Methods of indicating nuclear spin density distribution
US4318044A · kind A · utility
7Cited by
2References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 29, 1980 |
| Grant date | Mar 2, 1982 |
| Priority date | — |
| Expiry date | Feb 29, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/54
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Spin density distribution in a sample subjected to a static magnetic field along a y-axis is determined by subjecting the sample to an initial magnetic field gradient Gz to the static field together with a 90.degree. selective rf pulse to select a strip. The Gz gradient is then replaced by a filter gradient Gx for a limited period of time during which the free induction signal only partially decays and then immediately replacing the filter gradient by a read gradient Gy and then reading out the free induction decay signal. The sequence may be repeated cyclically with a delay between each cycle. (FIG. 4).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.