Cardiac Magnetic Resonance for Early Detection of Chemotherapy or Radiation Therapy Induced Cardiotoxicity in Breast Cancer (CareBest)

Chemotherapy or radiation therapy-induced cardiotoxicity are well-recognized side effects in patients with cancer. The clinical significance of cardiotoxicity is growing with increasing cancer survivor-ship. Left ventricular (LV) functional assessment is the standard of reference to diagnose chemotherapy- or radiation therapy-induced cardiotoxicity. The investigators will investigate the usefulness of T1 mapping parameters for early detection and prediction of chemotherapy-, radiation therapy-, or other therapy-induced cardiotoxicity in breast cancer patients This study aimed to achieve early detection of chemotherapy- or radiation therapy-induced cardiotoxicity using T1 mapping magnetic resonance imaging (MRI) and determine a prognostic imaging factor of chemotherapy- or radiation therapy-induced cardiotoxicity in patients treated for breast cancer.