Brachytherapy template adaptor

A brachytherapy template and a brachytherapy template adaptor for the brachytherapy template. The brachytherapy template (2) comprises a plurality of through-passages, and the brachytherapy template adaptor (10) comprises a brachytherapy template adaptor body defining a plurality of adaptor through-passages (22) arrayed to be positioned in unique fluid registry with the plurality of through-passages of the brachytherapy template. At least a portion of the adaptor through-passages comprises a cylindrical surface have a smaller transverse span than the through-passages of the brachytherapy template. A kit comprising a brachytherapy template, an adaptor and a plurality of guide pins (30) is also provided. The guide pins are adapted to hold the template adaptor to the template so that each through passageway of the template adaptor extends in fluid communication with a through passageway of the template.