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Radiology Essentials Quiz

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1. What is the principle mechanism of contrast in a T1-weighted MRI?

2. In ultrasound imaging, what is the role of the gel applied to the skin?

3. Which of the following is a characteristic feature of X-rays used in radiography?

4. For what purpose is a CT scan most often used?

5. What distinguishes a Doppler ultrasound from a standard ultrasound?

6. What is the primary hazard associated with X-ray imaging?

7. Why is MRI preferred over CT for imaging soft tissues?

8. Which imaging technique uses radioactive tracers?

9. How does contrast media improve the effectiveness of certain radiological exams?

10. What safety measure is essential when performing an MRI scan?