In-depth

Cardiac catheterization

Cardiac catheterization is used as a test for some heart conditions and as a procedure to treat some types of heart disease. Find out more.

CT scan

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

Dizziness

Dizziness has many possible causes. The cause of dizziness may be simple, or dizziness may be a sign of a more serious disorder.

Echocardiogram

Echocardiogram allows your doctor to see your heart in motion. Here's what you need to know about the test.

Electrocardiogram

An electrocardiogram (ECG or EKG) is a test that provides valuable clues about your heart health. Here's what you need to know about the test.

Headache

Most headaches aren't caused by a serious illness, but some could be a sign of a life-threatening condition.

Heart palpitations

Heart palpitations are skipped, fluttering or racing heartbeats that aren't usually a symptom of a serious heart problem. Discover the causes and symptoms of this condition.

MRI

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

Numbness

Shortness of breath

Shortness of breath can be frightening. Most of the time, a heart or lung condition is the cause.

Jul. 25, 2012

You Are ... The Campaign for Mayo Clinic

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