Radiology Practice Test

Which imaging method is best suited for assessing spinal disc herniation?

1. X-ray

2. Ultrasound

3. Magnetic Resonance Imaging (MRI)

4. CT Scan

The correct answer is: Magnetic Resonance Imaging (MRI)

Magnetic Resonance Imaging (MRI) is the most effective imaging method for assessing spinal disc herniation due to its exceptional ability to visualize soft tissues, including intervertebral discs, nerves, and the surrounding structures in the spine. MRI provides detailed images that allow for the identification of disc protrusions, tears in the annulus fibrosus, and any resultant nerve compression. This level of detail is crucial for diagnosing conditions related to disc herniation since symptoms often arise from interactions between the discs and spinal nerves, which MRI effectively highlights. In contrast, X-rays primarily show bony structures and may miss subtle signs of disc herniation, such as vertebral body alignment or changes in disc space height. Ultrasound is generally not used for evaluating spinal structures because it is more effective for superficial structures and organs. While CT scans can be helpful in assessing bony anatomy and may identify some disc herniations, they are less effective than MRI in visualizing soft tissue details and clarifying the extent of the herniation. Thus, MRI stands out as the superior modality for this specific evaluation.