Spiral CT of renal artery stenosis: comparison of three-dimensional rendering techniques.


Journal Article

PURPOSE: To evaluate the accuracy of computed tomographic (CT) angiography in the detection of renal artery stenosis (RAS). MATERIALS AND METHODS: CT angiography was performed in 31 patients undergoing conventional renal arteriography. CT angiographic data were reconstructed with shaded surface display (SSD) and maximum-intensity projection (MIP). Stenosis was graded with a four-point scale (grades 0-3). The presence of mural calcification, poststenotic dilatation, and nephrographic abnormalities was also noted. RESULTS: CT angiography depicted all main (n = 62) and accessory (n = 11) renal arteries that were seen at conventional arteriography. MIP CT angiography was 92% sensitive and 83% specific for the detection of grade 2-3 stenoses (> or = 70% stenosis). SSD CT angiography was 59% sensitive and 82% specific for the detection of grade 2-3 stenoses. The accuracy of stenosis grading was 80% with MIP and 55% with SSD CT angiography. Poststenotic dilatation and the presence of an abnormal nephrogram were 85% and 98% specific, respectively. CONCLUSION: CT angiography shows promise in the diagnosis of RAS. The accuracy of CT angiography varies with the three-dimensional rendering technique employed.

Full Text

Duke Authors

Cited Authors

  • Rubin, GD; Dake, MD; Napel, S; Jeffrey, RB; McDonnell, CH; Sommer, FG; Wexler, L; Williams, DM

Published Date

  • January 1, 1994

Published In

Volume / Issue

  • 190 / 1

Start / End Page

  • 181 - 189

PubMed ID

  • 8259402

Pubmed Central ID

  • 8259402

International Standard Serial Number (ISSN)

  • 0033-8419

Digital Object Identifier (DOI)

  • 10.1148/radiology.190.1.8259402


  • eng

Conference Location

  • United States