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Correlation analysis between 2D and quasi-3D gamma evaluations for both intensity-modulated radiation therapy and volumetric modulated arc therapy

Title
Correlation analysis between 2D and quasi-3D gamma evaluations for both intensity-modulated radiation therapy and volumetric modulated arc therapy
Authors
Kim, Jung-inChoi, Chang HeonWu, Hong-GyunKim, Jin HoKim, KyuboPark, Jong Min
Ewha Authors
김규보
SCOPUS Author ID
김규보scopus
Issue Date
2017
Journal Title
ONCOTARGET
ISSN
1949-2553JCR Link
Citation
vol. 8, no. 3, pp. 5449 - 5459
Keywords
2D gamma evaluationquasi-3D gamma evaluationpre-treatment patient-specific quality assuranceintensity-modulated radiation therapyvolumetric modulated arc therapy
Publisher
IMPACT JOURNALS LLC
Indexed
SCIE; SCOPUS WOS scopus
Abstract
The aim of this work was to investigate correlations between 2D and quasi-3D gamma passing rates. A total of 20 patients (10 prostate cases and 10 head and neck cases, H& N) were retrospectively selected. For each patient, both intensity-modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT) plans were generated. For each plan, 2D gamma evaluation with radiochromic films and quasi-3D gamma evaluation with fluence measurements were performed with both 2%/2 mm and 3%/3 mm criteria. Gamma passing rates were grouped together according to delivery techniques and treatment sites. Statistical analyses were performed to examine the correlation between 2D and quasi-3D gamma evaluations. Statistically significant difference was observed between delivery techniques only in the quasi-3D gamma passing rates with 2%/2 mm. Statistically significant differences were observed between treatment sites in the 2D gamma passing rates (differences of less than 8%). No statistically significant correlations were observed between 2D and quasi-3D gamma passing rates except the VMAT group and the group including both IMRT and VMAT with 3%/3 mm (r = 0.564 with p = 0.012 for theVMAT group and r = 0.372 with p = 0.020 for the group including both IMRT and VMAT), however, those were not strong. No strong correlations were observed between 2D and quasi-3D gamma evaluations.
DOI
10.18632/oncotarget.12279
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의과대학 > 의학과 > Journal papers
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