Question

The hepatic arterial phase occurs about _______seconds after the start of the IV contrast injection?

1) 0-20 sec
2) 20-40 sec
3) 40-60 sec
4) 60-80 sec

Answer 1

The hepatic arterial phase occurs around 20-40 seconds after the start of the IV contrast injection.

Step-by-step explanation:

The hepatic arterial phase occurs about 20-40 seconds after the start of the IV contrast injection. This phase of imaging is crucial for detecting hypervascular lesions in the liver, such as hepatocellular carcinoma. The timing is important because it corresponds to when the contrast medium is predominantly present in the hepatic arteries, before it has fully perfused through the rest of the hepatic parenchyma.