Back to quiz

6. Which is NOT a drawback of CT?

  • identifies the major tissues
  • less detailed picture
  • uses x-rays

7. A CT scan uses tiny x-rays, true or false?

  • false - no x-rays are used, it is a camera
  • true - they are reduced in strength by density of the tissue they pass through and then detected to form a picture
  • true - they are reflected by tissue according to its colour and detected to form a picture
  • false - magnetic rays are used instead

8. What can be used to make the tissue more visible during a CT scan?

  • dyes
  • a dark room
  • morphine
  • water

9. What does fMRI enable?

  • watching areas of the brain in action
  • healing of the brain without surgery
  • quicker scanning than MRI

10. MRI scans use magnetic fields to create and image, true or false?

  • true
  • false