GI Imaging

Question 1

CT vs MRI

Answer 1

CT - radiation, fast, good for solid organs,

MRI - no radiation, no fast, good for lesions, best tissue resolution

Question 2

best modality for diagnosing problems of the bile and pancreatic ducts

Answer 2

ERCP

Question 3

best modality for imaging of the abdominal aortic vasculature

Answer 3

digital subtraction arteriogram

Question 4

what syndrome associated with the SMA can be assessed with a mid-saggital view

Answer 4

nutcracker syndrome

Question 5

when 3rd part of duodenum is compressed between aorta and SMA resulting in partial/complete blockage of duodenum

Answer 5

SMA syndrome

Question 6

a diverticulum formation in the esophageal wall adjacent to the inferior pharyngeal constrictor and cricopharyngeus m
notorious for trapping food and causing severe halitosis

Answer 6

zenker’s diverticulum, seen on imaging as a pouch on the esophagus

Question 7

ulcerative colitis can be easily identified in imaging due to what process that affects the smooth muscle of the colon

Answer 7

lead pipe appearance

spasms of longitudinal muscle lead to fibrosis - loss of haustral markings throughout entire colon

Question 8

caused by high concentrations of cholesterol or bilirbuin in bile

Answer 8

cholelithiasis

Question 9

best modality to check for cholelithiasis

Answer 9

ultrasonography

Question 10

beak sign is useful in diagnosing what

Answer 10

arterial dissection - looks like a wedge

Question 11

narrowing of esophagus caused by a ring of mucosal tissue

Answer 11

shatzki ring