EPR imaging of dose distributions aiming at applications in radiation therapy
2014 (English)In: Radiation Protection Dosimetry, ISSN 0144-8420, E-ISSN 1742-3406, Vol. 159, no 1-4, 130-136 p.Article in journal (Refereed) Published
A one-dimensional electron paramagnetic resonance (EPR) imaging method for visualisation of dose distributions in photon fields has been developed. Pressed pellets of potassium dithionate were homogeneously irradiated in a Co-60 radiation field to 600 Gy. The EPR analysis was performed with an X-Band (9.6 GHz) Bruker E540 EPR and EPR imaging spectrometer equipped with an E540 GC2X two-axis X-band gradient coil set with gradients along the y axis (along the sample tube) and z axis (along B-0) and an ER 4108TMHS resonator. Image reconstruction, including deconvolution, baseline corrections and corrections for the resonator sensitivity, was performed using an in-house-developed Matlab code for the purpose to have a transparent and complete algorithm for image reconstruction. With this method, it is possible to visualise a dose distribution with an accuracy of similar to 5 % within +/- 5 mm from the centre of the resonator.
Place, publisher, year, edition, pages
Oxford University Press, 2014. Vol. 159, no 1-4, 130-136 p.
IdentifiersURN: urn:nbn:se:liu:diva-109275DOI: 10.1093/rpd/ncu142ISI: 000338829100018PubMedID: 24757173OAI: oai:DiVA.org:liu-109275DiVA: diva2:737139