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)

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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

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3
Q

List 3 common contrast media for abdominal radiographs

A

barium sulphate
iodine
air

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4
Q

why is contrast media not used frequently anymore

A

CT/MRI done instead

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5
Q

what is fluroscopy

A

real time ‘negative’ radiography
what is white on X-ray is black on fluroscopy?

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