Imaging of Abd

Question 1

Which imaging has radiation: CT or MRI?

Answer 1

CT

Question 2

Which imaging is faster: CT or MRI?

Answer 2

CT

Question 3

Which imaging is good for characterizing lesions?

Answer 3

MRI

Question 4

Which imaging is best for spatial resonution and calcification (stones)?

Answer 4

CT

Question 5

What imaging is good for pelvic organs?

Answer 5

MRI

Question 6

What imaging uses iodine-based IV contrast?

Answer 6

CT

Question 7

What imaging uses gadolinium-based IV contrast?

Answer 7

MRI

Question 8

What structures are seen at T11?

Answer 8

Spleen, stomach, liver, thoracic aorta, IVC, diaphragm, inferior lung

Question 9

What structures are seen at T12?

Answer 9

Pancreas, spleen, kidneys (left more), gallbladder, porta triad, SMA, aorta, IVC, small bowel

Question 10

What structures are seen at T12-L1?

Answer 10

Kidneys, gallbladder, biliary tree, SMA, left rena vein, aorta, vena cava, small bowel/colon

Question 11

What structures are seen at L3-L4?

Answer 11

Right kidney, small bowel, asc and desc colon, abd muscles (psoas)

Question 12

What modality is used to dx bile and pancreatic duct problems?

Answer 12

ERCP

—> endoscopic retrograde cholangiopancreatography

Question 13

What method is used to view abdominal aortic vasculature?

Answer 13

digital subtraction arteriography

Question 14

What view is useful in dx SMA and nutcracker syndromes?

Answer 14

Mid-sagittal view

Question 15

What syndrome is caused by compression of 3rd duodenum between aorta and SMA?

Answer 15

Superior Mesenteric Artery Syndrome

Question 16

What are the sx of SMA syndrome?

Answer 16

N, V, fullness, abd pain, weight loss

–>surgery if other tmt don’t work

Question 17

What occurs when left renal vein is compressed between SMA and aorta?

Answer 17

Nutcracker syndrome

Question 18

What can nutcracker syndrome lead to?

Answer 18

renal venous HTN, disruption of thin veins in collecting system of kidneys–> HEMATURIA

Question 19

What is the most common cause of ascites?

Answer 19

portal HTN

–> also salt and water retention d/t HF, ESRD, cancer

Question 20

What can treat ascites?

Answer 20

diuretics, paracentesis

Question 21

What are sx of hiatal hernias?

Answer 21

reflu, SOB d/t age-related changes to stomach and/or diaphragm

Question 22

What problem is notorious for trapping food and causing severe halitosis?

Answer 22

Zenker’s Diverticulum

Question 23

What occurs in Zenker’s Diverticulum?

Answer 23

diverticular forms in esophageal wall adjacent to inferio pharyngeal constrictor and cricopharyngeus M

Question 24

What are sx of Zenker’s Diverticulum?

Answer 24

dysphagia, food stuck in throat, aspiration, regurg hours after eating

Question 25

Marking of ulcerative colitis on CT

Answer 25

Lead pipe: spasm of longitudinal muscles/ irreversible fibrosis causes them to be straight and white --> loss of haustral marking entire colon

Question 26

What imaging is used for cholelithiasis?

Answer 26

ultrasound

Question 27

What is Shatzki Ring?

Answer 27

narrowing esophagus d/t ring of mucosal/ muscluar tissue lining esophagus --> difficulty passing liquids and food

Question 28

What is Hirschsprung's Disease?

Answer 28

megacolon d/t absence of ENS (no migration of NCC)--> lack of peristalsis, increased wall thickening