The arcuate arteries are small blood vessels in the kidney that course along the boundary between the renal cortex and the renal medulla, forming arch-like patterns. On Doppler ultrasound of the kidney, the arcuate arteries can be seen as small vessels with characteristic flow patterns, and they serve as an important landmark for assessing renal blood flow. Changes in arcuate artery Doppler waveforms can indicate renal vascular disease, rejection in a transplanted kidney, or other conditions affecting kidney perfusion. Evaluating blood flow at the arcuate artery level gives sonographers information about the health of the smaller vessels deep within the kidney tissue.
Sonography Term