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.

Eye exam

Eye exam — Overview covers definition, what to expect and results of vision testing.

MRI

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

Ultrasound

Ultrasound imaging uses high-frequency sound waves to create images of structures in your body.

Treatments and drugs

Radiation therapy

Nov. 17, 2012

You Are ... The Campaign for Mayo Clinic

Mayo Clinic is a not-for-profit organization. Make a difference today.