Abstract
Full text: We have developed an innovative on-line MOSFET readout system for use in the quality assurance of radiation treatment beams. Recently the system has found application in areas where excellent spatial resolution is also a requirement in the quality assurance process, for example IMRT, and microbeam radiation therapy. The excellent spatial resolution is achieved by using a quadruple RADFET{sup TM} chip in 'edge on' mode. In developing this approach we have found that the system can be utilised to determine any error in the beam profile measurements due to misalignment of RADFET with respect to the radiation beam or microbeam. Using this approach will ensure that the excellent spatial resolution of the RADFET used in 'edge-on' mode is fully utilised. In this work we report on dosimetry measurements performed at the microbeam radiation therapy beamline located at the European Synchrotron Radiation Facility. The synchrotron planar array microbeam with size 10-30 {mu}m and pitch {approx}200 {mu}m has found an important application in microbeam radiation therapy (MRT) of brain tumours in infants for whom other kinds of radiotherapy are inadequate and/or unsafe. The radiation damage from an array of parallel microbeams correlates strongly with the range of peak-valley dose ratios (PVDR),
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Rozenfeld, A;
Lerch, M;
[1]
Brauer-Krisch, E;
Bravin, A;
Di Michiel, M
[2]
- University of Wollongong, NSW (Australia). Center for Medical Radiation Physics
- European Synchrotron Radiation Facility, Grenoble, (France)
Citation Formats
Rozenfeld, A, Lerch, M, Brauer-Krisch, E, Bravin, A, and Di Michiel, M.
MOSFET dosimetry of the radiation therapy microbeams at the European synchrotron radiation facility.
Australia: N. p.,
2002.
Web.
Rozenfeld, A, Lerch, M, Brauer-Krisch, E, Bravin, A, & Di Michiel, M.
MOSFET dosimetry of the radiation therapy microbeams at the European synchrotron radiation facility.
Australia.
Rozenfeld, A, Lerch, M, Brauer-Krisch, E, Bravin, A, and Di Michiel, M.
2002.
"MOSFET dosimetry of the radiation therapy microbeams at the European synchrotron radiation facility."
Australia.
@misc{etde_20619867,
title = {MOSFET dosimetry of the radiation therapy microbeams at the European synchrotron radiation facility}
author = {Rozenfeld, A, Lerch, M, Brauer-Krisch, E, Bravin, A, and Di Michiel, M}
abstractNote = {Full text: We have developed an innovative on-line MOSFET readout system for use in the quality assurance of radiation treatment beams. Recently the system has found application in areas where excellent spatial resolution is also a requirement in the quality assurance process, for example IMRT, and microbeam radiation therapy. The excellent spatial resolution is achieved by using a quadruple RADFET{sup TM} chip in 'edge on' mode. In developing this approach we have found that the system can be utilised to determine any error in the beam profile measurements due to misalignment of RADFET with respect to the radiation beam or microbeam. Using this approach will ensure that the excellent spatial resolution of the RADFET used in 'edge-on' mode is fully utilised. In this work we report on dosimetry measurements performed at the microbeam radiation therapy beamline located at the European Synchrotron Radiation Facility. The synchrotron planar array microbeam with size 10-30 {mu}m and pitch {approx}200 {mu}m has found an important application in microbeam radiation therapy (MRT) of brain tumours in infants for whom other kinds of radiotherapy are inadequate and/or unsafe. The radiation damage from an array of parallel microbeams correlates strongly with the range of peak-valley dose ratios (PVDR), ie, the range of the ratio of the absorbed dose to tissue directly in line with the mid-plane of the microbeam to that in the mid-plane between adjacent microbeams. Novel physical dosimetry of the microbeams using the online MOSFET reader system will be presented. Comparison of the experimental results with both GaF film measurements and Monte Carlo computer-simulated dosimetry are described here for selected points in the peak and valley regions of a microbeam-irradiated tissue phantom.}
place = {Australia}
year = {2002}
month = {Jul}
}
title = {MOSFET dosimetry of the radiation therapy microbeams at the European synchrotron radiation facility}
author = {Rozenfeld, A, Lerch, M, Brauer-Krisch, E, Bravin, A, and Di Michiel, M}
abstractNote = {Full text: We have developed an innovative on-line MOSFET readout system for use in the quality assurance of radiation treatment beams. Recently the system has found application in areas where excellent spatial resolution is also a requirement in the quality assurance process, for example IMRT, and microbeam radiation therapy. The excellent spatial resolution is achieved by using a quadruple RADFET{sup TM} chip in 'edge on' mode. In developing this approach we have found that the system can be utilised to determine any error in the beam profile measurements due to misalignment of RADFET with respect to the radiation beam or microbeam. Using this approach will ensure that the excellent spatial resolution of the RADFET used in 'edge-on' mode is fully utilised. In this work we report on dosimetry measurements performed at the microbeam radiation therapy beamline located at the European Synchrotron Radiation Facility. The synchrotron planar array microbeam with size 10-30 {mu}m and pitch {approx}200 {mu}m has found an important application in microbeam radiation therapy (MRT) of brain tumours in infants for whom other kinds of radiotherapy are inadequate and/or unsafe. The radiation damage from an array of parallel microbeams correlates strongly with the range of peak-valley dose ratios (PVDR), ie, the range of the ratio of the absorbed dose to tissue directly in line with the mid-plane of the microbeam to that in the mid-plane between adjacent microbeams. Novel physical dosimetry of the microbeams using the online MOSFET reader system will be presented. Comparison of the experimental results with both GaF film measurements and Monte Carlo computer-simulated dosimetry are described here for selected points in the peak and valley regions of a microbeam-irradiated tissue phantom.}
place = {Australia}
year = {2002}
month = {Jul}
}