Frequency selective pulse
US6441613B1 · kind B1 · utility
8Cited by
6References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 1997 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Aug 22, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02G7/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of NMR (nuclear magnetic resonance) excitation of a sample having a magnetic moment, including, applying a longitudinal magnetic field to the sample; and changing the magnetic moment in a substantially continuous manner by moving an effective magnetic-field vector &ohgr;e more than 90°, wherein for all portions of the sample in which the moment is changed, the angular velocity of the effective field vector at at least one angle, 90°+&agr;, is different from the angular velocity at 90°−&agr;.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.