Health LibraryTests & ProceduresMRI Scan: What It Is and How to Prepare
Tests & Procedures

MRI Scan: What It Is and How to Prepare

A powerful imaging test that uses magnetism — no radiation.

Medically reviewed
Updated 2026

Preparation

Remove all metal. Tell the staff about any implants, pacemakers, or metal fragments.

During the scan

You will lie still for 20–60 minutes in a tube; earplugs help with the loud noise. Contrast dye may be given intravenously.

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