Which statement is true about MR and CT imaging?

• A. True
• B. False
• C. Not applicable
• D. Neither

Answer: (A)

Both MR and CT are established imaging modalities used in diagnostic radiology, each based on different physical principles and offering complementary strengths. CT uses X-ray beams and detectors to measure how tissues attenuate radiation, producing fast, high-resolution images that are especially good for bone, acute bleeding, and chest or abdominal anatomy. MRI uses a strong magnetic field and radiofrequency pulses to visualize hydrogen protons, yielding excellent soft-tissue contrast and detail without ionizing radiation, though it takes longer and has certain safety considerations with implants or metal objects. Because they are both valid imaging techniques routinely used to gain diagnostic information, the statement about MR and CT imaging being true is correct. The other options (not applicable or false) don’t fit because these modalities are indeed real, widely used imaging methods.