Two-dimensional spectral-spatial EPR imaging with the rapid scan and modulated magnetic field gradient
Czechowski T.1, Chlewicki W.1,3, Baranowski M.1,2, Jurga K.1, Szczepanik P.1, Szulc P.1, 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, 60-965 Poznan, Poland
- 2Department of Physics, Adam Mickiewicz University, 61-614 Poznan, Poland
- 3Faculty of Electrical Engineering, West Pomeranian University of Technology, 70-310 Szczecin, Poland
- 4Department of Organometallic Chemistry, Adam Mickiewicz University, 60-780 Poznan, Poland
Journal of Magnetic Resonance, 243, pp.1-7, 2014
DOI:: 10.1016/j.jmr.2014.03.001
Abstract:
A new method for fast spectral-spatial 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 gradients, whose amplitude is modulated at low frequency. The correctness of the method is confirmed by studies carried out on a phantom consisting of two LiPc samples. The spectral-spatial images from the acquired data are reconstructed using iterative algorithms. The proposed method allows to acquire the spectral-spatial image with 800 projections at 200 ms. © 2014 Elsevier Inc. All rights reserved.
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