On the potential of 2D ion chamber arrays for high-dose rate remote afterloading brachytherapy quality assurance.

. To investigate the potential of 2D ion chamber arrays to serve as a standalone tool for the verification of source strength, positioning and dwell time, within the framework ofIr high-dose rate brachytherapy device quality assurance (QA).A commercially available ion chamber array was used.

Dosimetric calculations and VIPAR polymer gel dosimetry close to the microSelectron HDR.

In the present study, different dosimetric methods were investigated for their ability to predict the energy dose in the vicinity of the microSelectron HDR 192Ir brachytherapy source. The results of a time-efficient Sievert integral model of proven accuracy in the cm distance range from all 192Ir sources were benchmarked against accurate Monte Carlo derived dosimetric data in the close vicinity of the source. This comparison revealed that the Sievert model is capable of accurate dosimetry even in the mm distance range from the source.