Two-dimensional EPR imaging with the rapid scan and rotated magnetic field gradient
Czechowski T.1, Chlewicki W.1,3, Baranowski M.1,2, Jurga K.1, Szczepanik P.1, Szulc P.1, Tadyszak K.5, Kedzia P.1, Szostak M.1, Malinowski P.1, Wosinski S.1, Prukala W.1,4, Jurga J.1
- 1Laboratory of EPR Tomography, Poznan University of Technology, 3 Piotrowo Street, Poznan, Poland
- 2Department of Physics, Adam Mickiewicz University, Poznan, Poland
- 3Faculty of Electrical Engineering, West Pomeranian University of Technology, Szczecin, Poland
- 4Department of Organometalic Chemistry, Adam Mickiewicz University, Poznan, Poland
- 5NanoBioMedical Centre, Adam Mickiewicz University, ul. Umultowska 14, Poznan, Poland
Journal of Magnetic Resonance, 248, pp.126-130, 2014
DOI:: 10.1016/j.jmr.2014.09.022
Abstract:
A new method for fast 2D Electron Paramagnetic Resonance Imaging (EPRI) is presented. To reduce the time of projections acquisition we propose to combine rapid scan of Zeeman magnetic field using high frequency sinusoidal modulation with simultaneously applied magnetic field gradient, whose orientation is changed at low frequency. The correctness of the method is confirmed by studies carried out on a phantom consisting of two LiPc samples. The images from the acquired data are reconstructed using iterative algorithms. The proposed method allows to reduce the image acquisition time up to 10 ms for 2D EPRI, and to detect the sinogram with infinitesimal angular step between projections. © 2014 Elsevier Inc. All rights reserved.
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