Dosimetry Measurement at XStrahl 200 and XStrahl 300 X-Ray Therapy Devices

Abstract

Purpose: To conduct a comparative analysis of the dosimetric characteristics of X-ray therapy devices XStrahl200 and XStrahl300 series (UK). Material and methods: 5 XStrahl 200 and 6 XStrahl 300 devices were used in this study. The measuring equipment included a PC Electrometer, a connecting cable and two ionization chambers for low and medium energies. Dosimetric measurements included measurements of the HVL for all defined modes of the devices and the absorbed dose at reference points for low and medium energies. Results: The values of HVL that were obtained for all of modes of both types of x-ray devices have a good match and correspond to the tolerant levels set in the documentation. The absorbed dose for reference applicators d3/20 and 10x10/50 has a small deviation for all devices. Conclusion: In general, the values of the averaged beams for all combinations of mode-applicator can be used as a reference when X-ray therapy devices calibrating, and can be helpful for medical physicists and dosimetrists avoid gross errors.