Statistical process control analysis for patient quality assurance of intensity modulated radiation therapy

Rena Lee; Kyubo Kim; Samju Cho; Sangwook Lim; Suk Lee; Jang Bo Shim; Hyun Do Huh; Sang Hoon Lee; Sohyun Ahn

doi:10.3938/jkps.71.717

Statistical process control analysis for patient quality assurance of intensity modulated radiation therapy

Rena Lee, Kyubo Kim, Samju Cho, Sangwook Lim, Suk Lee, Jang Bo Shim, Hyun Do Huh, Sang Hoon Lee, Sohyun Ahn

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

3 Citations (Scopus)

Abstract

This study applied statistical process control to set and verify the quality assurances (QA) tolerance standard for our hospital’s characteristics with the criteria standards that are applied to all the treatment sites with this analysis. Gamma test factor of delivery quality assurances (DQA) was based on 3%/3 mm. Head and neck, breast, prostate cases of intensity modulated radiation therapy (IMRT) or volumetric arc radiation therapy (VMAT) were selected for the analysis of the QA treatment sites. The numbers of data used in the analysis were 73 and 68 for head and neck patients. Prostate and breast were 49 and 152 by MapCHECK and ArcCHECK respectively. C_p value of head and neck and prostate QA were above 1.0, C_pml is 1.53 and 1.71 respectively, which is close to the target value of 100%. C_pml value of breast (IMRT) was 1.67, data values are close to the target value of 95%. But value of was 0.90, which means that the data values are widely distributed. C_p and C_pml of breast VMAT QA were respectively 1.07 and 2.10. This suggests that the VMAT QA has better process capability than the IMRT QA. Consequently, we should pay more attention to planning and QA before treatment for breast Radiotherapy.

Original language	English
Pages (from-to)	717-721
Number of pages	5
Journal	Journal of the Korean Physical Society
Volume	71
Issue number	10
DOIs	https://doi.org/10.3938/jkps.71.717
Publication status	Published - 2017 Nov 1

Bibliographical note

Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (No. 2015R1D1A1A01060463) and the Nuclear Safety Research Program through the Korea Radiation Safety Foundation(KORSAFe) and the Nuclear Safety and Security Commission(NSSC), Republic of Korea (Grant No. 1305033).

Publisher Copyright:
© 2017, The Korean Physical Society.

Keywords

Gamma index
Gamma pass rate
IMRT/VMAT QA
Process capability index
Statistical process control

ASJC Scopus subject areas

General Physics and Astronomy

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10.3938/jkps.71.717

Cite this

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title = "Statistical process control analysis for patient quality assurance of intensity modulated radiation therapy",

abstract = "This study applied statistical process control to set and verify the quality assurances (QA) tolerance standard for our hospital{\textquoteright}s characteristics with the criteria standards that are applied to all the treatment sites with this analysis. Gamma test factor of delivery quality assurances (DQA) was based on 3%/3 mm. Head and neck, breast, prostate cases of intensity modulated radiation therapy (IMRT) or volumetric arc radiation therapy (VMAT) were selected for the analysis of the QA treatment sites. The numbers of data used in the analysis were 73 and 68 for head and neck patients. Prostate and breast were 49 and 152 by MapCHECK and ArcCHECK respectively. Cp value of head and neck and prostate QA were above 1.0, Cpml is 1.53 and 1.71 respectively, which is close to the target value of 100%. Cpml value of breast (IMRT) was 1.67, data values are close to the target value of 95%. But value of was 0.90, which means that the data values are widely distributed. Cp and Cpml of breast VMAT QA were respectively 1.07 and 2.10. This suggests that the VMAT QA has better process capability than the IMRT QA. Consequently, we should pay more attention to planning and QA before treatment for breast Radiotherapy.",

keywords = "Gamma index, Gamma pass rate, IMRT/VMAT QA, Process capability index, Statistical process control",

author = "Rena Lee and Kyubo Kim and Samju Cho and Sangwook Lim and Suk Lee and Shim, {Jang Bo} and Huh, {Hyun Do} and Lee, {Sang Hoon} and Sohyun Ahn",

note = "Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (No. 2015R1D1A1A01060463) and the Nuclear Safety Research Program through the Korea Radiation Safety Foundation(KORSAFe) and the Nuclear Safety and Security Commission(NSSC), Republic of Korea (Grant No. 1305033). Publisher Copyright: {\textcopyright} 2017, The Korean Physical Society.",

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doi = "10.3938/jkps.71.717",

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T1 - Statistical process control analysis for patient quality assurance of intensity modulated radiation therapy

AU - Lee, Rena

AU - Kim, Kyubo

AU - Cho, Samju

AU - Lim, Sangwook

AU - Lee, Suk

AU - Shim, Jang Bo

AU - Huh, Hyun Do

AU - Lee, Sang Hoon

AU - Ahn, Sohyun

N1 - Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (No. 2015R1D1A1A01060463) and the Nuclear Safety Research Program through the Korea Radiation Safety Foundation(KORSAFe) and the Nuclear Safety and Security Commission(NSSC), Republic of Korea (Grant No. 1305033). Publisher Copyright: © 2017, The Korean Physical Society.

PY - 2017/11/1

Y1 - 2017/11/1

N2 - This study applied statistical process control to set and verify the quality assurances (QA) tolerance standard for our hospital’s characteristics with the criteria standards that are applied to all the treatment sites with this analysis. Gamma test factor of delivery quality assurances (DQA) was based on 3%/3 mm. Head and neck, breast, prostate cases of intensity modulated radiation therapy (IMRT) or volumetric arc radiation therapy (VMAT) were selected for the analysis of the QA treatment sites. The numbers of data used in the analysis were 73 and 68 for head and neck patients. Prostate and breast were 49 and 152 by MapCHECK and ArcCHECK respectively. Cp value of head and neck and prostate QA were above 1.0, Cpml is 1.53 and 1.71 respectively, which is close to the target value of 100%. Cpml value of breast (IMRT) was 1.67, data values are close to the target value of 95%. But value of was 0.90, which means that the data values are widely distributed. Cp and Cpml of breast VMAT QA were respectively 1.07 and 2.10. This suggests that the VMAT QA has better process capability than the IMRT QA. Consequently, we should pay more attention to planning and QA before treatment for breast Radiotherapy.

AB - This study applied statistical process control to set and verify the quality assurances (QA) tolerance standard for our hospital’s characteristics with the criteria standards that are applied to all the treatment sites with this analysis. Gamma test factor of delivery quality assurances (DQA) was based on 3%/3 mm. Head and neck, breast, prostate cases of intensity modulated radiation therapy (IMRT) or volumetric arc radiation therapy (VMAT) were selected for the analysis of the QA treatment sites. The numbers of data used in the analysis were 73 and 68 for head and neck patients. Prostate and breast were 49 and 152 by MapCHECK and ArcCHECK respectively. Cp value of head and neck and prostate QA were above 1.0, Cpml is 1.53 and 1.71 respectively, which is close to the target value of 100%. Cpml value of breast (IMRT) was 1.67, data values are close to the target value of 95%. But value of was 0.90, which means that the data values are widely distributed. Cp and Cpml of breast VMAT QA were respectively 1.07 and 2.10. This suggests that the VMAT QA has better process capability than the IMRT QA. Consequently, we should pay more attention to planning and QA before treatment for breast Radiotherapy.

KW - Gamma index

KW - Gamma pass rate

KW - IMRT/VMAT QA

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ER -

Statistical process control analysis for patient quality assurance of intensity modulated radiation therapy

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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