Multislice CT Angiography in Renal Artery Stent Evaluation: Prospective Comparison with Intra-Arterial Digital Subtraction Angiography

Journal Article · Thu Jan 15 04:00:00 EST 2004 · Cardiovascular and Interventional Radiology

DOI:https://doi.org/10.1007/S00270-003-2685-Y· OSTI ID:21088316

Raza, Syed A; Chughtai, Aamer R ^[1]; Wahba, Mona ^[2]; Cowling, Mark G ^[1]; Taube, David ^[2]

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1. St. Mary's Hospital, Praed Street, London W2 1NY, Department of Radiology (United Kingdom)
2. St. Mary's Hospital, Praed Street, London W21NY, Department ofNephrology (United Kingdom)

Purpose: To assess the role of multislice computed tomography angiography (MCTA) in the evaluation of renal artery stents, using intra-arterial digital subtraction angiography (DSA) as the gold standard. Methods: Twenty consecutive patients (15 men, 5 women) with 23 renal artery stents prospectively underwent both MCTA and DSA. Axial images, multiplanar reconstructions and maximum intensity projection images were used for diagnosis. The MCTA and DSA images were each interpreted without reference to the result of the other investigation. Results:The three cases of restenosis on DSA were detected correctly by MCTA; in 19 cases where MCTA showed a fully patent stent, the DSA was also negative. Sensitivity and negative predictive value (NPV) of MCTA were therefore 100%. In four cases, MCTA showed apparently minimal disease which was not shown on DSA. These cases are taken as false positive giving a specificity of 80% and a positive predictive value of 43%. Conclusion: The high sensitivity and NPV suggest MCTA may be useful as a noninvasive screen for renal artery stentrestenosis. MCTA detected mild disease in a few patients which was not confirmed on angiography.

• OSTI ID: 21088316
• Journal Information: Cardiovascular and Interventional Radiology, Journal Name: Cardiovascular and Interventional Radiology Journal Issue: 1 Vol. 27; ISSN 0174-1551; ISSN CAIRDG
• Country of Publication: United States
• Language: English

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