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High-resolution mapping of 1D and 2D dose distributions using X-band electron paramagnetic resonance imaging
Linköping University, Department of Medical and Health Sciences, Division of Radiological Sciences. Linköping University, Faculty of Health Sciences.
Linköping University, Department of Medical and Health Sciences, Division of Radiological Sciences. Linköping University, Faculty of Health Sciences.
Linköping University, Center for Medical Image Science and Visualization (CMIV). Linköping University, Department of Medical and Health Sciences, Division of Radiological Sciences. Linköping University, Faculty of Health Sciences.
Linköping University, Department of Medical and Health Sciences, Division of Radiological Sciences. Linköping University, Faculty of Health Sciences.
2014 (English)In: Radiation Protection Dosimetry, ISSN 0144-8420, E-ISSN 1742-3406, Vol. 159, no 1-4, 182-187 p.Article in journal (Refereed) Published
Abstract [en]

Electron paramagnetic resonance imaging (EPRI) was performed to visualise 2D dose distributions of homogenously irradiated potassium dithionate tablets and to demonstrate determination of 1D dose profiles along the height of the tablets. Mathematical correction was applied for each relative dose profile in order to take into account the inhomogeneous response of the resonator using X-band EPRI. The dose profiles are presented with the spatial resolution of 0.6 mm from the acquired 2D images; this value is limited by pixel size, and 1D dose profiles from 1D imaging with spatial resolution of 0.3 mm limited by the intrinsic line-width of potassium dithionate. In this paper, dose profiles from 2D reconstructed electron paramagnetic resonance (EPR) images using the Xepr software package by Bruker are focussed. The conclusion is that using potassium dithionate, the resolution 0.3 mm is sufficient for mapping steep dose gradients if the dosemeters are covering only +/- 2 mm around the centre of the resonator.

Place, publisher, year, edition, pages
Oxford University Press, 2014. Vol. 159, no 1-4, 182-187 p.
National Category
Clinical Medicine
Identifiers
URN: urn:nbn:se:liu:diva-109276DOI: 10.1093/rpd/ncu134ISI: 000338829100025PubMedID: 24748487OAI: oai:DiVA.org:liu-109276DiVA: diva2:737138
Available from: 2014-08-12 Created: 2014-08-11 Last updated: 2017-12-05Bibliographically approved

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Kolbun, NatalliaAdolfsson, EmelieGustafsson, HåkanLund, Eva

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