Women suffer more than men from this disorder of the small vessels compared to the large vessels. This results in delays in diagnosis, missed opportunities for treatment, and likely contributes to the increased death rate from heart disease in women compared to men. Current testing for small vessel disease is invasive and not performed routinely and women are often not initiated on appropriate lifesaving treatment. New imaging and noninvasive technology exists that may improve this situation. Imaging techniques such as cardiac magnetic resonance imaging (CMR) can now show the inner layers of the heart where the small vessel abnormality and myocardial ischemia exist. These techniques, while promising, have not been tested to determine if they can be used to diagnose and treat the small vessel coronary heart disease condition. They also have not been studied extensively in women without heart disease.