Naslov
Verifying Intensity Modulated Radiotherapy Treatment Dose Delivery through a National Audit

Autori
Jurković, Slaven ; Smilović Radojčić, Đeni ; Rajlić, David ; Švabić Kolacio, Manda ; Obajdin, Nevena

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, prošireni sažetak, znanstveni

Izvornik
Proceedings of the 10th Alpe-Adria Medical Physics Meeting [Elektronski vir] : AAMPM 2022 ; Ljubljana, Slovenia, June 1-3, 2022 / - , 2022, 25-31

Skup
10th Alpe-Adria Medical Physics Meeting

Mjesto i datum
Ljubljana, Slovenija, 01.06.2022. - 03.06.2022

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
dosimetry audits, absorbed dose delivery validation, Advanced radiotherapy techniques

Sažetak
Various types of audits in radiation oncology may contribute to improvements of local quality assurance systems and clinical practice. Particularly, dosimetry audits may be a tool for verification of treatment planning system (TPS) modelling and treatment delivery. The audit methodology should be feasible to be performed at different sites, on different devices and equipment used. As such it should not be complex and time consuming, but it should be as accurate as required by international recommendations. During past 15 years our group has organized and performed different types of national audits/surveys related to radiation oncology. They were actuated by the IAEA Quality Team in Radiation Oncology (QUATRO) which carried out an audit at University Hospital Rijeka in 2007. and related to the IAEA national projects of technical cooperation CRO6008, CRO6010 and CRO6012 which were performed at our premises. Advanced radiotherapy techniques require rigorous absorbed dose delivery validation. The procedures should be developed, verified, and incorporated in a comprehensive quality assurance programme via commissioning and regular patient pre-treatment verification of the absorbed dose distributions. The aims of the audit were to analyse absorbed dose distributions in terms of quality and deliverability, and to validate whether in-house pre-treatment verification results correlate to those of an external audit. Methodology is developed within the scope of the recent IAEA project CRO6019 Verifying Intensity Modulated Radiotherapy Treatment Dose Delivery — Method Development, Standardization and Implementation through a National Audit. Results obtained with local equipment showed that all absorbed dose distributions had gamma passing rates better than 95% for the recommended tolerance criteria of 3%/2 mm. Nevertheless, comparison of 2D absorbed dose distributions showed that for some results of the external audit conducted with auditor’s equipment are not in agreement with the results of pre-treatment verification performed with local QA equipment. Possible reasons are identified and measures for improvement recommended.

Izvorni jezik
Engleski

POVEZANOST RADA