Magnetic resonance imaging (MRI) scanner
The MRI scanner uses magnetic and radio waves, so there is no exposure to X-rays or other damaging radiation. Powerful magnetic signals are sent through the body, which affects the atoms, forcing them to move into a different position. As they move back into place, the nuclei of the atoms send out radio waves of their own. The scanner picks up these signals and a computer turns them into a very detailed picture of the body.
All Dr Foster health content is provided for general information only and should not be treated as a substitute for the medical advice of your own doctor or any other health care professional, or relied upon as a source of comprehensive practitioner material.
All Dr Foster health content has been peer reviewed by GPs and is updated anually when necessary.
Dr Foster is not responsible or liable for any diagnosis made or treatment given by a user based on the content of the supplied health content. Dr Foster is not liable for the contents of any external internet sites listed, nor does it endorse any commercial product or service mentioned or advised on any of the sites.
Always consult your own GP if you are concerned about your health.