Characterization of the Cardiac Phenotype of Friedreich's Ataxia (FRDA)

"CMR is a non-invasive way to take a high-resolution image of the heart and vessels. CMR uses powerful magnets and radio waves to obtain the image. During the CMR, you will have a substance injected into your vein called contrast to get a better picture of the heart."

You will be asked to pedal on a bicycle with your arms to see how much work you can do and how far you can go.

An echocardiogram is an ultrasound of the heart done at rest.

The blood test involves drawing blood from a vein in the arm by placing a needle in it. The total amount of blood to be drawn for a single visit will be up to 57 mL (12 teaspoons).