Source strength determination in iridium-192 and cobalt-60 brachytherapy: A European survey on the level of agreement between clinical measurements and manufacturer certificates
Background and purpose: Brachytherapy treatment outcomes depend on the accuracy of the delivered dose distribution, which is proportional to the reference air-kerma rate (RAKR). Current societal recommendations require the medical physicist to compare the measured RAKR values to the manufacturer sou...
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doaj-11608d63d2ea4563b861abb30cff21682021-09-07T04:13:44ZengElsevierPhysics and Imaging in Radiation Oncology2405-63162021-07-0119108111Source strength determination in iridium-192 and cobalt-60 brachytherapy: A European survey on the level of agreement between clinical measurements and manufacturer certificatesJavier Vijande0Åsa Carlsson Tedgren1Facundo Ballester2Dimos Baltas3Panagiotis Papagiannis4Mark J. Rivard5Frank-André Siebert6Larry De Werd7Jose Perez-Calatayud8Departamento de Física Atómica, Molecular y Nuclear, Universitat de Valencia (UV), Burjassot, Spain; Unidad Mixta de Investigación en Radiofísica e Instrumentación Nuclear en Medicina (IRIMED), Instituto de Investigación Sanitaria La Fe (IIS-La Fe)—Universitat de Valencia (UV), Valencia, Spain; Instituto de Física Corpuscular, IFIC (UV-CSIC), Burjassot, Spain; Corresponding author at: Departamento de Física Atómica, Molecular y Nuclear, Universitat de Valencia (UV), Burjassot, Spain.Radiation Physics, Department of Medicine, Health and Caring Sciences (HMV), Linköping University, Linköping, Sweden; Department of Medical Radiation Physics and Nuclear Medicine, Karolinska University Hospital, Stockholm, Sweden; Department of Oncology Pathology, the Karolinska Institute, Stockholm, SwedenDepartamento de Física Atómica, Molecular y Nuclear, Universitat de Valencia (UV), Burjassot, Spain; Unidad Mixta de Investigación en Radiofísica e Instrumentación Nuclear en Medicina (IRIMED), Instituto de Investigación Sanitaria La Fe (IIS-La Fe)—Universitat de Valencia (UV), Valencia, SpainDivision of Medical Physics, Department of Radiation Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Germany; German Cancer Consortium (DKTK) Partner Site Freiburg, German Cancer Research Center (DKFZ), Heidelberg, GermanyMedical Physics Laboratory, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias, Athens, GreeceDepartment of Radiation Oncology, Alpert Medical School of Brown University, Providence, USAClinic of Radiotherapy, UniversityHospital of Schleswig−Holstein, Campus Kiel, Kiel, GermanyDepartment of Medical Physics, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States of AmericaUnidad Mixta de Investigación en Radiofísica e Instrumentación Nuclear en Medicina (IRIMED), Instituto de Investigación Sanitaria La Fe (IIS-La Fe)—Universitat de Valencia (UV), Valencia, Spain; Radiotherapy Department, La Fe Hospital, Valencia, and Clinica Benidorm, Alicante, SpainBackground and purpose: Brachytherapy treatment outcomes depend on the accuracy of the delivered dose distribution, which is proportional to the reference air-kerma rate (RAKR). Current societal recommendations require the medical physicist to compare the measured RAKR values to the manufacturer source calibration certificate. The purpose of this work was to report agreement observed in current clinical practice in the European Union. Materials and methods: A European survey was performed for high- and pulsed-dose-rate (HDR and PDR) high-energy sources (192Ir and 60Co), to quantify observed RAKR differences. Medical physicists at eighteen hospitals from eight European countries were contacted, providing 1,032 data points from 2001 to 2020. Results: Over the survey period, 77% of the 192Ir measurements used a well chamber instead of the older Krieger phantom method. Mean differences with the manufacturer calibration certificate were 0.01% ± 1.15% for 192Ir and –0.1% ± 1.3% for 60Co. Over 95% of RAKR measurements in the clinic were within 3% of the manufacturer calibration certificate. Conclusions: This study showed that the agreement level was generally better than that reflected in prior societal recommendations positing 5%. Future recommendations on high-energy HDR and PDR source calibrations in the clinic may consider tightened agreements levels.http://www.sciencedirect.com/science/article/pii/S2405631621000427RAKRCalibrationHDRPDRBrachytherapy |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Javier Vijande Åsa Carlsson Tedgren Facundo Ballester Dimos Baltas Panagiotis Papagiannis Mark J. Rivard Frank-André Siebert Larry De Werd Jose Perez-Calatayud |
