Nuclear magnetic resonance apparatus and methods
US4165479A · kind A · utility
55Cited by
1References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 13, 1977 |
| Grant date | Aug 21, 1979 |
| Priority date | — |
| Expiry date | Dec 13, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/5616
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The nuclear magnetic resonance spin density distribution in a sample is obtained by subjecting the sample to a static magnetic field and exciting the sample with a selective or non-selective r.f. excitation pulse and a combination of magnetic field gradients which vary in directions along and orthogonal to the direction of the static field. One or more of the gradients are repetitively reversed to allow cyclic regrowth and decay of the free induction decay signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.