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Medical physics
Jul, 2021;48 (7): e733-e770.

Recommendations on the practice of calibration, dosimetry, and quality assurance for gamma stereotactic radiosurgery: Report of AAPM Task Group 178.

Paula L Petti, Mark J Rivard, Paola E Alvarez, Greg Bednarz, J Daniel Bourland, Larry A DeWerd, Robert E Drzymala, Jonas Johansson, Keith Kunugi, Lijun Ma, Sheridan G Meltsner, Gennady Neyman, Jan P Seuntjens, Almon S Shiu, Steven J Goetsch
Author Information
  1. Paula L Petti: Gamma Knife Center, Washington Hospital, Fremont, CA, 94538, USA.
  2. Mark J Rivard: Department of Radiation Oncology, Alpert Medical School of Brown University, Providence, RI, 02903, USA.
  3. Paola E Alvarez: Radiological Physics Center, University of Texas MD Anderson Cancer Center, Houston, TX, 77054, USA.
  4. Greg Bednarz: Department of Radiation Oncology, University of Pittsburgh Medical Center, Pittsburgh, PA, 15232, USA.
  5. J Daniel Bourland: Department of Radiation Oncology, Wake Forest University, Winston-Salem, NC, 27157, USA.
  6. Larry A DeWerd: Accredited Dosimetry and Calibration Laboratory, University of Wisconsin, Madison, WI, 53705, USA.
  7. Robert E Drzymala: Department of Radiation Oncology, Washington University, Saint Louis, MO, 63119, USA.
  8. Jonas Johansson: Elekta Instrument AB, SE-103-93, Stockholm, Sweden.
  9. Keith Kunugi: Accredited Dosimetry and Calibration Laboratory, University of Wisconsin, Madison, WI, 53705, USA.
  10. Lijun Ma: Department of Radiation Oncology, University California-San Francisco, San Francisco, CA, 94143, USA.
  11. Sheridan G Meltsner: Department of Radiation Oncology, Duke University Medical Center, Durham, NC, 27713, USA.
  12. Gennady Neyman: Department of Radiation Oncology, The Cleveland Clinic, Cleveland, OH, 44195, USA.
  13. Jan P Seuntjens: Department of Medical Physics, McGill University, Montreal, QC, H4A3J1, Canada.
  14. Almon S Shiu: Department of Radiation Oncology, University of Southern California, Los Angeles, CA, 90033, USA.
  15. Steven J Goetsch: San Diego Gamma Knife Center, La Jolla, CA, 92037, USA.
PMID: 33690912 DOI: 10.1002/mp.14831

Abstract

The American Association of Physicists in Medicine (AAPM) formed Task Group 178 (TG-178) to perform the following tasks: review in-phantom and in-air calibration protocols for gamma stereotactic radiosurgery (GSR), suggest a dose rate calibration protocol that can be successfully utilized with all gamma stereotactic radiosurgery (GSR) devices, and update quality assurance (QA) protocols in TG-42 (AAPM Report 54, 1995) for static GSR devices. The TG-178 report recommends a GSR dose rate calibration formalism and provides tabulated data to implement it for ionization chambers commonly used in GSR dosimetry. The report also describes routine mechanical, dosimetric, and safety checks for GSR devices, and provides treatment process quality assurance recommendations. Sample worksheets, checklists, and practical suggestions regarding some QA procedures are given in appendices. The overall goal of the report is to make recommendations that help standardize GSR physics practices and promote the safe implementation of GSR technologies.

Keywords

Gamma Knife calibration dosimetry gamma stereotactic radiosurgery quality assurance

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MeSH Term

Calibration
Gamma Rays
Phantoms, Imaging
Radiometry
Radiosurgery
United States
Journal Article

Word Cloud

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