X-ray spectra emitted by the electronic brachytherapy unit Papillon 50 measured with a CdTe spectrometer

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F25%3AN0000109" target="_blank" >RIV/00177016:_____/25:N0000109 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.5114/jcb.2025.154104" target="_blank" >https://doi.org/10.5114/jcb.2025.154104</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5114/jcb.2025.154104" target="_blank" >10.5114/jcb.2025.154104</a>

Jazyk výsledku

angličtina

Název v původním jazyce

X-ray spectra emitted by the electronic brachytherapy unit Papillon 50 measured with a CdTe spectrometer

Popis výsledku v původním jazyce

Purpose: The aim of this paper was to present the measured photon fluence spectra emitted by the electronic brachytherapy (eBT) unit Papillon 50. Material and methods: Spectra were collected with a compact CdTe spectrometer in air at a distance of 52 cm from the unit output window, for three different applicators attached to the unit and at several angles with respect to the beam axis. Results: The fluence spectra recorded for this device showed lower energy of the photon spectrum end-point than anticipated. The end-point energy was found to be (47.6 ±0.2) keV for the nominal high voltage bias of 50 kV set by the operator. Full-energy peaks in the spectra identified characteristic photons emitted by the rhenium anode, and by molybdenum and silver supposedly present in the inner coating of the applicators. An asymmetry in the half-value layer values of measured spectra was observed. Conclusions: The presented work provides a comprehensive dataset of photon fluence spectra for traceable dosimetry using the Papillon 50 eBT device, which is required, for example, for correcting the energy dependence of detectors or as an input for Monte Carlo calculations. Spectrometry and dose characterization studies are needed for eBT systems.

Název v anglickém jazyce

X-ray spectra emitted by the electronic brachytherapy unit Papillon 50 measured with a CdTe spectrometer

Popis výsledku anglicky

Purpose: The aim of this paper was to present the measured photon fluence spectra emitted by the electronic brachytherapy (eBT) unit Papillon 50. Material and methods: Spectra were collected with a compact CdTe spectrometer in air at a distance of 52 cm from the unit output window, for three different applicators attached to the unit and at several angles with respect to the beam axis. Results: The fluence spectra recorded for this device showed lower energy of the photon spectrum end-point than anticipated. The end-point energy was found to be (47.6 ±0.2) keV for the nominal high voltage bias of 50 kV set by the operator. Full-energy peaks in the spectra identified characteristic photons emitted by the rhenium anode, and by molybdenum and silver supposedly present in the inner coating of the applicators. An asymmetry in the half-value layer values of measured spectra was observed. Conclusions: The presented work provides a comprehensive dataset of photon fluence spectra for traceable dosimetry using the Papillon 50 eBT device, which is required, for example, for correcting the energy dependence of detectors or as an input for Monte Carlo calculations. Spectrometry and dose characterization studies are needed for eBT systems.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

<a href="/cs/project/8B19003" target="_blank" >8B19003: Primary standards and traceable measurement methods for X-ray emitting electronic brachytherapy devices</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Contemporary Brachytherapy

ISSN

1689-832X

e-ISSN

2081-2841

Svazek periodika

17

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

8

Strana od-do

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Kód UT WoS článku

001584231200004

EID výsledku v databázi Scopus

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