The Bebig Valencia-type skin applicators: Dosimetric study and implementation of a dosimetric hybrid technique

Anagnostopoulos, Georgios C.; Andrassy, M.; Baltas, Dimos

doi:10.1016/j.brachy.2017.04.243

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…1 Since inception of this TG, several new (some not released for clinical use yet) solid conical applicators have been developed. A new set of Valencia-type applicators available from BEBIG, 32 and a novel large-field (5 cm in diameter) solid conical applicator from Elekta 33 are not explicitly included in this report. However, the procedures and recommendations made (e.g., Section 5 Clinical considerations and Section 6.…”

Section: Description Of Applicatorsmentioning

confidence: 99%

Surface brachytherapy: Joint report of the AAPM and the GEC‐ESTRO Task Group No. 253

et al. 2020

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The surface brachytherapy Task Group report number 253 discusses the common treatment modalities and applicators typically used to treat lesions on the body surface. Details of commissioning and calibration of the applicators and systems are discussed and examples are given for a risk-based analysis approach to the quality assurance measures that are necessary to consider when establishing a surface brachytherapy program.

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Section: Description Of Applicatorsmentioning

confidence: 99%

Surface brachytherapy: Joint report of the AAPM and the GEC‐ESTRO Task Group No. 253

et al. 2020

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75Se - A promising alternative to 192Ir for potential use in the skin cancer brachytherapy: A Monte Carlo simulation study using FLUKA code

Hadadi

Ghanavati

2023

Applied Radiation and Isotopes

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Correction factors for ionization chamber measurements with the ‘Valencia’ and ‘large field Valencia’ brachytherapy applicators

et al. 2018

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Treatment of small skin lesions using HDR brachytherapy applicators is a widely used technique. The shielded applicators currently available in clinical practice are based on a tungsten-alloy cup that collimates the source-emitted radiation into a small region, hence protecting nearby tissues. The goal of this manuscript is to evaluate the correction factors required for dose measurements with a plane-parallel ionization chamber typically used in clinical brachytherapy for the 'Valencia' and 'large field Valencia' shielded applicators. Monte Carlo simulations have been performed using the PENELOPE-2014 system to determine the absorbed dose deposited in a water phantom and in the chamber active volume with a Type A uncertainty of the order of 0.1%. The average energies of the photon spectra arriving at the surface of the water phantom differ by approximately 10%, being 384 keV for the 'Valencia' and 343 keV for the 'large field Valencia'. The ionization chamber correction factors have been obtained for both applicators using three methods, their values depending on the applicator being considered. Using a depth-independent global chamber perturbation correction factor and no shift of the effective point of measurement yields depth-dose differences of up to 1% for the 'Valencia' applicator. Calculations using a depth-dependent global perturbation factor, or a shift of the effective point of measurement combined with a constant partial perturbation factor, result in differences of about 0.1% for both applicators. The results emphasize the relevance of carrying out detailed Monte Carlo studies for each shielded brachytherapy applicator and ionization chamber.

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The Bebig Valencia-type skin applicators: Dosimetric study and implementation of a dosimetric hybrid technique

Cited by 3 publications

References 21 publications

Surface brachytherapy: Joint report of the AAPM and the GEC‐ESTRO Task Group No. 253

Surface brachytherapy: Joint report of the AAPM and the GEC‐ESTRO Task Group No. 253

75Se - A promising alternative to 192Ir for potential use in the skin cancer brachytherapy: A Monte Carlo simulation study using FLUKA code

Correction factors for ionization chamber measurements with the ‘Valencia’ and ‘large field Valencia’ brachytherapy applicators

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