Time of flight renal MR angiography: utility in patients with renal insufficiency.
We studied the renal arteries prospectively in 16 patients with renal insufficiency using a combination of two-dimensional and three-dimensional time of flight magnetic resonance angiography (MRA). Results were compared with conventional angiography. All renal arteries were identified by MRA. Accuracy for classifying renal arteries into patent, moderately (30-70%) stenotic, severely (> 70%) stenotic, or occluded was 91%. With regard to the presence or absence of severe occlusive disease (> 70% stenosis or occlusion) the sensitivity was 100%, with a specificity of 93%.
Yucel
E K
EK
Department of Radiology, Massachusetts General Hospital, Boston 02115.
Kaufman
J A
JA
Prince
M
M
Bazari
H
H
Fang
L S
LS
Waltman
A C
AC
D000368:Aged; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D011446:Prospective Studies; D011859:Radiography; D012077:Renal Artery / Q000000981:diagnostic imaging / Q000473:pathology*; D012078:Renal Artery Obstruction / Q000150:complications / Q000175:diagnosis / Q000000981:diagnostic imaging; D051437:Renal Insufficiency / Q000209:etiology*