A new technique for performing interstitial implants for gynecologic malignancies using transvaginal ultrasound guidance.

Objectives: This study concerns a new technique that aims to achieve precise interstitial brachytherapy of pelvic recurrent tumors under transvaginal ultrasound (US) guidance, enhance the conformity index of the brachytherapy (BT), and improve the curative effect of radiotherapy for gynecological oncology patients with pelvic relapse.

Methods: A real-time transvaginal US-guided interstitial implant device was developed to assist in implant BT. Prior to implant brachytherapy, the size and location of the tumor in the pelvis and the interrelationship with adjacent organs were first assessed with intracavitary ultrasound.

Value of tube combined with real-time ultrasound-guided accurate interstitial high-dose-rate brachytherapy for post-operative pelvic side-wall recurrences of cervical cancer.

Purpose: Treatment of post-operative pelvic side-wall relapses of cervical cancer has always been a therapeutic challenge for radiation oncologists. Radiation dose boost to recurrent tumor by brachytherapy is necessary, but difficult to achieve. Our treatment center has successfully achieved precise transvaginal insertion of a pelvic side-wall mass, using a metal tube with real-time ultrasound guidance.