Investigation and analysis of ferrous sulfate polyvinyl alcohol (PVA) gel dosimeter
(2002) In Physics in Medicine and Biology 47(23). p.4233-4246- Abstract
- Ferrous sulfate (Fe(SO4)2) PVA gels were investigated for a range of absorbed doses up to 20 Gy using both magnetic resonance imaging (MRI) and spectrophotometry to determine R1 and optical density (OD) dose responses and G values. It was found that R1- and OD-dose sensitivities increased with O2 saturation or by the introduction of a freeze-thaw cycle during preparation of the PVA gel. The storage temperature of the Fe(SO4)2 PVA gel at -18 degrees C increased R1-dose sensitivity above that of gels stored at 5 degrees C. The addition of sucrose to the formulation was found to result in the largest increase in both R1- and OD-dose sensitivities. Fe(SO4)2 PVA gel with and without the addition of xylenol orange was demonstrated to have a G... (More)
- Ferrous sulfate (Fe(SO4)2) PVA gels were investigated for a range of absorbed doses up to 20 Gy using both magnetic resonance imaging (MRI) and spectrophotometry to determine R1 and optical density (OD) dose responses and G values. It was found that R1- and OD-dose sensitivities increased with O2 saturation or by the introduction of a freeze-thaw cycle during preparation of the PVA gel. The storage temperature of the Fe(SO4)2 PVA gel at -18 degrees C increased R1-dose sensitivity above that of gels stored at 5 degrees C. The addition of sucrose to the formulation was found to result in the largest increase in both R1- and OD-dose sensitivities. Fe(SO4)2 PVA gel with and without the addition of xylenol orange was demonstrated to have a G value of approximately 20 ions/100 eV and with sucrose approximately 24 ions/100 eV. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1297442
- author
- Hill, Brendan ; Bäck, Sven LU ; Lepage, Martin ; Simpson, John ; Healy, Brendan and Baldock, Clive
- organization
- publishing date
- 2002
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physics in Medicine and Biology
- volume
- 47
- issue
- 23
- pages
- 4233 - 4246
- publisher
- IOP Publishing
- external identifiers
-
- wos:000180279500010
- scopus:0346736700
- ISSN
- 1361-6560
- DOI
- 10.1088/0031-9155/47/23/309
- language
- English
- LU publication?
- yes
- id
- dc8da7fd-e989-458e-bb5d-2ba6c3761cc2 (old id 1297442)
- date added to LUP
- 2016-04-01 11:33:47
- date last changed
- 2022-05-06 06:04:25
@article{dc8da7fd-e989-458e-bb5d-2ba6c3761cc2,
abstract = {{Ferrous sulfate (Fe(SO4)2) PVA gels were investigated for a range of absorbed doses up to 20 Gy using both magnetic resonance imaging (MRI) and spectrophotometry to determine R1 and optical density (OD) dose responses and G values. It was found that R1- and OD-dose sensitivities increased with O2 saturation or by the introduction of a freeze-thaw cycle during preparation of the PVA gel. The storage temperature of the Fe(SO4)2 PVA gel at -18 degrees C increased R1-dose sensitivity above that of gels stored at 5 degrees C. The addition of sucrose to the formulation was found to result in the largest increase in both R1- and OD-dose sensitivities. Fe(SO4)2 PVA gel with and without the addition of xylenol orange was demonstrated to have a G value of approximately 20 ions/100 eV and with sucrose approximately 24 ions/100 eV.}},
author = {{Hill, Brendan and Bäck, Sven and Lepage, Martin and Simpson, John and Healy, Brendan and Baldock, Clive}},
issn = {{1361-6560}},
language = {{eng}},
number = {{23}},
pages = {{4233--4246}},
publisher = {{IOP Publishing}},
series = {{Physics in Medicine and Biology}},
title = {{Investigation and analysis of ferrous sulfate polyvinyl alcohol (PVA) gel dosimeter}},
url = {{http://dx.doi.org/10.1088/0031-9155/47/23/309}},
doi = {{10.1088/0031-9155/47/23/309}},
volume = {{47}},
year = {{2002}},
}