Imaging Flashcards
1
Q
Abdominal radiograph
A
- First line modality
- Distension, pain, vomiting & diarrhea
- PA chest supine & upright abd: most sensitive, free air, exclude thoracic etiology
- Left lat decubitus: bowel gas, free air, bowel perforation
- Supine: bowel gas, limited mobility
2
Q
Pearl sign
A
- Gas trapped in folds of bowel loops- air fluid level
- Sm bowel obstruction
3
Q
Oral cholecystography
A
- Ingestion of radioopaque compound to evaluate gallstones
4
Q
CT of abdomen
A
- Cross sectional images of abdomen
- Solid organs
- Acute & chronic pain
- Guide for biopsy
- Liver, renal, colonic, enteric, pancreatic
- Great detail of soft tissue and BV
5
Q
Double contrast study
A
- Air & barium used to delineate mucosa
- visualization of mucosa, not good for small lesions
6
Q
Upper GI/ barium swallow
A
- Ingestion of barium + x-rays
- Imaging of esophagus for lesions, swallowing, hiatal hernias, strictures
7
Q
Apple core sign
A
- Indication of cancer- mass in bowel
- Visualized with barium and x-ray
8
Q
Lower GI barium enema
A
- Enema into rectum to examine colon & rectum
- Abd pain, diarrhea, bloody stool, wt loss & change in bowel habits
- Diverticular disease
9
Q
Endoscopy
A
Visualization of GI tract- most common method of examining upper GI
- Gold standard for most upper GI dx
10
Q
Colonoscopy
A
- Colon cancer
- Obtain biopsy of polyps
11
Q
Abd US
A
- Detection of gall stones, appendicitis, kidney, bladder, gall, kidney & spleen pancreatic masses
- Used in acute abdominal pain
12
Q
String sign
A
String appearance in contrast X-ray
- Chron, pyloric stenosis- sever narrowing
13
Q
Stairstep pattern
A
- Asynchronous air-fluid levels in same bowel loop
- Small bowel obstruction
14
Q
Sub diaphragmatic free air-
A
Intraperitoneal air under diaphragm
- CXR
- Enlarged gastric bubble
15
Q
Cut off sign
A
Gaseous distention of proximal colon
- Acute pancreatitis
