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Title: Silicon-based three-dimensional microstructures for radiation dosimetry in hadrontherapy

Abstract

In this work, we propose a solid-state-detector for use in radiation microdosimetry. This device improves the performance of existing dosimeters using customized 3D-cylindrical microstructures etched inside silicon. The microdosimeter consists of an array of micro-sensors that have 3D-cylindrical electrodes of 15 μm diameter and a depth of 5 μm within a silicon membrane, resulting in a well-defined micrometric radiation sensitive volume. These microdetectors have been characterized using an {sup 241}Am source to assess their performance as radiation detectors in a high-LET environment. This letter demonstrates the capability of this microdetector to be used to measure dose and LET in hadrontherapy centers for treatment plan verification as part of their patient-specific quality control program.

Authors:
;  [1]; ; ; ; ;  [2];  [3];  [4]
  1. Department of Radiation Oncology, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States)
  2. Centro Nacional de Microelectrónica (IMB-CNM, CSIC), Bellaterra 08193 (Spain)
  3. Departamento de Física Atómica, Molecular y Nuclear, University of Sevilla, 41080 Sevilla (Spain)
  4. Departamento de Física de Partículas, Universidad de Santiago de Compostela, Santiago de Compostela 15782 (Spain)
Publication Date:
OSTI Identifier:
22483203
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 107; Journal Issue: 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; AMERICIUM 241; DEPTH; DOSEMETERS; MICRODOSIMETRY; MICROSTRUCTURE; PERFORMANCE; QUALITY CONTROL; RADIATION DETECTORS; RADIATION DOSES; SILICON; THREE-DIMENSIONAL LATTICES

Citation Formats

Guardiola, C., E-mail: GuardioC@uphs.upenn.edu, Solberg, T., Carabe, A., Quirion, D., Pellegrini, G., Fleta, C., Esteban, S., Lozano, M., Cortés-Giraldo, M. A., Gómez, F., and Grupo de Imagen Molecular, Instituto de Investigaciones Sanitarias, Santiago de Compostela 15706. Silicon-based three-dimensional microstructures for radiation dosimetry in hadrontherapy. United States: N. p., 2015. Web. doi:10.1063/1.4926962.
Guardiola, C., E-mail: GuardioC@uphs.upenn.edu, Solberg, T., Carabe, A., Quirion, D., Pellegrini, G., Fleta, C., Esteban, S., Lozano, M., Cortés-Giraldo, M. A., Gómez, F., & Grupo de Imagen Molecular, Instituto de Investigaciones Sanitarias, Santiago de Compostela 15706. Silicon-based three-dimensional microstructures for radiation dosimetry in hadrontherapy. United States. https://doi.org/10.1063/1.4926962
Guardiola, C., E-mail: GuardioC@uphs.upenn.edu, Solberg, T., Carabe, A., Quirion, D., Pellegrini, G., Fleta, C., Esteban, S., Lozano, M., Cortés-Giraldo, M. A., Gómez, F., and Grupo de Imagen Molecular, Instituto de Investigaciones Sanitarias, Santiago de Compostela 15706. 2015. "Silicon-based three-dimensional microstructures for radiation dosimetry in hadrontherapy". United States. https://doi.org/10.1063/1.4926962.
@article{osti_22483203,
title = {Silicon-based three-dimensional microstructures for radiation dosimetry in hadrontherapy},
author = {Guardiola, C., E-mail: GuardioC@uphs.upenn.edu and Solberg, T. and Carabe, A. and Quirion, D. and Pellegrini, G. and Fleta, C. and Esteban, S. and Lozano, M. and Cortés-Giraldo, M. A. and Gómez, F. and Grupo de Imagen Molecular, Instituto de Investigaciones Sanitarias, Santiago de Compostela 15706},
abstractNote = {In this work, we propose a solid-state-detector for use in radiation microdosimetry. This device improves the performance of existing dosimeters using customized 3D-cylindrical microstructures etched inside silicon. The microdosimeter consists of an array of micro-sensors that have 3D-cylindrical electrodes of 15 μm diameter and a depth of 5 μm within a silicon membrane, resulting in a well-defined micrometric radiation sensitive volume. These microdetectors have been characterized using an {sup 241}Am source to assess their performance as radiation detectors in a high-LET environment. This letter demonstrates the capability of this microdetector to be used to measure dose and LET in hadrontherapy centers for treatment plan verification as part of their patient-specific quality control program.},
doi = {10.1063/1.4926962},
url = {https://www.osti.gov/biblio/22483203}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 2,
volume = 107,
place = {United States},
year = {Mon Jul 13 00:00:00 EDT 2015},
month = {Mon Jul 13 00:00:00 EDT 2015}
}