Procedure:
Both main renal arteries from origin to hilum and intrarenal branches, including interlobar arteries.
Both main renal veins.
Abdominal aorta proximal to the origins of the main renal arteries.
Peak systolic velocity of the aorta obtained proximal to the main renal arteries origins.
“Banana peel” view with both ostia of both main renal arteries, including velocity measurements
Peak systolic velocity of the suspected stenotic area with angle correction
Tardus Parvus waveforms in the intraparenchymal vessels
Main artery PSV > 200cm/sec
Increased renal/aortic PSV ratio (>3.5:1)
AI < 300 cm/sec2 (AI < 3 m/s)
AT > 70 msec
RI > 0.8.
(AT, AI and RI of the interlobar arteries in the upper pole, interpolar region, and lower pole.)
Reporting Template: Adequate visualization of the abdominal aorta: Yes/No
Adequate visualization of the renal artery origin: Yes/No
Peak systolic velocity of the aorta: cm/s
Peak systolic velocity of the right renal artery: cm/s
Peak systolic velocity of the left renal artery: cm/s
Waveforms of intraparenchymal vessels: Normal/Tardus Parvus (delete which is inappropriate)
Main renal artery PSV: cm/sec
Renal/aortic PSV ratio:
AI right : cm/sq.s
AT right: msec
RI right:
AI left: cm/sq.s
AT left: msec
RI left:
Conclusion:
Features are most likely to represent right/left/bilateral renal artery stenosis of more than 60%
Normal renal Doppler study
(Delete which is inappropriate)
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