Performance characteristics of a gated fiber-optic-coupled dosimeter in high-energy pulsed photon radiation dosimetry

James A. Tanyi; Shane P. Krafft; Toshihide Ushino; Alan L. Huston; Brian L. Justus

doi:10.1016/j.apradiso.2009.10.042

Performance characteristics of a gated fiber-optic-coupled dosimeter in high-energy pulsed photon radiation dosimetry

James A. Tanyi, Shane P. Krafft, Toshihide Ushino, Alan L. Huston, Brian L. Justus

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Fiber-optic-coupled dosimeters (FOCDs) are a new class of in vivo dosimetry systems that are finding increased clinical applications. Utility of FOCDs has been limited in dosimetric applications due Cerenkov-ray signal contamination. The current study reports on the characterization of a novel FOCD, with a gated detection system for the discrimination and effective elimination of the direct contribution of Cerenkov radiation, for use in the radiotherapeutic realm. System reproducibility, linearity and output dependence on dose rate, energy, field size, and temperature response were characterized for 6, 10, and 15 MV photon energies. The system exhibited a linear response to absorbed dose ranging from 1 to 2400 cGy and showed little dependence to dose rate variations. Overall system reproducibility was 0.52% with no field-geometry and temperature dependence.

Original language	English (US)
Pages (from-to)	364-369
Number of pages	6
Journal	Applied Radiation and Isotopes
Volume	68
Issue number	2
DOIs	https://doi.org/10.1016/j.apradiso.2009.10.042
State	Published - Feb 2010
Externally published	Yes

Keywords

Gated fiber-optics
In vivo dosimetry
Pulsed photon beam
Real-time dosimetry

ASJC Scopus subject areas

Radiation

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10.1016/j.apradiso.2009.10.042

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title = "Performance characteristics of a gated fiber-optic-coupled dosimeter in high-energy pulsed photon radiation dosimetry",

abstract = "Fiber-optic-coupled dosimeters (FOCDs) are a new class of in vivo dosimetry systems that are finding increased clinical applications. Utility of FOCDs has been limited in dosimetric applications due Cerenkov-ray signal contamination. The current study reports on the characterization of a novel FOCD, with a gated detection system for the discrimination and effective elimination of the direct contribution of Cerenkov radiation, for use in the radiotherapeutic realm. System reproducibility, linearity and output dependence on dose rate, energy, field size, and temperature response were characterized for 6, 10, and 15 MV photon energies. The system exhibited a linear response to absorbed dose ranging from 1 to 2400 cGy and showed little dependence to dose rate variations. Overall system reproducibility was 0.52% with no field-geometry and temperature dependence.",

keywords = "Gated fiber-optics, In vivo dosimetry, Pulsed photon beam, Real-time dosimetry",

author = "Tanyi, {James A.} and Krafft, {Shane P.} and Toshihide Ushino and Huston, {Alan L.} and Justus, {Brian L.}",

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doi = "10.1016/j.apradiso.2009.10.042",

language = "English (US)",

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T1 - Performance characteristics of a gated fiber-optic-coupled dosimeter in high-energy pulsed photon radiation dosimetry

AU - Tanyi, James A.

AU - Krafft, Shane P.

AU - Ushino, Toshihide

AU - Huston, Alan L.

AU - Justus, Brian L.

PY - 2010/2

Y1 - 2010/2

N2 - Fiber-optic-coupled dosimeters (FOCDs) are a new class of in vivo dosimetry systems that are finding increased clinical applications. Utility of FOCDs has been limited in dosimetric applications due Cerenkov-ray signal contamination. The current study reports on the characterization of a novel FOCD, with a gated detection system for the discrimination and effective elimination of the direct contribution of Cerenkov radiation, for use in the radiotherapeutic realm. System reproducibility, linearity and output dependence on dose rate, energy, field size, and temperature response were characterized for 6, 10, and 15 MV photon energies. The system exhibited a linear response to absorbed dose ranging from 1 to 2400 cGy and showed little dependence to dose rate variations. Overall system reproducibility was 0.52% with no field-geometry and temperature dependence.

AB - Fiber-optic-coupled dosimeters (FOCDs) are a new class of in vivo dosimetry systems that are finding increased clinical applications. Utility of FOCDs has been limited in dosimetric applications due Cerenkov-ray signal contamination. The current study reports on the characterization of a novel FOCD, with a gated detection system for the discrimination and effective elimination of the direct contribution of Cerenkov radiation, for use in the radiotherapeutic realm. System reproducibility, linearity and output dependence on dose rate, energy, field size, and temperature response were characterized for 6, 10, and 15 MV photon energies. The system exhibited a linear response to absorbed dose ranging from 1 to 2400 cGy and showed little dependence to dose rate variations. Overall system reproducibility was 0.52% with no field-geometry and temperature dependence.

KW - Gated fiber-optics

KW - In vivo dosimetry

KW - Pulsed photon beam

KW - Real-time dosimetry

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Performance characteristics of a gated fiber-optic-coupled dosimeter in high-energy pulsed photon radiation dosimetry

Abstract

Keywords

ASJC Scopus subject areas

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