Patent · US Active

Method and system for synchronizing a rotational eccentric mass with a magnetic resonance elastography scan

US11821972B2 · kind B2 · utility

0Cited by

0References

14Claims

0Family size

Assignee

Siemens Healthcare Limited · DE

Inventors

Omar Darwish · London, GB
Radhouene Neji · London, GB
Ahmed M. Gharib · Everett, US
Ralph Sinkus · Hamburg, DE

Key dates

Filing date	Mar 23, 2022
Grant date	Nov 21, 2023
Priority date	—
Expiry date	Apr 30, 2042

Classification

Technology area (CPC H)Electricity
CPC primaryH02P8/22
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The present disclosure is directed to techniques for synchronizing a rotational eccentric mass of a gravitational transducer used for a magnetic resonance elastography acquisition with a corresponding magnetic resonance elastography scan carried out by a magnetic resonance imaging system, wherein the rotation of the eccentric mass is driven by a shaft. The method includes starting the rotation of the eccentric mass at a set vibration frequency and the magnetic resonance elastography scan at a set acquisition frequency; determining the rotational position of the shaft; defining the rotational position as first reference position; calculating further reference positions. At the start time of each subsequent acquisition period, determining the current rotational position of the shaft; comparing the determined current rotational position with the theoretically expected reference position and decreasing or increasing the rotational speed of the rotational eccentric mass based on the comparison.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.