MRI superconductive magnet
US7323963B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2006 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Jun 29, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/421
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An object of the present invention is to provide a MRI superconductive magnet enables sharp images representing patients' health states to be produced.[Means for Achieving the Object]A MRI superconductive magnet having a superconductive coil, a liquid vessel of liquid helium used to cool the superconductive coil, a heat shield to accommodate the liquid vessel therein, a vacuum chamber to accommodate the heat shield therein, a load supporting body for supporting the superconductive coil from the vacuum chamber and securing the superconductive coil, a second cold part of a multi-stage refrigerator for cooling a heat exchanger to condense evaporated helium gas, and a first cold part of the multi-stage refrigerator for cooling the heat shield, wherein a magnetic shield is provided from the first cold part of the multi-stage refrigerator to an outer periphery of the second cold part of the multi-stage refrigerator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.