Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/192208
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- Title
- The "push-pull" dosimeter : when two pigments are better than one
- Related
- International Conference on 3D Radiation Dosimetry (6th : 2010) (22 - 26 August 2010 : Hilton Head Island, SC)
- Related
- Journal of physics : conference series, Vol. 250, No. 1, p.012010-1-012010-5
- DOI
- 10.1088/1742-6596/250/1/012010
- Publisher
- London : Institute of Physics
- Date
- 2010
- Author/Creator
- Bosi, Stephen G
- Author/Creator
- Baldock, Clive
- Author/Creator
- Smee, Robert
- Description
- A new kind of gel dosimeter (the "push-pull" dosimeter) is proposed which would contain two spectrally complementary pigments, one which darkens with increasing dose and another which bleaches. The bleaching pigment would be optimised for high sensitivity and the darkening pigment for low sensitivity. By employing dual pigments optimised independently, the usual requisite compromises between sensitivity at low dose and accuracy at high dose would be relaxed. Such a gel, after exposure would be read using two successive optical CT scans employing two different scan wavelengths. The use of dual pigments could also reduce the occurrence of regions of high optical attenuation which generate artefacts in optical CT. This paper also presents results of simulations of the behaviour of such a gel when scanned using optical cone beam CT.
- Description
- 5 page(s)
- Resource Type
- conference paper
- Organisation
- Macquarie University. Faculty of Science
- Identifier
- http://hdl.handle.net/1959.14/192208
- Identifier
- ISSN:1742-6588
- Identifier
- mq_res-ext-2-s2.0-78650555067
- Language
- eng
- Reviewed
