GIT Imaging Flashcards
(28 cards)
If the patient is unable to stand what is the alternative view to see the air/fluid level
Lateral view
An abdominal x ray view used to look for free air
Left decubitus
Small bowel characteristics
- less than 3 cm wide.
- central.
- only seen if it contains gas.
- valvula conniventes.
Large bowel characteristics
- less than 6 cm wide, cecum and sigmoid up to 9 cm.
- Laterally.
- Haustrations.
- feces.
If only a segment of bowel is dilated this is called
Sentinel loop
Small pockets of gas within a fluid filled small bowel is called?
String of beads sign
Step ladder appearance is seen in case of?
Small bowel obstruction
Most common cause of bowel obstruction in industrial countries
Adhesions
Coffee bean appearance is classical for?
Sigmoid volvulus
When air fills the peritoneal cavity, both sides of the bowel wall will be outlined by air. This sign is?
Rigler sign
Football sign is seen in?
Massively air filled peritoneum
Air accumulation beneath the central tendon of the diaphragm. This sign is?
Cupola sign
Single contrast study
Barium is used alone
Double contrast study
Barium and air are used
When does gastrografin is used?
When perforation of the upper GI tract is suspected
Esophagogram indications
- dysphagia.
- motility.
- reflux.
- post op for leaks.
“Shouldering” seen in the esophagogram is a sign of?
Malignancy
Classically used to asses for gastric ulcers
Barium meal (also for detecting gastric carcinoma or gastroparesis)
Small bowel enema indications
Crohn’s disease
Contraindications of barium enema
- toxic megacolon.
- pseudomembranous colitis.
- endoscopic intervention (within 7 days of procedure).
- partial obstruction.
- perforation.
Can be used to asses diverticulosis
Barium enema
Loss of haustrations and lead pipe appearance is seen in?
UC
Apple core appearance is a sign of ?
Colon cancer
Modality of choice to asses gallbladder
US
