Which vessel(s) may serve as collateral flow with inferior mesenteric artery occlusion?

Which method provides a definitive diagnosis of renal transplant rejection?

Which finding visualized at the arrow is commonly associated with Cirrhosis?

Which best describes the spectral Doppler waveform of SMA flow?

Post-injection, which PSV indicates normal arterial inflow adequate for an erection in the cavernosal artery?

Compared to traditional aortic surgical repair, stent graft placement usually requires a shorter hospital stay and is less stressful to the cardiopulmonary systems. What is the trade-off for these advantages?

Which vessel is difficult to visualize sonographically?

What is the diagnosis from this image of a transplanted kidney?  

During a post EVAR exam, a small endoleak from a tear in the graft is visualized. What type of endoleak is this?

All of the following could cause acute renal failure except: