System for measuring a magnetic resonance signal based on a hybrid superconductive-magnetoresistive sensor
US7944205B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2007 |
| Grant date | May 17, 2011 |
| Priority date | — |
| Expiry date | Dec 23, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/34023
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The system for measuring a magnetic resonance signal within a sample (4) placed in a static external magnetic field (H) includes an excitation device (1 to 3, 6 to 10) for applying high-intensity radio-frequency pulses at a predetermined emission frequency fe in a measurement zone containing the sample (4). The excitation device includes an excitation coil (3) tuned to the predetermined emission frequency fe and disposed in the vicinity of the sample (4) in such a way as to produce an electromagnetic field essentially perpendicular to the static external magnetic field (H). The system further includes at least a superconductive-magnetoresistive hybrid sensor (5) including a superconductive loop having a constriction adapted to increase significantly the current density and at least a magnetoresistive sensor placed in the immediate vicinity of said constriction (72) and being separated therefrom by an insulative deposit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.