Universal-multi-layered, multi-tuned RF probe for MRI and MRS
US6081120A · kind A · utility
Inventor
Key dates
| Filing date | May 20, 1998 |
| Grant date | Jun 27, 2000 |
| Priority date | — |
| Expiry date | May 20, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/3635
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A universal-tuned RF probe (8) is disclosed which covers all current nuclear MRS and MRI applications and anticipates the utilization of multiple nuclides. This probe comprises a switchable thin multi-layer coil (29, 30, 31), electronically controlled switches (11, 12), an impedance matching circuit (13-20), and a resonant frequency tuning circuit (21-28). By quick switching, all different nuclei are detected independently, therefore their performances can be optimized individually. Fast switching (of less than 10.sup.-9 seconds) allows multiple frequencies to operate simultaneously. A switchable thin multi-layer coil (29, 30, 31) is used to cover a wide range of resonant frequencies and maintain identical RF B1 magnetic fields for all the different nuclei.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.