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Quality assurance of Cyberknife robotic stereotactic radiosurgery using an angularly independent silicon detector

PURPOSE: The aim of this work was to evaluate the use of an angularly independent silicon detector (edgeless diodes) developed for dosimetry in megavoltage radiotherapy for Cyberknife in a phantom and for patient quality assurance (QA). METHOD: The characterization of the edgeless diodes has been pe...

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Autores principales: Alhujaili, Sultan Fahad, Biasi, Giordano, Alzorkany, Faisal, Grogan, Garry, Al Kafi, Muhammed A., Lane, Jonathan, Hug, Benjamin, Aldosari, Abdullah H., Alshaikh, Sami, Farzad, Pejman Rowshan, Ebert, Martin A., Moftah, Belal, Rosenfeld, Anatoly B., Petasecca, Marco
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6333148/
https://www.ncbi.nlm.nih.gov/pubmed/30565856
http://dx.doi.org/10.1002/acm2.12496
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author Alhujaili, Sultan Fahad
Biasi, Giordano
Alzorkany, Faisal
Grogan, Garry
Al Kafi, Muhammed A.
Lane, Jonathan
Hug, Benjamin
Aldosari, Abdullah H.
Alshaikh, Sami
Farzad, Pejman Rowshan
Ebert, Martin A.
Moftah, Belal
Rosenfeld, Anatoly B.
Petasecca, Marco
author_facet Alhujaili, Sultan Fahad
Biasi, Giordano
Alzorkany, Faisal
Grogan, Garry
Al Kafi, Muhammed A.
Lane, Jonathan
Hug, Benjamin
Aldosari, Abdullah H.
Alshaikh, Sami
Farzad, Pejman Rowshan
Ebert, Martin A.
Moftah, Belal
Rosenfeld, Anatoly B.
Petasecca, Marco
author_sort Alhujaili, Sultan Fahad
collection PubMed
description PURPOSE: The aim of this work was to evaluate the use of an angularly independent silicon detector (edgeless diodes) developed for dosimetry in megavoltage radiotherapy for Cyberknife in a phantom and for patient quality assurance (QA). METHOD: The characterization of the edgeless diodes has been performed on Cyberknife with fixed and IRIS collimators. The edgeless diode probes were tested in terms of basic QA parameters such as measurements of tissue‐phantom ratio (TPR), output factor and off‐axis ratio. The measurements were performed in both water and water‐equivalent phantoms. In addition, three patient‐specific plans have been delivered to a lung phantom with and without motion and dose measurements have been performed to verify the ability of the diodes to work as patient‐specific QA devices. The data obtained by the edgeless diodes have been compared to PTW 60016, SN edge, PinPoint ionization chamber, Gafchromic EBT3 film, and treatment planning system (TPS). RESULTS: The TPR measurement performed by the edgeless diodes show agreement within 2.2% with data obtained with PTW 60016 diode for all the field sizes. Output factor agrees within 2.6% with that measured by SN EDGE diodes corrected for their field size dependence. The beam profiles’ measurements of edgeless diodes match SN EDGE diodes with a measured full width half maximum (FWHM) within 2.3% and penumbra widths within 0.148 mm. Patient‐specific QA measurements demonstrate an agreement within 4.72% in comparison with TPS. CONCLUSION: The edgeless diodes have been proved to be an excellent candidate for machine and patient QA for Cyberknife reproducing commercial dosimetry device measurements without need of angular dependence corrections. However, further investigation is required to evaluate the effect of their dose rate dependence on complex brain cancer dose verification.
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spelling pubmed-63331482019-01-23 Quality assurance of Cyberknife robotic stereotactic radiosurgery using an angularly independent silicon detector Alhujaili, Sultan Fahad Biasi, Giordano Alzorkany, Faisal Grogan, Garry Al Kafi, Muhammed A. Lane, Jonathan Hug, Benjamin Aldosari, Abdullah H. Alshaikh, Sami Farzad, Pejman Rowshan Ebert, Martin A. Moftah, Belal Rosenfeld, Anatoly B. Petasecca, Marco J Appl Clin Med Phys Radiation Oncology Physics PURPOSE: The aim of this work was to evaluate the use of an angularly independent silicon detector (edgeless diodes) developed for dosimetry in megavoltage radiotherapy for Cyberknife in a phantom and for patient quality assurance (QA). METHOD: The characterization of the edgeless diodes has been performed on Cyberknife with fixed and IRIS collimators. The edgeless diode probes were tested in terms of basic QA parameters such as measurements of tissue‐phantom ratio (TPR), output factor and off‐axis ratio. The measurements were performed in both water and water‐equivalent phantoms. In addition, three patient‐specific plans have been delivered to a lung phantom with and without motion and dose measurements have been performed to verify the ability of the diodes to work as patient‐specific QA devices. The data obtained by the edgeless diodes have been compared to PTW 60016, SN edge, PinPoint ionization chamber, Gafchromic EBT3 film, and treatment planning system (TPS). RESULTS: The TPR measurement performed by the edgeless diodes show agreement within 2.2% with data obtained with PTW 60016 diode for all the field sizes. Output factor agrees within 2.6% with that measured by SN EDGE diodes corrected for their field size dependence. The beam profiles’ measurements of edgeless diodes match SN EDGE diodes with a measured full width half maximum (FWHM) within 2.3% and penumbra widths within 0.148 mm. Patient‐specific QA measurements demonstrate an agreement within 4.72% in comparison with TPS. CONCLUSION: The edgeless diodes have been proved to be an excellent candidate for machine and patient QA for Cyberknife reproducing commercial dosimetry device measurements without need of angular dependence corrections. However, further investigation is required to evaluate the effect of their dose rate dependence on complex brain cancer dose verification. John Wiley and Sons Inc. 2018-11-22 /pmc/articles/PMC6333148/ /pubmed/30565856 http://dx.doi.org/10.1002/acm2.12496 Text en © 2018 The Authors. Journal of Applied Clinical Medical Physics published by Wiley Periodicals, Inc. on behalf of American Association of Physicists in Medicine. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Radiation Oncology Physics
Alhujaili, Sultan Fahad
Biasi, Giordano
Alzorkany, Faisal
Grogan, Garry
Al Kafi, Muhammed A.
Lane, Jonathan
Hug, Benjamin
Aldosari, Abdullah H.
Alshaikh, Sami
Farzad, Pejman Rowshan
Ebert, Martin A.
Moftah, Belal
Rosenfeld, Anatoly B.
Petasecca, Marco
Quality assurance of Cyberknife robotic stereotactic radiosurgery using an angularly independent silicon detector
title Quality assurance of Cyberknife robotic stereotactic radiosurgery using an angularly independent silicon detector
title_full Quality assurance of Cyberknife robotic stereotactic radiosurgery using an angularly independent silicon detector
title_fullStr Quality assurance of Cyberknife robotic stereotactic radiosurgery using an angularly independent silicon detector
title_full_unstemmed Quality assurance of Cyberknife robotic stereotactic radiosurgery using an angularly independent silicon detector
title_short Quality assurance of Cyberknife robotic stereotactic radiosurgery using an angularly independent silicon detector
title_sort quality assurance of cyberknife robotic stereotactic radiosurgery using an angularly independent silicon detector
topic Radiation Oncology Physics
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6333148/
https://www.ncbi.nlm.nih.gov/pubmed/30565856
http://dx.doi.org/10.1002/acm2.12496
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