Assessment of Early Radiation-Induced Changes in Left Ventricular Function by Myocardial Strain Imaging After Breast Radiation Therapy

•GLS and hsTnI were measured to evaluate for early RT-induced cardiovascular injury. •There is no significant change in GLS or hsTnI after contemporary breast RT. •MHD of contemporary breast RT is low and not associated with changes in LVEF/GLS. •Alternative early surrogate markers of RT-induced cardiovascular injury are needed. Background Radiation therapy (RT)-induced cardiotoxicity is among the concerning sequelae of breast cancer (BCA)...