Topical nuclear magnetic resonance spectrometer and method
US4385277A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 25, 1980 |
| Grant date | May 24, 1983 |
| Priority date | — |
| Expiry date | Nov 25, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/381
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A nuclear magnetic resonance (NMR) spectrometer includes a magnetic field profiling apparatus for producing a resulting static homogeneous magnetic field through a controllable volume and a magnetic field in an immediately adjacent surrounding volume of magnitude varying rapidly with distance. The dimension of the volume of uniform magnetic field and the immediately adjacent volume of rapidly varying magnetic field can be controlled by adjusting the current delivered by a power supply which energizes coils included in the magnetic field profiling apparatus. The generation of homogeneous magnetic fields throughout a controllable volume allows NMR techniques to be applied to a selected region which is located entirely within an inhomogeneous body, such as a particular organ in a human body. The uniformity of the magnetic field is such as to allow chemical shift information to be recovered in an NMR spectrum, and it is significant that this result is achieved in a noninvasive technique.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.