A comparison of BCF-12 organic scintillators and Al2O3:C crystals for real-time medical dosimetry
Publication: Research - peer-review › Conference article – Annual report year: 2008
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A comparison of BCF-12 organic scintillators and Al2O3:C crystals for real-time medical dosimetry. / Beierholm, Anders Ravnsborg; Andersen, Claus Erik; Lindvold, Lars; Kjær-Kristoffersen, Flemming; Medin, Joakim.
In: Radiation Measurements, Vol. 43, No. 2-6, 2008, p. 898-903.Publication: Research - peer-review › Conference article – Annual report year: 2008
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T1 - A comparison of BCF-12 organic scintillators and Al2O3:C crystals for real-time medical dosimetry
A1 - Beierholm,Anders Ravnsborg
A1 - Andersen,Claus Erik
A1 - Lindvold,Lars
A1 - Kjær-Kristoffersen,Flemming
A1 - Medin,Joakim
AU - Beierholm,Anders Ravnsborg
AU - Andersen,Claus Erik
AU - Lindvold,Lars
AU - Kjær-Kristoffersen,Flemming
AU - Medin,Joakim
PB - Pergamon
PY - 2008
Y1 - 2008
N2 - Radioluminescence (RL) from aluminium oxide (Al2O3:C) crystals and organic scintillators such as the blue-emitting BCF-12 can be used for precise real-time dose rate measurements during radiation therapy of cancer patients. Attaching the dosimeters to thin light-guiding fiber cables enables in vivo use. The light signal is detected by a photomultiplier tube (PNIT). Unfortunately Cerenkov light and fluorescence are also generated in the fiber cable itself during irradiation, and this so-called stem effect can be significant compared with the dosimeter signal. In the case of Al2O3:C, this problem can be circumvented for pulsed beams due to the long life-time of the main luminescence center. In contrast, chromatic removal seems to be the most effective method for organic scintillators, but is found to yield some experimental complexities. In this paper, we report on dose rate measurements using BCF-12 as well as Al2O3:C. We focus our attention on comparing the efficiency of stem effect removal of the two materials, as well as the accuracy of the resulting depth-dose curves. (c) 2007 Elsevier Ltd. All rights reserved.
AB - Radioluminescence (RL) from aluminium oxide (Al2O3:C) crystals and organic scintillators such as the blue-emitting BCF-12 can be used for precise real-time dose rate measurements during radiation therapy of cancer patients. Attaching the dosimeters to thin light-guiding fiber cables enables in vivo use. The light signal is detected by a photomultiplier tube (PNIT). Unfortunately Cerenkov light and fluorescence are also generated in the fiber cable itself during irradiation, and this so-called stem effect can be significant compared with the dosimeter signal. In the case of Al2O3:C, this problem can be circumvented for pulsed beams due to the long life-time of the main luminescence center. In contrast, chromatic removal seems to be the most effective method for organic scintillators, but is found to yield some experimental complexities. In this paper, we report on dose rate measurements using BCF-12 as well as Al2O3:C. We focus our attention on comparing the efficiency of stem effect removal of the two materials, as well as the accuracy of the resulting depth-dose curves. (c) 2007 Elsevier Ltd. All rights reserved.
KW - Diagnostik og behandling
U2 - 10.1016/j.radmeas.2007.12.032
DO - 10.1016/j.radmeas.2007.12.032
JO - Radiation Measurements
JF - Radiation Measurements
SN - 1350-4487
IS - 2-6
VL - 43
SP - 898
EP - 903
ER -