RF pulse control system for a magnetic resonance imaging transmitter
US4739268A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1987 |
| Grant date | Apr 19, 1988 |
| Priority date | — |
| Expiry date | Jan 21, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3036
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pulse control system for a magnetic resonance imaging transmitter has circuitry for detecting the peak value of the RF current in the transmitter coil for a given RF pulse; circuitry for comparing the detected peak value of the RF current with a desired reference peak value for the RF pulse, for determining the difference between the detected and the desired peak values for the RF pulse, and for determining a gain adjustment factor for the transmitter amplifier for the transmitter necessary to produce the desired peak value of the RF current in the transmitter coil; and circuitry for adjusting the gain of the transmitter amplifier in response to the gain adjustment factor to produce the desired peak value of the RF current for the RF pulse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.