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Title: Feasibility study of using statistical process control to customized quality assurance in proton therapy

Abstract

Purpose: To evaluate and improve the reliability of proton quality assurance (QA) processes and, to provide an optimal customized tolerance level using the statistical process control (SPC) methodology. Methods: The authors investigated the consistency check of dose per monitor unit (D/MU) and range in proton beams to see whether it was within the tolerance level of the daily QA process. This study analyzed the difference between the measured and calculated ranges along the central axis to improve the patient-specific QA process in proton beams by using process capability indices. Results: The authors established a customized tolerance level of ±2% for D/MU and ±0.5 mm for beam range in the daily proton QA process. In the authors’ analysis of the process capability indices, the patient-specific range measurements were capable of a specification limit of ±2% in clinical plans. Conclusions: SPC methodology is a useful tool for customizing the optimal QA tolerance levels and improving the quality of proton machine maintenance, treatment delivery, and ultimately patient safety.

Authors:
;  [1]; ;  [2];  [3]
  1. Department of Radiation Oncology, Myongji Hospital, Goyang 412-270 (Korea, Republic of)
  2. Proton Therapy Center, National Cancer Center, Goyang 410-769 (Korea, Republic of)
  3. Department of Radiation Medicine and Applied Sciences, University of California, San Diego, California 92093 (United States)
Publication Date:
OSTI Identifier:
22409553
Resource Type:
Journal Article
Journal Name:
Medical Physics
Additional Journal Information:
Journal Volume: 41; Journal Issue: 9; Other Information: (c) 2014 American Association of Physicists in Medicine; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-2405
Country of Publication:
United States
Language:
English
Subject:
60 APPLIED LIFE SCIENCES; PATIENTS; PROCESS CONTROL; PROTON BEAMS; QUALITY ASSURANCE; RADIOTHERAPY

Citation Formats

Rah, Jeong-Eun, Oh, Do Hoon, Shin, Dongho, Kim, Tae Hyun, and Kim, Gwe-Ya, E-mail: gweyakim@gmail.com. Feasibility study of using statistical process control to customized quality assurance in proton therapy. United States: N. p., 2014. Web. doi:10.1118/1.4893916.
Rah, Jeong-Eun, Oh, Do Hoon, Shin, Dongho, Kim, Tae Hyun, & Kim, Gwe-Ya, E-mail: gweyakim@gmail.com. Feasibility study of using statistical process control to customized quality assurance in proton therapy. United States. doi:10.1118/1.4893916.
Rah, Jeong-Eun, Oh, Do Hoon, Shin, Dongho, Kim, Tae Hyun, and Kim, Gwe-Ya, E-mail: gweyakim@gmail.com. Mon . "Feasibility study of using statistical process control to customized quality assurance in proton therapy". United States. doi:10.1118/1.4893916.
@article{osti_22409553,
title = {Feasibility study of using statistical process control to customized quality assurance in proton therapy},
author = {Rah, Jeong-Eun and Oh, Do Hoon and Shin, Dongho and Kim, Tae Hyun and Kim, Gwe-Ya, E-mail: gweyakim@gmail.com},
abstractNote = {Purpose: To evaluate and improve the reliability of proton quality assurance (QA) processes and, to provide an optimal customized tolerance level using the statistical process control (SPC) methodology. Methods: The authors investigated the consistency check of dose per monitor unit (D/MU) and range in proton beams to see whether it was within the tolerance level of the daily QA process. This study analyzed the difference between the measured and calculated ranges along the central axis to improve the patient-specific QA process in proton beams by using process capability indices. Results: The authors established a customized tolerance level of ±2% for D/MU and ±0.5 mm for beam range in the daily proton QA process. In the authors’ analysis of the process capability indices, the patient-specific range measurements were capable of a specification limit of ±2% in clinical plans. Conclusions: SPC methodology is a useful tool for customizing the optimal QA tolerance levels and improving the quality of proton machine maintenance, treatment delivery, and ultimately patient safety.},
doi = {10.1118/1.4893916},
journal = {Medical Physics},
issn = {0094-2405},
number = 9,
volume = 41,
place = {United States},
year = {2014},
month = {9}
}