"normal renal arterial resistive index (RI) is ≈ 0.60"
"The right renal artery courses inferior and obliquely, passing posterior to the IVC and the right renal vein to reach the renal hilum. The left renal artery is much shorter and arises slightly more superior to the right main renal artery. The left renal artery courses more horizontally, posterior to the left renal vein to enter the renal hilum. Renal arteries are between 4-6 cm in length and usually 5-6 mm in diameter."
Expected headings
"Doppler ultrasound"
"multiple/additional/accessory renal arteries: common; occur in ~25% of the population"