Evaluation and performance of ArcCheck and film using gamma criteria in pre-treatment quality assurance of stereotactic ablative radiotherapy

Ramachandran, P, Tajaldeen, A, Taylor, D, Wanigaratne, D and Geso, M 2017, 'Evaluation and performance of ArcCheck and film using gamma criteria in pre-treatment quality assurance of stereotactic ablative radiotherapy', Journal of Medical Physics, vol. 42, no. 4, pp. 251-257.


Document type: Journal Article
Collection: Journal Articles

Title Evaluation and performance of ArcCheck and film using gamma criteria in pre-treatment quality assurance of stereotactic ablative radiotherapy
Author(s) Ramachandran, P
Tajaldeen, A
Taylor, D
Wanigaratne, D
Geso, M
Year 2017
Journal name Journal of Medical Physics
Volume number 42
Issue number 4
Start page 251
End page 257
Total pages 7
Publisher Wolters Kluwer - Medknow
Abstract Aim: The aim of this study is to assess the use of ArcCHECK (AC) as an alternative method to replace film dosimetry for pre-treatment quality assurance (QA) of three-dimensional conformal radiation therapy, intensity-modulated radiation therapy (IMRT), and volumetric-modulated arc therapy (VMAT) stereotactic ablative radiotherapy (SABR) treatment plans. Materials and Methods: Twenty-five patients with a varied diagnosis of lung, spine, sacrum, sternum, ribs, scapula, and femur undergoing SABR were selected for this study. Pre-treatment QA was performed for all the patients using ionization chamber and film dosimetry. Measurements were also carried out on an AC phantom. The planned and measured doses from the AC device and EBT3 films were compared using four different gamma criteria: 2%/2 mm, 3%/2 mm, 3%/1 mm, and 3%/3 mm. Results: The mean gamma passing rates at 3%/3 mm for all non-spine SABR cases were 98.79 ± 0.96 and 99.27 ± 1.03 with AC and films, respectively. The mean passing rates at 3%/2 mm for AC and films were 98.76 ± 0.42 and 99.43 ± 0.27 respectively for spine VMAT SABR, and 87.15 ± 2.45 and 99.79 ± 0.14 respectively for spine IMRT SABR. In the case of spine tumors, the gamma criterion was tightened due to the proximity of spinal cord to the planning target volume. Our results show that AC provides good results for all VMAT SABR plans. Conclusion: The AC results at 3%/3 mm were in good agreement with film dosimetry for most cases. We observed a significant reduction in QA time on using AC for SABR QA. This study showed that AC results are comparable to film dosimetry for all studied sites except for spine IMRT SABR.
Subject Medical Physics
Keyword(s) ArcCHECK
EBT3 films
stereotactic ablative radiotherapy
DOI - identifier 10.4103/jmp.JMP_132_16
Copyright notice © 2017 Journal of Medical Physics | open access
ISSN 0971-6203
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 1 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 0 times in Scopus Article
Altmetric details:
Access Statistics: 14 Abstract Views  -  Detailed Statistics
Created: Tue, 26 Mar 2019, 09:36:00 EST by Catalyst Administrator
© 2014 RMIT Research Repository • Powered by Fez SoftwareContact us