Patent ID: 8624596
Filing Date: 2014-01-07
Classification: G01R

Abstract:
1. A method for determining motion parameters of an object in a magnetic resonance based imaging device, the method which comprises: generating a magnetic resonance field in a magnetic resonance based imaging device; generating at least one reference displacement of the object between two predefined positions with respect to a plurality of coils in the magnetic resonance based imaging device; with the magnetic resonance based imaging device, measuring intensity values of navigator signals induced in the plurality of coils by the magnetic resonance field at the two predefined positions, and recording the intensity values of the navigator signals in at least one calibration map; determining each one of a unpredetermined sequence of further positions of the object in motion relative to the plurality of coils by measuring intensity values of navigator signals of the plurality of coils and comparing changes of the intensity values of the navigator signals with the calibration map.