Imaging GI tract

Question 1

IV contrast CT - when to scan

Answer 1

Hypovascular tumor (most metastatic adenocarcinomas): @60 sec - for maximal difference b/t tumor and normal liver tissue

Question 2

how to tell if pancreas is necrotic?

Answer 2

Contrast enhanced CT - see which part doesn’t light up

Question 3

difference b/t ileus and small bowel obstruction on xray

Answer 3

SBO has normal or decompressed large bowel, ileus has dilated large bowel