Body coil tuning control device and magnetic resonance system
US11959983B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2022 |
| Grant date | Apr 16, 2024 |
| Priority date | — |
| Expiry date | Oct 20, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/158
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Body coil tuning control device having: DC-DC converter with input connected to a DC power supply of an MRI system and output connected to input of an LDO, output of the LDO connected to first connection of a first resistor group; a first opamp with non-inverting input connected to first connection of the first resistor group, inverting input connected to the second connection of the first resistor group, and output connected to gate of a MOSFET array; and a negative feedback circuit connected between the output and the non-inverting input of the first opamp. The MOSFET array has a drain connected to the second connection of the first resistor group and a source connected to the input of the body coil of the MRI system. After the output signal of the first opamp is input to the gate of the MOSFET array, the source outputs a constant preset current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.