ArticleJournal of magnetic resonance (San Diego, Calif. : 1997)2021
Efficient gradient waveform measurements with variable-prephasing.
Article in Journal of magnetic resonance (San Diego, Calif. : 1997), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Modeling the MRI gradient system with a temporal convolutional network: Improved reconstruction by prediction of readout gradient errors.Magnetic resonance in medicine · 2026Article
- Article
- Phantom-based gradient waveform measurements with compensated variable-prephasing: Description and application to EPI at 7 T.Magnetic resonance in medicine · 2025Article
- Article
- Finite element analysis of bone mechanical properties using MRI-derived bound and pore water concentration maps.Computer methods in biomechanics and biomedical engineering · 2023Article
- Fast bound and pore water mapping of cortical bone with arbitrary slice oriented two-dimensional ultra-short echo time.Magnetic resonance in medicine · 2023Article
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Authors and funding
2 authors.
Funding
Abstract
Accurate measurement of gradient waveform errors can often improve image quality in sequences with time varying readout and excitation waveforms. Self-encoding or offset-slice sequences are commonly used to measure gradient waveforms. However, the self-encoding method requires a long scan time, while the offset-slice method is often low precision, requiring the thickness of the excited slice to be small compared to the maximal k-space encoded by the test waveform. This work introduces a hybrid these methods, called variable-prephasing. Using a straightforward algebraic model, we demonstrate that variable-prephasing improves the precision of the waveform measurement by allowing acquisition of larger slice thicknesses. Experiments in a phantom were used to validate the theoretical predictions, showing that the precision of variable-prephasing gradient waveform measurements improves with increasing slice thickness.
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