MRI of the Head
Magnetic resonance imaging (MRI) is a noninvasive medical test that helps physicians diagnose and treat medical conditions.
MR imaging uses a powerful magnetic field, radio frequency pulses and a computer to produce detailed pictures of organs, soft tissues, bone and virtually all other internal body structures. The images can then be examined on a computer monitor, printed or copied to CD. MRI does not use ionizing radiation (x-rays).
Detailed MR images allow physicians to better evaluate various parts of the body and certain diseases that may not be assessed adequately with other imaging methods such as x-ray, ultrasound or computed tomography (also called CT or CAT scanning).
Currently, MRI is the most sensitive imaging test of the head (particularly in the brain) in routine clinical practice.
MR imaging of the head is performed to help diagnose:
- tumors of the brain.
- developmental anomalies of the brain.
- vascular anomalies of the head (aneurysm for example).
- disorders of the eyes and the inner ear.
- trauma patients (in selected patients).
- disease in the pituitary gland.
- certain chronic disorders of the nervous system, such as multiple sclerosis.
- causes of headache.
Physicians also use the MR examination to document brain abnormalities in patients with dementia