Both are used to check for leaks or vessel ruptures in the urinary tract, although one is obviously going to spot defects further up the system than the other. It was a little strange to see a thirty year veteran of emergency medicine putting so much effort into changing something that we realistically can't. In fairness, however, there are some issues that are hot buttons for some people. I know people like that, and they're absolutely horrible to work with. I don't trust them, I don't want to be around them, and most of the time, I just want to kick their asses.
Hope springs eternal.
Told ya that reporter was going to come back and bite 'em.