Vaginal point dose estimation in tandem-ovoid (T/O) tandem-ring (T/R) with high dose rate intracavitary brachytherapy (HDR-ICA) in carcinoma cervix

The tolerances of vaginal mucosa of 100-120 Gy suggested by Fletcher has been empirically followed. Subsequently, with the introduction of pulse and high dose rate brachytherapy, many GYN Applicators have been developed and in clinical use. One such applicator is Tandem-Ring (T/R) GYN applicator based on Stockholm loading system. Although, used in routine clinical practice, there is a general thinking that vaginal doses with T/R applicator are higher with reported literature sparse. With an aim to estimate and compare vaginal mucosal doses received by T/R with Tandem/Ovoid (T/O) applicator i.e. undertook this dosimetric study