Patent ID: 9507001
Filing Date: 2016-11-29
CPC Classification: G01R

Claim Text:
1. A magnetic resonance imaging method for sequential scanning of a subject and acquiring echo data from the subject in a plurality of echo acquisition timeslots, comprising: operating a magnetic resonance data acquisition unit to execute a magnetic resonance data acquisition sequence comprising excitation and nuclear spins that produces a plurality of echoes in a plurality of echo acquisition timeslots, and acquiring magnetic resonance data in said echo acquisition timeslots, as echo data exhibiting a phase; operating said magnetic resonance data acquisition unit to produce, in said data acquisition sequence, navigation data exhibiting a phase, and acquiring said navigation data in a navigation acquisition timeslot in said data acquisition sequence; entering said navigation data and said echo data into a memory as k-space data in k-space; from a processor, accessing said memory and automatically determining whether to accept or reject the echo data in k-space dependent on a relationship between the phase of the navigation data and the phase of reference data, by accepting said echo data, as accepted data, if said relationship is greater than or equal to a reference value, and rejecting said echo data, as rejected data, if said relationship is less than said reference value; from said processor, when said k-space data contain rejected data, causing said magnetic resonance data acquisition unit to be operated to repeat said magnetic resonance data acquisition sequence until said k-space data do not contain rejected data; and when said k-space data do not contain rejected data, making said accepted data available as a data file at an output of said processor.