TY - JOUR
T1 - Spiral CT of renal artery stenosis
T2 - Comparison of three-dimensional rendering techniques
AU - Rubin, Geoffrey D.
AU - Dake, Michael D.
AU - Napel, Sandy
AU - Jeffrey, R. Brooke
AU - McDonnell, Charles H.
AU - Sommer, F. Graham
AU - Wexler, Lewis
AU - Williams, David M.
PY - 1994/1
Y1 - 1994/1
N2 - 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.
AB - 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.
KW - Angiography, technology
KW - Arteries, CT, 961.12916
KW - Computed tomography (CT), helical technology
KW - Computed tomography (CT), three-dimensional
KW - Renal angiography, 961.12916
KW - Renal arteries, stenosis or obstruction, 961.721
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U2 - https://doi.org/10.1148/radiology.190.1.8259402
DO - https://doi.org/10.1148/radiology.190.1.8259402
M3 - Review article
C2 - 8259402
SN - 0033-8419
VL - 190
SP - 181
EP - 189
JO - Radiology
JF - Radiology
IS - 1
ER -