Cardiac MRI Biomarker Testing (GCC 1618)

The goal is to assess the validity of CMR and biomarker examinations before and after radiotherapy for lung cancer, thymic cancer, mesothelioma and breast cancers will demonstrate evidence of cardiac strain and dysfunction proportional to the extent of cardiac exposure during the course of radiation. The investigators intention is to conduct a pilot study of 10 patients receiving moderate doses of radiation exposure to the heart (5 lung cancer patients, , thymic cancer or mesothelioma and 5 breast cancer patients) when treated by our current institutional standards with the idea that this could lead to a grant if early signs of cardiac injury can be measured. These patients' treatment plans would include contours to measure dose received by multiple structures within the heart (coronary vessels and all cardiac chambers) as well as the heart/pericardium itself. The investigators would obtain biomarkers by bloodwork before, during, and after radiotherapy for correlation with clinical outcomes and Cardiac MRIs obtained prior to and 1 year after completion of radiotherapy. Investigators would obtain biomarkers by bloodwork before, during, and after radiotherapy for correlation with clinical outcomes and Cardiac MRs obtained prior to and 1 year after completion of radiotherapy.