Proton therapy dosimetry by using silica glass optical fiber microprobes

Arash Darafsheh, Reza Taleei, Alireza Kassaee, Jarod C. Finlay

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

We investigated the feasibility of proton therapy dosimetry by using bare silica glass optical fibers. A silica glass fiber, with 400μm core diameter, was placed in proton radiation fields generated by a proton therapy cyclotron and simultaneously luminescence spectroscopy was performed to analyze the emission spectrum of the fiber tip. In order to measure the radiation absorbed dose at various depths in tissue-mimicking media, the fiber tip was embedded in a plastic slab and additional slabs of phantom were added sequentially. The spectrum of the irradiated fiber over the 400-700 nm sensitivity range of the spectrometer shows two distinct peaks at 460 and 650 nm, whose spectral shape is different from that of erenkov radiation. We found that the emission peak at 650 nm shows correlation with the radiation absorbed dose measured by a standard ion chamber device indicating the feasibility of proton dose measurement by using a bare silica fiber.

Original languageEnglish
Title of host publicationOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVII
EditorsIsrael Gannot, Israel Gannot
PublisherSPIE
ISBN (Electronic)9781510605572
DOIs
StatePublished - 2017
EventOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVII - San Francisco, United States
Duration: Jan 28 2017Jan 29 2017

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume10058
ISSN (Print)1605-7422

Conference

ConferenceOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVII
Country/TerritoryUnited States
CitySan Francisco
Period01/28/1701/29/17

Keywords

  • Cerenkov radiation
  • Dosimetry
  • Ionizing radiation
  • Optical fiber
  • Proton therapy
  • Silica
  • Spectroscopy

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