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Title: SU-E-T-649: Quality Assurances for Proton Therapy Delivery Equipment

Abstract

Purpose: The number of proton therapy centers has increased dramatically over the past decade. Currently, there is no comprehensive set of guidelines that addresses quality assurance (QA) procedures for the different technologies used for proton therapy. The AAPM has charged task group 224 (TG-224) to provide recommendations for QA required for accurate and safe dose delivery, using existing and next generation proton therapy delivery equipment. Methods: A database comprised of QA procedures and tolerance limits was generated from many existing proton therapy centers in and outside of the US. These consist of proton therapy centers that possessed double scattering, uniform scanning, and pencil beams delivery systems. The diversity in beam delivery systems as well as the existing devices to perform QA checks for different beam parameters is the main subject of TG-224. Based on current practice at the clinically active proton centers participating in this task group, consensus QA recommendations were developed. The methodologies and requirements of the parameters that must be verified for consistency of the performance of the proton beam delivery systems are discussed. Results: TG-224 provides procedures and QA checks for mechanical, imaging, safety and dosimetry requirements for different proton equipment. These procedures are categorized based onmore » their importance and their required frequencies in order to deliver a safe and consistent dose. The task group provides daily, weekly, monthly, and annual QA check procedures with their tolerance limits. Conclusions: The procedures outlined in this protocol provide sufficient information to qualified medical physicists to perform QA checks for any proton delivery system. Execution of these procedures should provide confidence that proton therapy equipment is functioning as commissioned for patient treatment and delivers dose safely and accurately within the established tolerance limits. The report will be published in late 2015.« less

Authors:
; ; ; ;  [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9]
  1. McLaren Cancer Institute, Flint, MI (United States)
  2. Washington University, Saint Louis, MO (United States)
  3. UT MD Anderson Cancer Center, Houston, TX (United States)
  4. University of Pennsylvania, Philadelphia, PA (United States)
  5. Paul Scherrer Institute, Villigen - Psi (Switzerland)
  6. MD Anderson Cancer Center, Houston, TX (United States)
  7. CDH Proton Center, Warrenville, IL (United States)
  8. McLaren-Flint, Flint, MI (United States)
  9. St. Jude Children’s Research Hospital, Memphis, TN (United States)
Publication Date:
OSTI Identifier:
22538158
Resource Type:
Journal Article
Resource Relation:
Journal Name: Medical Physics; Journal Volume: 42; Journal Issue: 6; Other Information: (c) 2015 American Association of Physicists in Medicine; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; BIOMEDICAL RADIOGRAPHY; DELIVERY; EQUIPMENT; PERFORMANCE; PROTON BEAMS; QUALITY ASSURANCE; RADIATION DOSES; RADIOTHERAPY; RECOMMENDATIONS; TOLERANCE

Citation Formats

Arjomandy, B, Kase, Y, Flanz, J, Yorke, E, Followill, D, Klein, E, Taylor, P, Ainsley, C, Safai, S, Sahoo, N, Pankuch, M, Park, S, and Farr, J. SU-E-T-649: Quality Assurances for Proton Therapy Delivery Equipment. United States: N. p., 2015. Web. doi:10.1118/1.4925012.
Arjomandy, B, Kase, Y, Flanz, J, Yorke, E, Followill, D, Klein, E, Taylor, P, Ainsley, C, Safai, S, Sahoo, N, Pankuch, M, Park, S, & Farr, J. SU-E-T-649: Quality Assurances for Proton Therapy Delivery Equipment. United States. doi:10.1118/1.4925012.
Arjomandy, B, Kase, Y, Flanz, J, Yorke, E, Followill, D, Klein, E, Taylor, P, Ainsley, C, Safai, S, Sahoo, N, Pankuch, M, Park, S, and Farr, J. Mon . "SU-E-T-649: Quality Assurances for Proton Therapy Delivery Equipment". United States. doi:10.1118/1.4925012.
@article{osti_22538158,
title = {SU-E-T-649: Quality Assurances for Proton Therapy Delivery Equipment},
author = {Arjomandy, B and Kase, Y and Flanz, J and Yorke, E and Followill, D and Klein, E and Taylor, P and Ainsley, C and Safai, S and Sahoo, N and Pankuch, M and Park, S and Farr, J},
abstractNote = {Purpose: The number of proton therapy centers has increased dramatically over the past decade. Currently, there is no comprehensive set of guidelines that addresses quality assurance (QA) procedures for the different technologies used for proton therapy. The AAPM has charged task group 224 (TG-224) to provide recommendations for QA required for accurate and safe dose delivery, using existing and next generation proton therapy delivery equipment. Methods: A database comprised of QA procedures and tolerance limits was generated from many existing proton therapy centers in and outside of the US. These consist of proton therapy centers that possessed double scattering, uniform scanning, and pencil beams delivery systems. The diversity in beam delivery systems as well as the existing devices to perform QA checks for different beam parameters is the main subject of TG-224. Based on current practice at the clinically active proton centers participating in this task group, consensus QA recommendations were developed. The methodologies and requirements of the parameters that must be verified for consistency of the performance of the proton beam delivery systems are discussed. Results: TG-224 provides procedures and QA checks for mechanical, imaging, safety and dosimetry requirements for different proton equipment. These procedures are categorized based on their importance and their required frequencies in order to deliver a safe and consistent dose. The task group provides daily, weekly, monthly, and annual QA check procedures with their tolerance limits. Conclusions: The procedures outlined in this protocol provide sufficient information to qualified medical physicists to perform QA checks for any proton delivery system. Execution of these procedures should provide confidence that proton therapy equipment is functioning as commissioned for patient treatment and delivers dose safely and accurately within the established tolerance limits. The report will be published in late 2015.},
doi = {10.1118/1.4925012},
journal = {Medical Physics},
number = 6,
volume = 42,
place = {United States},
year = {Mon Jun 15 00:00:00 EDT 2015},
month = {Mon Jun 15 00:00:00 EDT 2015}
}