Diagnostic Procedures

The moments surrounding your child's diagnosis can be a stressful and confusing time. At The Heart Center, we want you to feel as comfortable as possible every step of the way. Below are brief definitions of our most common diagnostic procedures with links to more detailed resources. If you have any questions about your child's diagnosis, always ask your care team.


Learn more about an angiogram, also called an arteriogram, which is a test that is done to study the size and shape of your child's blood vessels.

Computed Tomography (CT) Scan

CT (Computed Tomography) Scan is a type of x-ray that takes pictures of your child's body. Here is what to expect if your child is schedule to have a CT scan. 

ECMO (Extracorporeal Membrane Oxygenation)

Learn more about Extracorporeal Membrane Oxygenation.

Exercise Stress Test

A stress test, sometimes called an exercise test, helps your doctor find out how well your body works when you are active. This test measures how well your heart, lungs and muscles function during physical activity.

24-Hour Holter Monitor

What to expect if your child is going to wear a Holter Monitor for a 24-hour test. 

MRI (Magnetic Resonance Imaging)

Magnetic Resonance Imaging (MRI) is a method of examining the inside of the body. The MRI machine is a large magnet that surrounds the body. It uses magnetic fields and radio frequencies instead of X-rays to produce images.

Pulse Oximetry

A routine test called Pulse Oximetry can help identify most infants with critical congenital heart disease.

Doctor examining x-ray


What to expect if your child is having an x-ray.

Heart Surgery Guide: Day of Surgery


The echocardiography laboratory at Nationwide Children’s interprets over 11,000 echocardiograms per year and is the largest volume echocardiography laboratory in the state.