OUTCOME
By the end of the lesson you will be able to describe how images are made with radioactive tracers and consider some of the hazards and safety issue. you will be able to describe how PET and MRI scans are created
An MRI uses the effect of strong magnetic fields on the on nuclei in the body.
A PET scan uses isotopes that decay to emit positrons, positively charged electrons or beta particles
LEARNING TASKS
Explain
1. How are different areas of the body targeted in radio-imaging?
2. What does PET stand for?
3. What happens when a positron meets and electron?
4. how can this be used in imaging?
5. What does MRI stand for?
6. How does the MRI effect protons?
7. What does the radio frequency pulse do?
8. How is an image then formed?
Evaluate
Try questions from your text: Qs 35 - 43
Make sure you have asked two questions and answered two in the forums.