On using 3D γ-analysis for IMRT and VMAT pretreatment plan QA

Chuan Wu; Kelly E. Hosier; Kristen E. Beck; Marlyn B. Radevic; Joerg Lehmann; Hao H. Zhang; Aaron Kroner; Sharon C. Dutton; Seth A. Rosenthal; Jonathan K. Bareng; Mark D. Logsdon; David R. Asche

doi:10.1118/1.4711755

On using 3D γ-analysis for IMRT and VMAT pretreatment plan QA

Chuan Wu
, Kelly E. Hosier
, Kristen E. Beck
, Marlyn B. Radevic
, Joerg Lehmann
, Hao H. Zhang
, Aaron Kroner
, Sharon C. Dutton
, Seth A. Rosenthal
, Jonathan K. Bareng
, Mark D. Logsdon
, David R. Asche

Mathematics

Research output: Contribution to journal › Article › peer-review

37 Scopus citations

Abstract

Purpose: To investigate using 3D γ analysis for IMRT and VMAT QA. Methods: We explored and studied 3D γ-analysis by comparing TPS computed and EPID back-projection reconstructed doses in patient's CT images. Two 3D γ quantities, γ_PTV and γ₁₀, were proposed and studied for evaluating the QA results, and compared to 2D γ (MapCheck composite: γ_MC). Results: It was found that when 3(global)3 mm criteria was used, all IMRT and 90 of VMAT plans passed QA with a γ pass rate 90. A significant statistical correlation was observed between 3D and 2D γ-analysis results for IMRT QA if γ₁₀ and γ_MC are concerned, but no significant relation is found between γ_PTV and γ_MC. Conclusions: 3D γ analysis based on EPID dose back-projection may provide a feasible tool for IMRT and VMAT pretreatment plan QA.

Original language	English (US)
Pages (from-to)	3051-3059
Number of pages	9
Journal	Medical physics
Volume	39
Issue number	6
DOIs	https://doi.org/10.1118/1.4711755
State	Published - Jun 2012

Keywords

3D-Gamma
EPID
IMRT
QA
VMAT

ASJC Scopus subject areas

Biophysics
Radiology Nuclear Medicine and imaging

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10.1118/1.4711755

Cite this

@article{b8d0a123274a44b995ee67b06e12753d,

title = "On using 3D γ-analysis for IMRT and VMAT pretreatment plan QA",

abstract = "Purpose: To investigate using 3D γ analysis for IMRT and VMAT QA. Methods: We explored and studied 3D γ-analysis by comparing TPS computed and EPID back-projection reconstructed doses in patient's CT images. Two 3D γ quantities, γPTV and γ10, were proposed and studied for evaluating the QA results, and compared to 2D γ (MapCheck composite: γMC). Results: It was found that when 3(global)3 mm criteria was used, all IMRT and 90 of VMAT plans passed QA with a γ pass rate 90. A significant statistical correlation was observed between 3D and 2D γ-analysis results for IMRT QA if γ10 and γMC are concerned, but no significant relation is found between γPTV and γMC. Conclusions: 3D γ analysis based on EPID dose back-projection may provide a feasible tool for IMRT and VMAT pretreatment plan QA.",

keywords = "3D-Gamma, EPID, IMRT, QA, VMAT",

author = "Chuan Wu and Hosier, \{Kelly E.\} and Beck, \{Kristen E.\} and Radevic, \{Marlyn B.\} and Joerg Lehmann and Zhang, \{Hao H.\} and Aaron Kroner and Dutton, \{Sharon C.\} and Rosenthal, \{Seth A.\} and Bareng, \{Jonathan K.\} and Logsdon, \{Mark D.\} and Asche, \{David R.\}",

year = "2012",

month = jun,

doi = "10.1118/1.4711755",

language = "English (US)",

volume = "39",

pages = "3051--3059",

journal = "Medical physics",

issn = "0094-2405",

publisher = "John Wiley and Sons Ltd",

number = "6",

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TY - JOUR

T1 - On using 3D γ-analysis for IMRT and VMAT pretreatment plan QA

AU - Wu, Chuan

AU - Hosier, Kelly E.

AU - Beck, Kristen E.

AU - Radevic, Marlyn B.

AU - Lehmann, Joerg

AU - Zhang, Hao H.

AU - Kroner, Aaron

AU - Dutton, Sharon C.

AU - Rosenthal, Seth A.

AU - Bareng, Jonathan K.

AU - Logsdon, Mark D.

AU - Asche, David R.

PY - 2012/6

Y1 - 2012/6

N2 - Purpose: To investigate using 3D γ analysis for IMRT and VMAT QA. Methods: We explored and studied 3D γ-analysis by comparing TPS computed and EPID back-projection reconstructed doses in patient's CT images. Two 3D γ quantities, γPTV and γ10, were proposed and studied for evaluating the QA results, and compared to 2D γ (MapCheck composite: γMC). Results: It was found that when 3(global)3 mm criteria was used, all IMRT and 90 of VMAT plans passed QA with a γ pass rate 90. A significant statistical correlation was observed between 3D and 2D γ-analysis results for IMRT QA if γ10 and γMC are concerned, but no significant relation is found between γPTV and γMC. Conclusions: 3D γ analysis based on EPID dose back-projection may provide a feasible tool for IMRT and VMAT pretreatment plan QA.

AB - Purpose: To investigate using 3D γ analysis for IMRT and VMAT QA. Methods: We explored and studied 3D γ-analysis by comparing TPS computed and EPID back-projection reconstructed doses in patient's CT images. Two 3D γ quantities, γPTV and γ10, were proposed and studied for evaluating the QA results, and compared to 2D γ (MapCheck composite: γMC). Results: It was found that when 3(global)3 mm criteria was used, all IMRT and 90 of VMAT plans passed QA with a γ pass rate 90. A significant statistical correlation was observed between 3D and 2D γ-analysis results for IMRT QA if γ10 and γMC are concerned, but no significant relation is found between γPTV and γMC. Conclusions: 3D γ analysis based on EPID dose back-projection may provide a feasible tool for IMRT and VMAT pretreatment plan QA.

KW - 3D-Gamma

KW - EPID

KW - IMRT

KW - QA

KW - VMAT

UR - https://www.scopus.com/pages/publications/84863527560

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U2 - 10.1118/1.4711755

DO - 10.1118/1.4711755

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AN - SCOPUS:84863527560

SN - 0094-2405

VL - 39

SP - 3051

EP - 3059

JO - Medical physics

JF - Medical physics

IS - 6

ER -

On using 3D γ-analysis for IMRT and VMAT pretreatment plan QA

Abstract

Keywords

ASJC Scopus subject areas

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