Scaling of EPR spectral-spatial images with size of sample: images of a sample greater than 5 cm in linear dimension.
The authors have obtained spectral-spatial EPR images of a phantom significantly larger than those previously obtained. Images of a homogeneous phantom 4.2 cm in diameter and 6.5 cm in length with B1 equivalent to that used for smaller samples give a similar linewidth resolution both with linewidth population distributions of width 0.1 microT. Spatial resolution appeared to have modest degradation. Images of the large homogeneous phantom provide maps of the magnetic field of a partially shimmed magnet.
Ahn
Kang-Hyun
KH
Department of Radiation and Cellular Oncology, University of Chicago, Chicago, Illinois 60637, USA.
Subramanian
V S
VS
Halpern
Howard J
HJ
D003198:Computer Simulation; D004578:Electron Spin Resonance Spectroscopy / Q000295:instrumentation* / Q000379:methods*; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D019047:Phantoms, Imaging