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- W2095804177 abstract "Abstract A rapid and self‐calibrated parallel imaging reconstruction method is proposed for undersampled variable density spiral datasets. A set of generalized GRAPPA for wider readout line operators are used to expand each acquired spiral line into a wider spiral band, therefore fulfilling Nyquist sampling criterion throughout the k ‐space. The calibration of generalized GRAPPA for wider readout line operators is performed using the fully sampled central k ‐space region. The resulting generalized GRAPPA for wider readout line operator weights are adaptively regularized to minimize the error in the newly‐generated data at different k ‐space locations. Simulation and experimental results demonstrate that the technique can be used either to achieve a significant acceleration and/or to reduce off‐resonance artifacts due to a shorten readout duration. Magn Reson Med, 2011. © 2011 Wiley‐Liss, Inc." @default.
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- W2095804177 date "2011-04-05" @default.
- W2095804177 modified "2023-10-17" @default.
- W2095804177 title "Generalized GRAPPA operators for wider spiral bands: Rapid self-calibrated parallel reconstruction for variable density spiral MRI" @default.
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- W2095804177 doi "https://doi.org/10.1002/mrm.22900" @default.
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