Lecture 4 - Contrast Media Flashcards Preview

Body Logistics > Lecture 4 - Contrast Media > Flashcards

Flashcards in Lecture 4 - Contrast Media Deck (5)
Loading flashcards...
1
Q

What colour do positive (i.e.: barium & iodine) contrasts and negative contrasts (e.g.: water, air CO2) show on a scan?

A
Positive = White
Negative = Black/Dark
2
Q

Why is it important that a patients kidneys are in good working order before giving a contrast media?

A

95% of excretion of contrasts occur through glomerular filtration - therefore kidneys must be working.

3
Q

What is nuclear medicine? (Scintigraphy) - Give one example.

A
  • Nuclear medicine is when we inject radio-pharmaceuticals into the body that emit gamma ray and provide functional information we can relate to anatomy.
  • Example = PET scan
4
Q

Explain how PET scans work.

A
  • Give radio-nucleotides that emit high energy gamma rays
  • PET camera detects these rays
  • Hot spots are areas of high glucose metabolism
5
Q

Give an example of where PET scans are used.

A

In oncology - to detect tumour reoccurrence, assessment of treatment etc.