ArticleJournal of magnetic resonance (San Diego, Calif. : 1997)2007
A parametric approach to spectral-spatial EPR imaging.
Article in Journal of magnetic resonance (San Diego, Calif. : 1997), 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed.
- Accurate reconstruction of 4D spectral-spatial images from sparse-view data in continuous-wave EPRI.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2024Article
- 4D-image reconstruction directly from limited-angular-range data in continuous-wave electron paramagnetic resonance imaging.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2023Article
- Implementation of GPU-accelerated back projection for EPR imaging.Journal of X-ray science and technology · 2015Article
- Comparison of parabolic filtration methods for 3D filtered back projection in pulsed EPR imaging.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2014Article
- Compressed sensing of spatial electron paramagnetic resonance imaging.Magnetic resonance in medicine · 2014Article
- Dual-scan acquisition for accelerated continuous-wave EPR oximetry.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2012Article
- Spectral modeling for accelerated pH spectroscopy using EPR.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2012Article
- Multisite EPR oximetry from multiple quadrature harmonics.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2012Article
- Optimization of magnetic field sweep and field modulation amplitude for continuous-wave EPR oximetry.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2011Article
- Digital detection and processing of multiple quadrature harmonics for EPR spectroscopy.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2010Article
- In vivo multisite oximetry using EPR-NMR coimaging.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2010Article
- Regularized optimization (RO) reconstruction for oximetric EPR imaging.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2008Article
- EPR oximetry in three spatial dimensions using sparse spin distribution.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2008Article
- Estimation of mean and median pO2 values for a composite EPR spectrum.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2008Article
Corrections and comments
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Authors and funding
4 authors.
Funding
Abstract
Continuous wave electron paramagnetic resonance imaging for in vivo mapping of spin distribution and spectral shape requires rapid data acquisition. A spectral-spatial imaging technique is presented that provides an order of magnitude reduction in acquisition time, compared to iterative tomographic reprojection. The proposed approach assumes that spectral shapes in the sample are well-approximated by members from a parametric family of functions. A model is developed for the spectra measured with magnetic field modulation. Parameters defining the spin distribution and spectral shapes are then determined directly from the measurements using maximum a posteriori probability estimation. The approach does not suffer approximation error from limited sweep width of the main magnetic field and explicitly incorporates the variability in signal-to-noise ratio versus strength of magnetic field gradient. The processing technique is experimentally demonstrated on a one-dimensional phantom containing a nitroxide spin label with constant g-factor. Using an L-band EPR spectrometer, spectral shapes and spin distribution are accurately recovered from two projections and a spectral window which is comparable to the maximum linewidth of the sample.
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