FIELD: physics.
SUBSTANCE: invention relates to a magnetic resonance elastography method. A magnetic resonance elastography method comprising steps of applying mechanical vibrations with a period (T) to an analysed object to generate mechanical waves in the object; applying a motion-sensitive magnetic resonance data collection sequence with repetition time TR for collecting magnetic resonance signals from the object, wherein the data collection sequence includes applying phase coding steps within a separate repetition time, and for each phase encoding, measuring the phase of mechanical vibrations, wherein the repetition time, multiplied by the number of phase encodings within one repetition time, is not equal to an integer-valued multiple of the vibration period; mechanical vibrations are generated at multiple vibration frequencies simultaneously, and a magnetic resonance image of the wave structure is reconstructed from magnetic resonance signals collected in sampling space, defined by the measured phase of mechanical vibrations and the phase encoding.
EFFECT: faster data collection.
6 cl, 2 dwg
