High-frequency coil for nuclear magnetic imaging
US4875013A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1988 |
| Grant date | Oct 17, 1989 |
| Priority date | — |
| Expiry date | Mar 2, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/343
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A high-frequency coil of the type of slot resonator in which outer conductors that have wing portions at both ends thereof and that are divided, are formed on the cylindrical surface, and ring-like inner conductors are formed on the inside of the wing portions. The wing portions have a width different from the width of the inner conductors. The self resonance frequency of the coil is adjusted by adjusting the width which is smaller than the other width. Further, the neighboring tips of the wing portions are opposed to each other via an air gap. The self resonance frequency is also adjusted depending upon the position of the dielectric plate inserted in the gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.