Abstract
High dose rate (HDR) brachytherapy is an effective local treatment for gynecologic malignancies. Hybrid intracavitary/interstitial gynecologic applicators deliver a more conformal dose to target volumes in locally advanced disease, though may increase doses to surrounding organs at risk (OARs). We adopted use of a new and novel hybrid applicator with two lunar-shaped ovoids that form a ring with ovoid holes with the ability to pass interstitial needles at both straight and oblique angles, a perineal template for wider parametrial and vaginal source distribution as well as multi-channel vaginal extension caps for enhanced proximal dose coverage (“Venezia” Elekta AB, Sweden). We performed a retrospective dosimetric analysis of the new applicator and comparison with the our standard split ring (Mick Radionuclear, New York).
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