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PURPOSE: To estimate the doses to the heart and coronary arteries from common breast cancer radiotherapy (RT) regimens used worldwide from the 1950s to the 1990s. METHODS AND MATERIALS: Virtual simulation and computed tomography planning were used to reconstruct the megavoltage and electron regimens. Manual planning was used for the orthovoltage and brachytherapy regimens. Several sources of variability associated with the dose estimates were assessed. RESULTS: Breast or chest wall RT resulted in whole heart doses of 0.9-14 Gy for left-sided and of 0.4-6 Gy for right-sided irradiation. Internal mammary chain RT delivered heart doses of 3-17 Gy and 2-10 Gy for left- and right-sided irradiation, respectively. For most regimens, the dose to the left anterior descending coronary artery was greater than the heart dose. Scar boost, supraclavicular fossa, and axillary RT delivered mean cardiac doses of

Original publication




Journal article


Int J Radiat Oncol Biol Phys

Publication Date





1484 - 1495


Breast Neoplasms, Coronary Vessels, Female, Heart, Humans, Posture, Radiation Dosage, Time Factors