Contrast radiography Flashcards
1
Q
why might we use contrast for abdominal radiographs
A
to assess GIT transit times
distinguish structures of similar radiodensity
outline organs
identify leaks
identify flow to organs (IV contrast)
2
Q
List 6 characteristics of a good contrast media
A
seen on X-ray
non-metabolised or absorbed
non-radioactive
non-toxic
non-irritant
easily administered
3
Q
List 3 common contrast media for abdominal radiographs
A
barium sulphate
iodine
air
4
Q
why is contrast media not used frequently anymore
A
CT/MRI done instead
5
Q
what is fluroscopy
A
real time ‘negative’ radiography
what is white on X-ray is black on fluroscopy?
