In-depth

Tests and diagnosis

CT scan

A CT scan is an imaging test that uses X-rays to produce detailed images of the inside of your body.

Lumbar puncture (spinal tap)

Lumbar puncture (spinal tap) — Overview covers definition, risks and results of this procedure.

MRI

MRI uses a magnetic field and radio waves to create detailed images of the organs and tissues within your body.

Apr. 24, 2012