The design of an audit test for 60Co brachytherapy treatment planning system

Journal of Medical Signals and Sensors

article

Mohammad Javad Tahmasebi Birgani¹  Hadis Khorshidsavar²  Ali Bagheri³  Amir Danyaei²  Neda Abdalvand⁴ 

[1] Department of Medical Physics, Medicine School, Department of Radiation Oncology, Golestan Hospital, Ahvaz Jundishapur University of Medical Science;Department of Medical Physics, Medicine School, Golestan Hospital, Ahvaz Jundishapur University of Medical Science;Department of Radiation Oncology, Golestan Hospital, Ahvaz Jundishapur University of Medical Science, Department of Radiation Oncology, Medicine School, Golestan Hospital, Ahvaz Jundishapur University of Medical Science;Department of Radiation Oncology, Golestan Hospital, Ahvaz Jundishapur University of Medical Science, Ahvaz, Department of Medical Physics, School of Medicine, Iran University of Medical Science

关键词: Audit;    brachytherapy;    dosimetry;    Plexiglas phantom;    radiotherapy;   

DOI  :  10.4103/jmss.JMSS_47_19

学科分类：内科医学

来源: Wolters Kluwer Medknow Publications

【 摘 要 】

Background: Auditing the treatment planning system (TPS) software for a radiotherapy unit is of paramount importance in any radiation therapy department. A Plexiglas phantom was proposed to measure the ionization of 60Co high dose rate (HDR) source and compare dose points in the planning system for auditing and verifying TPS. Methods: Auditing was performed using a Plexiglas phantom in an end-to-end test, and relative dose points were detected by a farmer-type ionization chamber and compared with the relative dose of similar points in TPS. The audit results were determined as pass optimal level (5%). Results: The comparison of the collected data revealed that 80% of the measured values were ?5% in the pass level, and 20% of the points were out of tolerance (between 5% and 6.99%). Conclusion: This study documented the appropriateness of the dosimetry audit test and this phantom design for the HDR brachytherapy TPS.

【 授权许可】

CC BY-NC-SA