6. What type of radiation is used in CAT scans?
- Ultrasound
- X-rays
- Gamma rays
- Visible light
7. What do CAT scans use?
- Intense beams of X-rays that are strongly ionising
- Intense beams of X-rays that are weakly ionising
- Weak beams of X-rays that are strongly ionising
- Weak beams of X-rays that are weakly ionising
