Multiple pulse excitation in NMR imaging
US4672319A · kind A · utility
3Cited by
4References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 19, 1984 |
| Grant date | Jun 9, 1987 |
| Priority date | — |
| Expiry date | Sep 19, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/4833
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Improved nuclei excitation for NMR applications is provided by employing a sequence of RF pulses for exciting the nuclei. Non-linearities in pulse excitation are compensated by applying at least one additional RF pulse thereby improving slice definition and/or phase characteristics. In one application, one or more initial RF pulses establish an intermediate state for the nuclei from which the nuclei can be tilted to a final desired magnetic moment state by the application of a single RF pulse. The order of applying the magnetic pulses can be reversed when the flip/angle is 180 degrees.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.