Magnetic resonance imaging (MRI)

Definition

Magnetic resonance imaging (MRI) is a non-invasive imaging technique that uses strong magnetic fields and radio waves to produce detailed images of the inside of the body. It is particularly useful for visualizing soft tissues, including the brain.

5 Must Know Facts For Your Next Test

1. MRI is often used to detect and monitor neurological conditions such as epilepsy.
2. It can identify structural abnormalities in the brain that may contribute to seizure disorders.
3. MRI does not use ionizing radiation, making it safer for repeated use compared to CT scans.
4. Patients with certain types of metal implants or pacemakers cannot undergo MRI due to the strong magnetic fields used.
5. Contrast agents, like gadolinium, may be used in MRI scans to enhance image clarity and detail.

Review Questions

• Why is MRI preferred over CT scans for monitoring epilepsy?
• What are some safety concerns associated with MRI?
• How can MRI help in diagnosing intracranial emergencies?

Related terms

Electroencephalogram (EEG):

A test that measures electrical activity in the brain and is commonly used to diagnose epilepsy.

Computed Tomography (CT) Scan: An imaging procedure that uses X-rays to create detailed pictures of structures inside the body.

Gadolinium: A contrast agent used in MRI scans to improve image quality by highlighting specific areas within the body.