Magnetic Resonance Imaging (MRI):  A test used to examine the brain and other parts of the body.  MRI uses non-harmful magnetic field and radio waves to produce a three-dimensional image of a part of the body such as the brain.  These images are more detailed than CT scans.  Sometimes called nuclear magnetic resonance or NMR.

Magnetic Resonance Angiogram (MRA):  A newer imaging technique used to detect any blockage or hardening of the arteries in the neck or brain.  Similar to MRI, MRA uses strong magnetic field and radio waves to take a picture of the blood vessels.

Mobility:  Ability to move to get from one place to another (e.g. walking, standing up, transferring from one surface to another).

Muscle strength:  The force produced by a specific muscle or group of muscles.

Naso-gastric tube (NG tube):  A tube that is passed through the nose down the throat into the stomach to allow for feeding when a person has swallowing problems.