Process for the modulation of the speed effect of moving parts of a body in a nuclear magnetic resonance density measurement and performance of the process in order to deduce therefrom the speed of the moving parts in question
US4694253A · kind A · utility
8Cited by
3References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 12, 1985 |
| Grant date | Sep 15, 1987 |
| Priority date | — |
| Expiry date | Dec 12, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/56341
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to a process for modulating the effect of the speed of the moving parts of a body. The machines or processes for measuring the density by nuclear magnetic resonance are too sensitive at the displacement speed of the parts in question. In the invention, the sensitivity of the machines or processes is reduced in such a way that the speed effect can be measured. Prior to the measurement, compensating magnetic field sequences are applied in order to counteract the effect produced by the interfering magnetic field sequences, which are necessary for performing the measurement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.