## Abstract Mechanical vibrations of the gradient coil system during readout in echo‐planar imaging (EPI) can increase the temperature of the gradient system and alter the magnetic field distribution during functional magnetic resonance imaging (fMRI). This effect is enhanced by resonant modes of v
✦ LIBER ✦
Resonance shifts in ABMR due to inhomogeneities of the magnetic and rf-fields
✍ Scribed by Böklen, K. D.
- Publisher
- Springer-Verlag
- Year
- 1974
- Weight
- 578 KB
- Volume
- 270
- Category
- Article
- ISSN
- 0044-3328
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Gradient pulses used in most localization techniques induce time-dependent shifts in Bo that strongly distort NMR signals. A postprocessing correction method requiring no additional hardware is proposed. The phase shift produced by the Bo shift is calculated from a reference free induction decay (FI