Have a go at answering the questions below. Don't worry if you get any wrong - after clicking 'Check Answers' the correct answer will be highlighted in green!
1. What is the correct order of tissue densities?
2. What is the contrast medium used in MRI?
3. How many times more radiation do you get from an abdominal X-ray, compared to a chest X-ray?
4. Is air bright or dark on ultrasound?