Which imaging modality is considered the test of choice to help confirm multiple sclerosis?

Which imaging modality is considered the test of choice to help confirm multiple sclerosis?

• A. MRI with gadolinium
• B. CT scan with contrast
• C. Ultrasound
• D. X-ray

Answer: (A)

MRI with gadolinium is the imaging modality of choice for confirming multiple sclerosis. Magnetic resonance imaging detects demyelinating plaques in the brain and spinal cord with high sensitivity, capturing lesions in different regions and at different times—this helps establish dissemination in time and space, which are key criteria for diagnosis. The gadolinium contrast highlights actively inflamed lesions, showing ongoing disease activity and aiding follow-up assessment. Other imaging methods like CT, ultrasound, or plain X-ray have far lower sensitivity for CNS white-matter lesions and cannot reliably confirm MS, making them unsuitable as the primary confirmatory test.

MRI with gadolinium is the imaging modality of choice for confirming multiple sclerosis. Magnetic resonance imaging detects demyelinating plaques in the brain and spinal cord with high sensitivity, capturing lesions in different regions and at different times—this helps establish dissemination in time and space, which are key criteria for diagnosis. The gadolinium contrast highlights actively inflamed lesions, showing ongoing disease activity and aiding follow-up assessment. Other imaging methods like CT, ultrasound, or plain X-ray have far lower sensitivity for CNS white-matter lesions and cannot reliably confirm MS, making them unsuitable as the primary confirmatory test.