spellingShingle |
Javier Vijande Åsa Carlsson Tedgren Facundo Ballester Dimos Baltas Panagiotis Papagiannis Mark J. Rivard Frank-André Siebert Larry De Werd Jose Perez-Calatayud Source strength determination in iridium-192 and cobalt-60 brachytherapy: A European survey on the level of agreement between clinical measurements and manufacturer certificates Physics and Imaging in Radiation Oncology RAKR Calibration HDR PDR Brachytherapy |
author_facet |
Javier Vijande Åsa Carlsson Tedgren Facundo Ballester Dimos Baltas Panagiotis Papagiannis Mark J. Rivard Frank-André Siebert Larry De Werd Jose Perez-Calatayud |
author_sort |
Javier Vijande |
title |
Source strength determination in iridium-192 and cobalt-60 brachytherapy: A European survey on the level of agreement between clinical measurements and manufacturer certificates |
title_short |
Source strength determination in iridium-192 and cobalt-60 brachytherapy: A European survey on the level of agreement between clinical measurements and manufacturer certificates |
title_full |
Source strength determination in iridium-192 and cobalt-60 brachytherapy: A European survey on the level of agreement between clinical measurements and manufacturer certificates |
title_fullStr |
Source strength determination in iridium-192 and cobalt-60 brachytherapy: A European survey on the level of agreement between clinical measurements and manufacturer certificates |
title_full_unstemmed |
Source strength determination in iridium-192 and cobalt-60 brachytherapy: A European survey on the level of agreement between clinical measurements and manufacturer certificates |
title_sort |
source strength determination in iridium-192 and cobalt-60 brachytherapy: a european survey on the level of agreement between clinical measurements and manufacturer certificates |
publisher |
Elsevier |
series |
Physics and Imaging in Radiation Oncology |
issn |
2405-6316 |
publishDate |
2021-07-01 |
description |
Background and purpose: Brachytherapy treatment outcomes depend on the accuracy of the delivered dose distribution, which is proportional to the reference air-kerma rate (RAKR). Current societal recommendations require the medical physicist to compare the measured RAKR values to the manufacturer source calibration certificate. The purpose of this work was to report agreement observed in current clinical practice in the European Union. Materials and methods: A European survey was performed for high- and pulsed-dose-rate (HDR and PDR) high-energy sources (192Ir and 60Co), to quantify observed RAKR differences. Medical physicists at eighteen hospitals from eight European countries were contacted, providing 1,032 data points from 2001 to 2020. Results: Over the survey period, 77% of the 192Ir measurements used a well chamber instead of the older Krieger phantom method. Mean differences with the manufacturer calibration certificate were 0.01% ± 1.15% for 192Ir and –0.1% ± 1.3% for 60Co. Over 95% of RAKR measurements in the clinic were within 3% of the manufacturer calibration certificate. Conclusions: This study showed that the agreement level was generally better than that reflected in prior societal recommendations positing 5%. Future recommendations on high-energy HDR and PDR source calibrations in the clinic may consider tightened agreements levels. |
topic |
RAKR Calibration HDR PDR Brachytherapy |
url |
http://www.sciencedirect.com/science/article/pii/S2405631621000427 |
work_keys_str_mv |
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