New imaging scans to predict heart surgery success in severe heart failure

This trial is testing whether new imaging scans—specifically PET and SPECT scans—can better predict which patients with ischemic heart failure (severe heart failure caused by clogged arteries) will improve after receiving revascularization surgery or angioplasty. Currently, doctors use older imaging methods to decide who should have these procedures, but those methods don't always accurately predict who will benefit. This study hopes to develop better tools to identify the right patients for surgery.

Not all patients with severe heart failure improve after revascularization surgery, and the surgery carries real risks. Doctors need better ways to identify beforehand which patients are most likely to benefit, rather than relying on older imaging methods that have proven unreliable in major international studies.