CAMRT Radiography Practice Exam

True or False, Retrograde urography differs from excretory (normal flow) in that the contrast medium is injected directly into the kidney?

1. True

2. False

3. It depends on the procedure

4. Only in emergency situations

The correct answer is: False

In retrograde urography, the contrast medium is indeed introduced directly into the renal pelvis via catheters placed in the ureters, which allows for visualization of the urinary tract in a way that differs from standard excretory urography. Excretory urography, on the other hand, involves the intravenous injection of contrast that is filtered by the kidneys and excreted into the urine, allowing the clinician to see the functioning of the kidneys in real time as the contrast passes through the urinary system. Therefore, the statement that retrograde urography differs from excretory urography because the contrast medium is injected directly into the kidney is true. This direct administration allows for a better assessment of specific abnormalities in the urinary system and is particularly useful in cases where there are obstructions or vulnerabilities in the urinary tract that require targeted imaging.