Doppler sonography in renal artery stenosis. An evaluation of intrarenal and extrarenal imaging parameters.
A prospective comparison of different direct and indirect Doppler parameters with angiography was performed to determine the most useful Doppler parameters and threshold values for the detection of significant (> or =60%) renal artery stenosis (RAS). The best combination of parameters was found to be the use of direct parameters of peak systolic velocity (PSV) greater than 180 or 200 cm/s and renal aortic ratio (RAR) greater than 3.0 with a sensitivity and specificity at 92% and 88%, respectively.
Conkbayir
Işik
I
SSK Ankara Eğitim Hastanesi (Social Security Ankara Hospital), Department of Radiology, TR-06110, Dişkapi, Ankara, Turkey. iconbayir@yahoo.com
Yücesoy
Cüneyt
C
Edgüer
TahsIn
T
Yanik
Bahar
B
Yaşar Ayaz
UmIt
U
Hekimoğlu
Baki
B
D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011859:Radiography; D012078:Renal Artery Obstruction / Q000000981:diagnostic imaging*; D012680:Sensitivity and Specificity; D018608:Ultrasonography, Doppler / Q000379:methods*