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MRI vs CT: when is each modality used?

CT is fast and uses X-rays; MRI takes longer but often shows soft tissue better. The choice depends on the clinical question.

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MRI vs CT: when is each modality used?

CT

Ideal for trauma, pulmonary embolism, acute abdomen and when speed matters. Uses ionising radiation.

MRI

No ionising radiation; often better soft-tissue contrast. Downsides: longer scan, noise, restrictions with some metal implants.

Practical advice

Follow your referrer's protocol; the radiologist can advise if unsure which scan fits best.

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