An Introduction to Luminal GI imaging Flashcards
1
Q
Name imaging that has ionising raditiation
A
- X ray plain film
- CT
- Fluoroscopy
- Nuclear Medicine
2
Q
Name imaging that is non-ionising radiation
A
- MRI
- ultrasound
3
Q
Name the types of anatomical planes
A
- Coronal plane
- Sagittal plane
- transverse plane
4
Q
What does fluoroscopy do
A
- uses contrast to highlight the internal structures
5
Q
Name the type of CT
A
- portovenous - standard CT and contrast
- CT KUB - low dose and no contrast - good for looking for calcified stones
- Angiogram - to look at aorta and arteries
6
Q
What happens in functional imaging
A
- the tracer will accumulate in areas of high metabolic activity
7
Q
what does luminal GI anatomy entail
A
- oropharynx
- larynx
- oesophagus and stomach
- small bowel - jejunum and ileum
- large bowel - colon adn appendix
- accompanying mesenteries
8
Q
what does large bowel look like in the CT
A
- contains haustrations
9
Q
What does the small bowel look like in the CT
A
- folds are frequent in the jejnum and become less frequent in the ileum
- attached by mesentery
10
Q
What structures lie in the retroperitoneum
A
- D2
- D3
- Ascending colon
- descending colon
- rectum
- adrenal glands
- aorta
- IVC
- pancreas except tail, ureters and kidneys
11
Q
What structures are intraperitoneal
A
- stomach
- D1
- D4
- Jejunum
- ileum
- transvere colon
- sigmoid colon
12
Q
what does the imaging modality selection depend upon
A
- clinical question
- clinical status of patient
- body habitus
- availability
- expertise
- pregnancy
13
Q
what imaging should you use in bowel obstruction/perforation
A
- AXR
- CT (just in case you cannot see the fluid filled bowel on the AXR)
14
Q
what imaging should you use in ruptured AAA
A
CT (US for surveillance)
15
Q
What imaging should you use in inflammatory bowel disease
A
- US/MRI enterography
