A nephrogram taken during an IVU demonstrates that the renal parenchyma is poorly visualized but the calyces are contrast enhanced.What is the most likely reason for this radiographic outcome?

Question

Quizplus · Accepted Answer

A nephrogram taken during an IVU demonstrates the contrast-enhanced calyces, which indicates that the contrast has reached the kidneys. However, the poorly visualized renal parenchyma suggests that the contrast has not had enough time to be filtered into the kidneys and into the renal tubules. This is most likely due to the exposure not being taken soon enough following the injection.

A Nephrogram Taken During an IVU Demonstrates That the Renal