Pericoronary Adipocyte Size Gradient

This study examines fat tissue around the heart's coronary arteries in people undergoing heart transplants, to better understand how fat cell size relates to heart disease type — specifically dilated versus ischemic cardiomyopathy. **You may be eligible if...** - You are between 30 and 90 years old - You have been diagnosed with dilated cardiomyopathy (an enlarged, weakened heart) or ischemic cardiomyopathy (heart muscle damage from blocked arteries) - You are undergoing a heart transplant at the IKEM hospital **You may NOT be eligible if...** - You have a combined diagnosis of both dilated and ischemic cardiomyopathy - You have arrhythmogenic cardiomyopathy (a different type of heart muscle disease) - You have congenital heart defects (heart problems present from birth) - You have not provided informed consent Talk to your doctor to see if this trial is right for you.