Contrast Phases

Question 1

Early arterial phase

Answer 1

20-30sec- for arterial mapping, hyper vascular neuroendocrine tumor of pancreas

Not to be done in HCC as miss out lesions

Question 2

Late arterial phase

Answer 2

30-40s– for hep a and branches and starting of portal v enhancement

HCC and hypervascular mets

Question 3

Portal venous

Answer 3

65 -75 se
Hypovascular mets

Lesions to be measured in portal venous

Question 4

Delayed or equilibrium in CT
Or transitional in MRI

Answer 4

2-5 min

Washout in HCC/adrenal

Question 5

Pancreatic

Answer 5

40-50sec
Hypo in pan ca

Question 6

Hepatobiliary

Answer 6

20 min for gadoxetate
1-3 hurs after gadobenate