Characterization of venous thromboembolism by CT angiography / 中国组织工程研究

ABSTRACT

BACKGROUND:To introduce the scanning technique and imageologieal signs of multi-slice spiral CT angiography in the diagnosis of venous thromboembolism,and concomitantly evaluate its apphcadon value and advantage in the early diagnosis of venous thromboembolism.METHODS:Using the terms"venous thromboembolism,pulmonary thromboembolism,CT angiography",the authors computer-retrieved Medline to identify studies published between January 1998 and October 2007 in the English language.At the same time,we searched the Wanfang database with the same terms in the Chinese language by hand and computer forstudies between January 2000 and October 2007.A total of 228 manuscripts Were obtained,and 24 of them corresponded to the inclusive criteria.RESULTS:Using collection technique and in conjunction with high-quality three-dimensional reconstructed images,multi-slice spiral CT can clearly reveal the distal branches of pulmonary artery,achieving subsegmental-level diagnosis of Duhnonary thromboembolism.There was no remarkable difference in the sensitivity for diagnosing pulmonary thromboembolism between thin-slice spiral CT and pulmonary artery angiography.The sensitivity and specificity of thin-slice spiral CT is higher compared to pulmonary ventilation-perfusion radioisotope scanning.When eliminating acute pulmonary thromboembolism,spiral CT is a promising first-ehoicemethod.CONCLUSION:Spiral CT is characterized by rapid scanning,clear image,and without omission of small foci.Spiral CT angiography is a safe,rapid,non-invasive,and effective method for the diagnosis of venous thromboembolism.