Method and apparatus for fast imaging by nuclear magnetic resonance
US6965233B2 · kind B2 · utility
3Cited by
6References
29Claims
0Family size
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Key dates
| Filing date | Mar 25, 2003 |
| Grant date | Nov 15, 2005 |
| Priority date | — |
| Expiry date | Sep 17, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/5617
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In the acquisition of NMR signals in FSE or fast spin echo type sequences the emission phase of the 180° refocusing pulse evolves quadratically. In order to prevent problems of oscillation of the output signal, the sequence is subjected to a preparation pulses. A history is provided for the common difference of the quadratic sequence of the phase variation with respect to the first seven refocusing pulses. This history leads to an immediate thermal equilibrium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.