Magnetic resonance imaging system with emergency quench
US11280862B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2018 |
| Grant date | Mar 22, 2022 |
| Priority date | — |
| Expiry date | Feb 22, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F6/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a magnetic resonance imaging (MRI) system with emergency quench. According to the invention, a magnetic resonance imaging system (1) comprising a superconductive magnet (2) with windings (3) for generating a magnetic field, an emergency button (4) and a circuitry logic (5) for controlling the magnet (2) coupled to the magnet (2) and to the emergency button (4), wherein the magnet (2) is operable in a superconducting state and in a normal conductivity state, respectively, and the emergency button (4) and the circuitry logic (5) are configured in such a way that, when the magnet (2) is operated in the superconducting state, actuating the emergency button (4) by a user in a predefined first way initiates ramping down the magnetic field while dissipating energy stored in the windings (3) of the magnet (2) to an external dissipation device (6), and actuating the emergency button (4) by a user in a predefined second way which is different from the first way initiates quenching the magnetic field by heating up at least part of the windings (3) of the magnet (2) leading to a dissipation of energy stored in the windings (3) of the magnet (2) as additional heat to th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.