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
The correction of transient B0 field shifts following the application of pulsed gradients by phase correction in the time domain
β Scribed by R.J Ordidge; I.D Cresshull
- Publisher
- Elsevier Science
- Year
- 1986
- Weight
- 241 KB
- Volume
- 69
- Category
- Article
- ISSN
- 0022-2364
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A new method is presented for the amelioration of eddy-current-induced \(B_{0}\) shifts based on direct FM modulation of the spectrometer transmitter and receiver reference frequencies. The waveform for correction is based on a dynamic spherical-harmonic expansion of the temporal field, requiring no
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