Imaging Upper GI Flashcards
Where are haustra found?
Large bowel
Where are valvulae conniventes found?
Small bowel
How is the oesophagus studied using barium radiology?
Barium swallow
How is the stomach studied using barium radiology?
Barium meal
How is the small intestine studied using barium radiology?
Barium follow through, small bowel enema
How is the colon studied using barium radiology?
Barium enema
What is the prep. for double contrast barium radiology?
NBM 4 hours
SM relaxant
Barium - coats mucosa
Gas (air or CO2) - distends bowel walls
What 3 anterior indentations do you look for in a barium swallow?
- Aortic arch
- Left main bronchus
- Left atrium
What are oesophageal strictures initially consdiered?
Cancer until proven otherwise
What are single contrast techniques used for?
Acute setting
No starving
Just to show blockage/leak
What is the purpose of a prone motility study?
Assesses oesophageal motility - peristalsis
1 & 2 = normal
3 = abnormal contractions - no directions, trembling, spasm
What is upper GI endoscopy useful for detecting?
Barrets oesophagus
Stratified squamous -> Simple columnar
Predisposes to adenocarcinoma
What is an upper GI CT used for?
- Staging known oesophageal/gastric cancers + post-op complications
- Need gastric distention - IV buscopan, H2O, omnipaque
What’s used as a positive oral contrast?
Gastrografin
Anatomy looks white
What’s used as a negative oral contrast?
Water
Anatomy looks dark
Preferred
