✦ LIBER ✦
An analysis of the intrinsic resonance offset dependence of magnetization generated by stimulated echo pulse sequences for noncoupled spins
✍ Scribed by D. Ballon; M. Garwood; J.A. Koutcher
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 610 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0730-725X
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✦ Synopsis
It is demonstrated that the basic radiofrequency pulse train used to generate stimulated echoes (90x-tau TE-90x-tau TM-90x-tau TE-Acq.) is in general characterized by strong amplitude and phase modulations of the transverse magnetization as a function of the resonance offset. Two dephasing techniques which eliminate the modulations are investigated both theoretically and experimentally, and a simple formula is derived for calculating the relative modulation across a spectrum as a function of gradient strength and duration, echo delay, and spectral linewidth.