Radiology Practice Test

In which scenario would an MRI be preferred over a CT scan?

1. For detecting fractures

2. To evaluate soft tissue injuries

3. When imaging the lungs

4. For routine abdominal scans

The correct answer is: To evaluate soft tissue injuries

An MRI is preferred over a CT scan when evaluating soft tissue injuries because it provides greater contrast resolution for soft tissue structures. This makes MRI particularly effective at visualizing muscles, ligaments, cartilage, and other non-bony tissues. The modality uses magnetic fields and radio waves to produce detailed images, allowing radiologists to assess the extent of soft tissue damage, such as tears or strains, and to differentiate between various types of soft tissue. In contrast, while CT scans are excellent for visualizing bone and can detect fractures efficiently, they are not as adept at delineating soft tissue structures. Since the question specifically involves soft tissue injuries, MRI is the better choice. Other scenarios listed, such as lung imaging and routine abdominal scans, often favor CT for its speed and efficiency, especially in emergency situations.