In-air calibration of an HDR 192Ir brachytherapy source using therapy ion chambers.

The Gammamed Plus 192Ir high dose rate brachytherapy sources were calibrated using the therapy level ionization chambers (0.1 and 0.6 cc) and the well-type chamber.

Dose uniformity assessment of intraluminal brachytherapy using HDR 192Ir stepping source.

Purpose: The aim of this study is to achieve dose uniformity for intraluminal implants by assessment of dose distributions for single catheter generated by using various combinations of source stopping spacing and optimization mode.

Materials And Methods: A dose distribution was generated using HDR 192Ir stepping source on single straight catheter of fixed length used for Intraluminal brachytherapy. The various combinations of source position spacing and optimization mode were used and these dose distributions were evaluated by using three different parameters.

The non-uniformity correction factor for the cylindrical ionization chambers in dosimetry of an HDR Ir brachytherapy source.

The aim of this study is to derive the non-uniformity correction factor for the two therapy ionization chambers for the dose measurement near the brachytherapy source. The two ionization chambers of 0.6 cc and 0.