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

Geoffrey D. Rubin, Michael D. Dake, Sandy Napel, R. Brooke Jeffrey, Charles H. McDonnell, F. Graham Sommer, Lewis Wexler, David M. Williams

Research output: Contribution to journalReview articlepeer-review

303 Scopus citations

Abstract

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 (≥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.

Original languageEnglish (US)
Pages (from-to)181-189
Number of pages9
JournalRadiology
Volume190
Issue number1
DOIs
StatePublished - Jan 1994
Externally publishedYes

Keywords

  • Angiography, technology
  • Arteries, CT, 961.12916
  • Computed tomography (CT), helical technology
  • Computed tomography (CT), three-dimensional
  • Renal angiography, 961.12916
  • Renal arteries, stenosis or obstruction, 961.721

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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