Quantitative analysis of plan evaluation using indices: comparison of HDR interstitial brachytherapy versus IMRT as a boost in carcinoma breast

Combinations of external beam radiotherapy and interstitial or intracavitary brachytherapy have been effectively used in variety of clinically settings since the introduction of megavoltage beam therapy in the 1950s. Generally, Brachytherapy is used to administer high doses to unresected or residual primary tumor while external beam radiotherapy is used to deliver more modest doses to larger volumes of adjacent tissue