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Gated fiber-optic-coupled detector for in vivo real-time radiation dosimetry

Authors :
Justus, Brian L.
Falkenstein, Paul
Huston, Alan L.
Plazas, Maria C.
Ning, Holly
Miller, Robert W.
Source :
Applied Optics. March 10, 2004, Vol. 43 Issue 8, p1663, 6 p.
Publication Year :
2004

Abstract

Gated detection of the output of a fiber-optic-coupled radiation dosimeter effectively eliminated the direct contribution of Cerenkov radiation to the signal. The radiation source was an external beam radiotherapy machine that provided pulses of 6-MeV x rays. Gated detection was used to discriminate the signal collected during the radiation pulses, including Cerenkov interference, from the signal collected between the radiation pulses due only to phosphorescence from the [Cu.sup.1+] -doped glass detector. Gated detection of the phosphorescence of the [Cu.sup.1+] -doped glass provided dose measurements that were linear with the absorbed dose and that were accurate for all field sizes studied. OCIS codes: 060.2370, 170.3890, 040.7480.

Details

Language :
English
ISSN :
1559128X
Volume :
43
Issue :
8
Database :
Gale General OneFile
Journal :
Applied Optics
Publication Type :
Academic Journal
Accession number :
edsgcl.114328114