Two-dimensional spectral-spatial EPR imaging with the rapid scan and modulated magnetic field gradient.
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 200ms.
Laboratory of EPR Tomography, Poznan University of Technology, 60-965 Poznan, Poland. Electronic address: tomasz.czechowski@put.poznan.pl.
T
T
Czechowski
Laboratory of EPR Tomography, Poznan University of Technology, 60-965 Poznan, Poland; Faculty of Electrical Engineering, West Pomeranian University of Technology, 70-310 Szczecin, Poland.
W
W
Chlewicki
Laboratory of EPR Tomography, Poznan University of Technology, 60-965 Poznan, Poland; Department of Physics, Adam Mickiewicz University, 61-614 Poznan, Poland.
M
M
Baranowski
Laboratory of EPR Tomography, Poznan University of Technology, 60-965 Poznan, Poland.
K
K
Jurga
Laboratory of EPR Tomography, Poznan University of Technology, 60-965 Poznan, Poland.
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P
Szczepanik
Laboratory of EPR Tomography, Poznan University of Technology, 60-965 Poznan, Poland.
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P
Szulc
Laboratory of EPR Tomography, Poznan University of Technology, 60-965 Poznan, Poland.
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P
Kedzia
Laboratory of EPR Tomography, Poznan University of Technology, 60-965 Poznan, Poland.
M
M
Szostak
Laboratory of EPR Tomography, Poznan University of Technology, 60-965 Poznan, Poland.
P
P
Malinowski
Laboratory of EPR Tomography, Poznan University of Technology, 60-965 Poznan, Poland.
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S
Wosinski
Laboratory of EPR Tomography, Poznan University of Technology, 60-965 Poznan, Poland; Department of Organometallic Chemistry, Adam Mickiewicz University, 60-780 Poznan, Poland.
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W
Prukala
Laboratory of EPR Tomography, Poznan University of Technology, 60-965 Poznan, Poland.
J
J
Jurga
EPR imaging; Modulated gradient; Rapid scan; Spectral–spatial imaging