Renal duplex sonography: Main renal artery versus hilar analysis

Abstract

Main renal artery interrogation is an accurate screening test to detect significant stenosis or occlusion of the main renal artery. Hilar analysis alone does not provide sufficient sensitivity to be used as a sole screening study. Neither method detects the presence of renovascular disease associated with polar vessels.

Parâmetros diretos do duplex scan no diagnóstico da estenose da artéria renal: estudo de validação e otimização dos pontos de corte

“…The mean values ± SD of renal artery PSV presented a significant statistical difference (p < 0.005) between the groups with RAS 0-59% and RAS 60-99% (see table 3) in agreement with the results obtained in various publications 22,23,24 .…”

“…In contrast to these findings, Motew and associates obtained better results with a cut-off point of 180cm/sec than with the value of 200 cm/sec 23 and Napoli and associates preferred the cut-off point of 159 cm/sec rather than 180 cm/sec 24 , due to the higher sensitivity rates obtained with these limits.…”

Role of color-Doppler sonography in the follow-up of renal artery stenting

“…Attualmente l'ECD delle arterie renali risulta la principale metodica di screening nella diagnosi di stenosi della arteria renale con numerosi studi in ambito internazionale che attribuiscono a tale metodica valori di sensibilità pari all'83%-96% e di specificità del 76%-98% [5][6][7][8][9][10][11][12][13]. I vantaggi della metodica sono rappresentati dalla non invasività, ripetibilità, basso costo e buon valore predittivo negativo se eseguito in popolazione selezionata, mentre i limiti riconosciuti sono l'operatore-dipendenza, l'obesità, il meteorismo e le anomalie vascolari, con particolare riguardo alla presenza di varianti anatomiche dell'arteria renale [6,[13][14][15][16][17].…”

“…Color-Doppler ultrasonography (CDUS) of the renal arteries is the principal screening tool used to detect RAS, with many international studies reporting sensitivity and specificity values of 83%-96% and 76%-98%, respectively [5][6][7][8][9][10][11][12][13]. The advantages of the technique are its noninvasiveness, repeatability, low cost and good negative predictive value when used in selected populations, whereas its known limitations are operator dependence, obesity, bowel gas and vascular abnormalities, especially anatomical variants of the renal artery [6,[13][14][15][16][17].…”

AIUM Practice Guideline for the Performance of Native Renal Artery Duplex Sonography

“…[3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] A peak systolic velocity should also be recorded at any site of color aliasing or suspected stenosis. If there is significant stenosis, a Doppler waveform should be recorded within the stenosis and distal to the stenosis.…”