Abstract
Post mastectomy chest wall radiation is routinely delivered using tangential photon fields. However for left sided tumors underlying heart and left lung form major organs at risk and this report studies the use of single energy electron-beam radiation therapy in these patients. The aim of this study is to compare mean left lung dose, percentage volume of left lung receiving dose more than 20 Gy (V20 Gy), mean heart dose, percentage volume of heart receiving dose more than 25 Gy (V25 Gy) and 45 Gy (V45 Gy), percentage volume of planned target volume (PTV) receiving more than 95% of prescribed dose (V95%).
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