Characterization of Plastic Scintillator Detector for In Vivo Dosimetry in Gynecologic Brachytherapy.

Fecha de publicación: 20/03/2024 Fecha Ahead of Print: 20/03/2024

Autores de IIS La Fe

José Pérez Calatayud

Autor
Facundo Ballester Pallares

Autor

Participantes ajenos a IIS La Fe

Herreros A
Abellana R
Neves J
Melo J
Moutinho L
Tarrats-Rosell J
Serrano-Rueda S
Tagliaferri L
Placidi E
Rovirosa A

Grupos

Investigación Clínica y Traslacional en Cáncer

Leader

José Gómez Codina
Unidad Mixta de Investigación en Radiofísica e Instrumentación nuclear en medicina

Leader

Facundo Ballester Pallares

Abstract

(1) Background: High dose gradients and manual steps in brachytherapy treatment procedures can lead to dose errors which make the use of in vivo dosimetry (IVD) highly recommended for verifying brachytherapy treatments. A new procedure was presented to obtain a calibration factor which allows fast and robust calibration of plastic scintillation detector (PSD) probes for the geometry of a compact phantom using Monte Carlo simulations. Additionally, characterization of PSD energy, angular, and temperature dependences was performed. (2) Methods: PENELOPE/PenEasy code was used to obtain the calibration factor. To characterize the energy dependence of the PSD, the signal was measured at different radial and transversal distances. The sensitivity to the angular position was characterized in axial and azimuthal planes. (3) Results: The calibration factor obtained allows for an absorbed dose to water determination in full scatter conditions from ionization measured in a mini polymethylmethacrylate (PMMA) phantom. The energy dependence of the PSD along the radial distances obtained was (2.3 ± 2.1)% (k = 1). The azimuthal angular dependence measured was (2.6 ± 3.4)% (k = 1). The PSD response decreased by (0.19 ± 0.02)%/°C with increasing detector probe temperature. (4) Conclusions: The energy, angular, and temperature dependence of a PSD is compatible with IVD.

Datos de la publicación

ISSN/ISSNe:: 2075-4426, 2075-4426
Tipo:: Article
Páginas:: -
DOI:: 10.3390/jpm14030321
Factor de Impacto:: 0,757 SCImago ℠
Cuartil:: Q2 SCImago ℠

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Métricas

Filiaciones

Herreros A:: Fonaments Clínics Department, University of Barcelona, 08036 Barcelona, Spain

Radiation Oncology Department, Hospital Clínic Universitari, 08036 Barcelona, Spain
Pérez-Calatayud J:: Radiation Oncology Department, Hospital Universitari i Politècnic La Fe, 46026 Valencia, Spain

Radiation Oncology Department, Hospital Clinica Benidorm, 3501 Alicante, Spain
Ballester F:: Instituto de Investigación. IRIMED, IIS-La Fe-Universitat de Valencia (UV), 46100 Burjassot, Spain
Abellana R:: Fonaments Clínics Department, University of Barcelona, 08036 Barcelona, Spain
Neves J:: NU-RISE S.A., PCI-Creative Science Park, 3830-352 Ilhavo, Portugal
Melo J:: NU-RISE S.A., PCI-Creative Science Park, 3830-352 Ilhavo, Portugal
Moutinho L:: NU-RISE S.A., PCI-Creative Science Park, 3830-352 Ilhavo, Portugal
Tarrats-Rosell J:: Radiation Oncology Department, Hospital Clínic Universitari, 08036 Barcelona, Spain
Serrano-Rueda S:: Radiation Oncology Department, Hospital Clínic Universitari, 08036 Barcelona, Spain
Tagliaferri L:: Dipartimento di Diagnostica per Immagini e Radioterapia Oncologica, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy
Placidi E:: Dipartimento di Diagnostica per Immagini e Radioterapia Oncologica, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy
Rovirosa A:: Fonaments Clínics Department, University of Barcelona, 08036 Barcelona, Spain

Radiation Oncology Department, Hospital Clínic Universitari, 08036 Barcelona, Spain

Gynecologic Cancer Unit, Hospital Clínic Universitari, 08036 Barcelona, Spain