Magnetic resonance system with RF power measurement check using a calibrated test pulse
US9897679B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 5, 2015 |
| Grant date | Feb 20, 2018 |
| Priority date | — |
| Expiry date | Aug 8, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/583
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A predetermined reference object is arranged in a scan volume of a magnetic resonance system. In the scope of adjustment measurements, the reference object is respectively exposed by a radiofrequency transmitter antenna to an adjustment pulse. Using at least one radiofrequency receiver antenna, a magnetic resonance signal excited by the respective adjustment pulse in the reference object is respectively recorded. An amplitude of a first test pulse is ascertained with the aid of the magnetic resonance signals recorded in the scope of the adjustment measurements. In the scope of a subsequent test measurement, the reference object is exposed to the first test pulse by the radiofrequency transmitter antenna. A first measurement signal dependent on the amplitude of the first test pulse is recorded during the exposure of the reference object to the first test pulse. Further measures are implemented based on the recorded first measurement signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.