Characterization of a Ce3+ doped SiO2 optical dosimeter for dose measurements in HDR brachytherapy

Mauro Carrara, Claudia Cavatorta, Marta Borroni, Chiara Tenconi, Annamaria Cerrotta, Carlo Fallai, Grazia Gambarini, Anna Vedda, Emanuele Pignoli

Research output: Contribution to journalArticle

Abstract

Aim of this work was to study the application of a new miniaturized Ce 3+ doped SiO2 scintillation detector to in vivo dosimetry in high dose rate brachytherapy. Energy, dose-rate, temperature and angular dependences of the detector response to 192Ir HDR brachytherapy fields were investigated, as well as sensitivity reproducibility and linearity. To this aim, two ad hoc phantoms were designed and developed to perform measurements in water. Intra-session reproducibility resulted to be very high, however inter-session reproducibility showed too high statistical variation. Detector response resulted to increase linearly with dose (R2 = 0.997), with no evidence of energy and dose-rate dependence. Sensitivity resulted to increase linearly with temperature (R2 = 0.995), with a 0.2% increase each C. Finally, no significant angular dependence for the source moving around a circle in the azimuthal plane centered at the scintillator was observed. The obtained results show that the proposed detector is suitable for in vivo real-time dosimetry in high dose rate brachytherapy.

Original languageEnglish
Pages (from-to)312-315
Number of pages4
JournalRadiation Measurements
Volume56
DOIs
Publication statusPublished - 2013

Fingerprint

Dosimeters
Dosimetry
dosimeters
dosage
detectors
Detectors
Scintillation counters
sensitivity
Phosphors
scintillation counters
scintillation
linearity
Temperature
temperature dependence
energy
water
Water
temperature

Keywords

  • Brachytherapy
  • In vivo dosimetry
  • Scintillation detector

ASJC Scopus subject areas

  • Radiation
  • Instrumentation

Cite this

Characterization of a Ce3+ doped SiO2 optical dosimeter for dose measurements in HDR brachytherapy. / Carrara, Mauro; Cavatorta, Claudia; Borroni, Marta; Tenconi, Chiara; Cerrotta, Annamaria; Fallai, Carlo; Gambarini, Grazia; Vedda, Anna; Pignoli, Emanuele.

In: Radiation Measurements, Vol. 56, 2013, p. 312-315.

Research output: Contribution to journalArticle

Carrara, Mauro ; Cavatorta, Claudia ; Borroni, Marta ; Tenconi, Chiara ; Cerrotta, Annamaria ; Fallai, Carlo ; Gambarini, Grazia ; Vedda, Anna ; Pignoli, Emanuele. / Characterization of a Ce3+ doped SiO2 optical dosimeter for dose measurements in HDR brachytherapy. In: Radiation Measurements. 2013 ; Vol. 56. pp. 312-315.
@article{b785d4a5f506475ebbde3b059a26610a,
title = "Characterization of a Ce3+ doped SiO2 optical dosimeter for dose measurements in HDR brachytherapy",
abstract = "Aim of this work was to study the application of a new miniaturized Ce 3+ doped SiO2 scintillation detector to in vivo dosimetry in high dose rate brachytherapy. Energy, dose-rate, temperature and angular dependences of the detector response to 192Ir HDR brachytherapy fields were investigated, as well as sensitivity reproducibility and linearity. To this aim, two ad hoc phantoms were designed and developed to perform measurements in water. Intra-session reproducibility resulted to be very high, however inter-session reproducibility showed too high statistical variation. Detector response resulted to increase linearly with dose (R2 = 0.997), with no evidence of energy and dose-rate dependence. Sensitivity resulted to increase linearly with temperature (R2 = 0.995), with a 0.2{\%} increase each C. Finally, no significant angular dependence for the source moving around a circle in the azimuthal plane centered at the scintillator was observed. The obtained results show that the proposed detector is suitable for in vivo real-time dosimetry in high dose rate brachytherapy.",
keywords = "Brachytherapy, In vivo dosimetry, Scintillation detector",
author = "Mauro Carrara and Claudia Cavatorta and Marta Borroni and Chiara Tenconi and Annamaria Cerrotta and Carlo Fallai and Grazia Gambarini and Anna Vedda and Emanuele Pignoli",
year = "2013",
doi = "10.1016/j.radmeas.2013.02.023",
language = "English",
volume = "56",
pages = "312--315",
journal = "Radiation Measurements",
issn = "1350-4487",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Characterization of a Ce3+ doped SiO2 optical dosimeter for dose measurements in HDR brachytherapy

AU - Carrara, Mauro

AU - Cavatorta, Claudia

AU - Borroni, Marta

AU - Tenconi, Chiara

AU - Cerrotta, Annamaria

AU - Fallai, Carlo

AU - Gambarini, Grazia

AU - Vedda, Anna

AU - Pignoli, Emanuele

PY - 2013

Y1 - 2013

N2 - Aim of this work was to study the application of a new miniaturized Ce 3+ doped SiO2 scintillation detector to in vivo dosimetry in high dose rate brachytherapy. Energy, dose-rate, temperature and angular dependences of the detector response to 192Ir HDR brachytherapy fields were investigated, as well as sensitivity reproducibility and linearity. To this aim, two ad hoc phantoms were designed and developed to perform measurements in water. Intra-session reproducibility resulted to be very high, however inter-session reproducibility showed too high statistical variation. Detector response resulted to increase linearly with dose (R2 = 0.997), with no evidence of energy and dose-rate dependence. Sensitivity resulted to increase linearly with temperature (R2 = 0.995), with a 0.2% increase each C. Finally, no significant angular dependence for the source moving around a circle in the azimuthal plane centered at the scintillator was observed. The obtained results show that the proposed detector is suitable for in vivo real-time dosimetry in high dose rate brachytherapy.

AB - Aim of this work was to study the application of a new miniaturized Ce 3+ doped SiO2 scintillation detector to in vivo dosimetry in high dose rate brachytherapy. Energy, dose-rate, temperature and angular dependences of the detector response to 192Ir HDR brachytherapy fields were investigated, as well as sensitivity reproducibility and linearity. To this aim, two ad hoc phantoms were designed and developed to perform measurements in water. Intra-session reproducibility resulted to be very high, however inter-session reproducibility showed too high statistical variation. Detector response resulted to increase linearly with dose (R2 = 0.997), with no evidence of energy and dose-rate dependence. Sensitivity resulted to increase linearly with temperature (R2 = 0.995), with a 0.2% increase each C. Finally, no significant angular dependence for the source moving around a circle in the azimuthal plane centered at the scintillator was observed. The obtained results show that the proposed detector is suitable for in vivo real-time dosimetry in high dose rate brachytherapy.

KW - Brachytherapy

KW - In vivo dosimetry

KW - Scintillation detector

UR - http://www.scopus.com/inward/record.url?scp=84884905213&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84884905213&partnerID=8YFLogxK

U2 - 10.1016/j.radmeas.2013.02.023

DO - 10.1016/j.radmeas.2013.02.023

M3 - Article

AN - SCOPUS:84884905213

VL - 56

SP - 312

EP - 315

JO - Radiation Measurements

JF - Radiation Measurements

SN - 1350-4487

ER -