Erratum: “Correction factors for ionization chamber dosimetry in CyberKnife: Machine‐specific, plan‐class, and clinical fields” [Med. Phys. 40, 011721 (10pp.) (2013)]

Gago-Arias, Araceli; Antolín, Elena; Fayos-Ferrer, Francisco; Simón, Rocío; González‐Castaño, Diego M.; Sharpe, Peter; Gómez, F.; Pardo-Montero, Juan

doi:10.1118/1.4801896

Medical Physics

2013

DOI: 10.1118/1.4801896

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Erratum: “Correction factors for ionization chamber dosimetry in CyberKnife: Machine‐specific, plan‐class, and clinical fields” [Med. Phys. 40, 011721 (10pp.) (2013)]

Araceli Gago-Arias

Elena Antolín

Francisco Fayos-Ferrer

et al.

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Reference dosimetry of modulated and dynamic photon beams

Bouchard

2020

Phys. Med. Biol.

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In the late 1980s, a new technique was proposed that would revolutionize radiotherapy. Now referred to as intensity-modulated radiotherapy, it is at the core of state-of-the-art photon beam delivery techniques, such as helical tomotherapy and volumetric modulated arc therapy. Despite over two decades of clinical application, there are still no established guidelines on the calibration of dynamic modulated photon beams. In 2008, the IAEA-AAPM work group on nonstandard photon beam dosimetry published a formalism to support the development of a new generation of protocols applicable to nonstandard beam reference dosimetry (Alfonso et al 2008 Med. Phys. 35 5179–86). The recent IAEA Code of Practice TRS-483 was published as a result of this initiative and addresses exclusively small static beams. But the plan-class specific reference calibration route proposed by Alfonso et al (2008 Med. Phys. 35 5179–86) is a change of paradigm that is yet to be implemented in radiotherapy clinics. The main goals of this paper are to provide a literature review on the dosimetry of nonstandard photon beams, including dynamic deliveries, and to discuss anticipated benefits and challenges in a future implementation of the IAEA-AAPM formalism on dynamic photon beams.

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Reference dosimetry of modulated and dynamic photon beams

Bouchard

2020

Phys. Med. Biol.

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Detector to detector corrections: A comprehensive experimental study of detector specific correction factors for beam output measurements for small radiotherapy beams

et al. 2014

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The results demonstrate how important it is for the appropriate corrections to be applied to give consistent and accurate measurements for a range of detectors in small beam geometry. The results further demonstrate that depending on the choice of detectors, there is a potential for large errors when effects such as volume averaging, perturbation and differences in material properties of detectors are not taken into account. As the commissioning of small fields for clinical treatment has to rely on accurate dose measurements, the authors recommend the use of detectors that require relatively little correction, such as unshielded diodes, diamond detectors or microchambers, and solid state detectors such as alanine, TLD, Al2O3:C, or scintillators.

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Erratum: “Correction factors for ionization chamber dosimetry in CyberKnife: Machine‐specific, plan‐class, and clinical fields” [Med. Phys. 40, 011721 (10pp.) (2013)]

Cited by 2 publications

References 1 publication

Reference dosimetry of modulated and dynamic photon beams

Reference dosimetry of modulated and dynamic photon beams

Detector to detector corrections: A comprehensive experimental study of detector specific correction factors for beam output measurements for small radiotherapy beams

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