Magnetic resonance tomography with slow temperature variation compensation
US10386431B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2017 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Nov 11, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG16H40/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic resonance tomography system has a frequency control device for temperature compensation, a temperature sensor, and a high frequency generator. An output frequency of an output signal from the high frequency generator is dependent on a value of a digital frequency variable, and a synthesis signal with the system frequency is generated dependent on the output signal. A temperature change is detected using the temperature sensor, a temperature-time function of the temperature is determined using the temperature change that has been detected, a time is determined at which a change in the digital frequency variables in the least significant bit brings about a change in the frequency of the synthesis signal that corresponds with a change in the system frequency due to a temperature, according to the interpolated temperature-time function, and the digital frequency variable in the least significant bit is changed at the specified time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.