Bosi 2010.pdf (977.93 kB)
The "push-pull" dosimeter: When two pigments are better than one
journal contribution
posted on 2023-05-19, 04:13 authored by Bosi, SG, Baldock, C, Smee, RA 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.
History
Publication title
Journal of Physics: Conference SeriesVolume
250Pagination
1-5ISSN
1742-6588Department/School
Research ServicesPublisher
Institute of Physics Publishing LtdPlace of publication
United KingdomRights statement
Copyright 2010 IOP Publishing. Published under licence in Journal of Physics: Conference Series by IOP Publishing Ltd.Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.Repository Status
- Open