法
回顾性分析了 804 例联合 CT 肺动脉造影和 CTV 研究。CTV 采用递增技术进行，在注射造影剂后 180 秒进行，准直为 5mm，图像间隔为 5cm，从髂嵴延伸至胫骨平台。
结果
12.9%的研究有孤立性肺栓塞（PE），3.0%有 PE 和深静脉血栓形成（DVT），1.1%有孤立性 DVT。CTV 单独诊断阳性病例的比例为 6.6%。
结论
在英国的临床实践中，CTV 诊断孤立性 DVT 的发生率和比例低于已发表数据的预期。本文对可能的原因进行了分析。
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