Needle-free cervical cancer treatment using helical multishield intracavitary rotating shield brachytherapy with the Yb Isotope.

Purpose: To assess the capability of an intracavitary Yb-based helical multishield rotating shield brachytherapy (RSBT) delivery system to treat cervical cancer. The proposed RSBT delivery system contains a pair of 1.25 mm thick platinum partial shields with 45° and 180° emission angles, which travel in a helical pattern within the applicator.