## FIG. 4. Shown are 180ยฐinversion pulses corresponding to s ฯญ 0 (solid line), s ฯญ 0.5 (dashed line), and s ฯญ 1.0 (dot-dashed line). All three waveforms give precisely the same inversion profile.
Random noise selective excitation pulses
โ Scribed by Roger J. Ordidge
- Publisher
- John Wiley and Sons
- Year
- 1987
- Tongue
- English
- Weight
- 389 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0740-3194
No coin nor oath required. For personal study only.
โฆ Synopsis
Several methods for the spatial localization of NMR signals from well-defined regions of tissue within extended specimens have been proposed. Most of these techniques are prone to signal error which can arise from large volumes of sample that surround the region of interest. These errors can theoretically be reduced by several orders of magnitude by the application of a radiofrequency prepulse. The pulse acts to randomize the unwanted spin magnetization prior to the application of a spatial localization technique.
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