Two dimensional B1-gradient NMR imager
US6538444B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2002 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | May 28, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/4831
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A two dimensional B1-gradient NMR imager and methods for non-invasive spectroscopic investigations and imaging of the internal distribution and speciation of materials of fluid, solid, and semisolid objects in two spatial dimensions utilizing a toroid cavity detector. An RF signal transmitter/receiver generates a magnetic field B1 within the toroid cavity and receives a sample response to the magnetic fields B0 and B1. A pivot angle position controller adjusts a pivot angle position of the toroid cavity and enclosed sample to vary an angle between the magnetic field B0 and the central axis of said toroid cavity. A positional rotation controller positions the toroid cavity and enclosed sample at variable angular orientations relative to an initial position and a plane formed by the externally applied static main magnetic field B0 and the central axis of the toroid cavity. A computer sequentially receives and processes sample responses to produce a two-dimensional image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.