Patent · US Expired

MRI tomography apparatus for generating a motion signal

US4694836A · kind A · utility

19Cited by

10References

14Claims

0Family size

Assignee

U.S. Philips Corporation · US

Inventors

Dirk Buikman · Hamburg, DE
Thomas Helzel · Kaltenkirchen, DE
Peter Roschman · Hamburg, DE

Key dates

Filing date	Dec 16, 1985
Grant date	Sep 22, 1987
Priority date	—
Expiry date	Dec 16, 2005

Classification

Technology area (CPC G)Physics
CPC primaryG01R33/28
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method of generating a motion signal which is dependent on motion of a body to be examined in an MRI tomography apparatus, characterized in that during the examination the impedance of a high-frequency coil system (33; 34) whose field acts on the body (3) to be examined and which is tuned to a predetermined resonance frequency is measured in the resonance frequency range with the motion signal being derived from the measurement signal just formed.

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