Magnetic resonance imaging apparatus and method thereof

A magnetic resonance imaging apparatus, comprising:

• processing circuitry configured to
• calculate a phase shift amount of each of a plurality of echo signals collected by a fast spin echo method by accumulating a first phase shift amount at each time point that a refocusing pulse is applied and a second phase shift amount at each time point that a spin echo signal is generated, by simulation calculation in which a phase variation of an echo component included in the echo signal is modeled;
• correct, based on the calculated phase shift amount, phases of refocusing pulses applied in a pulse sequence such that the phases match at each time point at which the respective echo signals are generated;
• and
• execute the pulse sequence in which the refocusing pulses of the corrected phases are applied.

A magnetic resonance imaging method, comprising:

• calculating, based on a pulse sequence used in data collection by a fast spin echo method, a phase shift amount on at least one echo component included in each of a plurality of echo signals collected by the pulse sequence by accumulating a first phase shift amount at each time point that a refocusing pulse is applied and a second phase shift amount at each time point that a spin echo signal is generated;
• correcting, based on the calculated phase shift amount, phases of refocusing pulses applied in the pulse sequence such that phases match at least one of between spin echo components, between stimulated echo components, and between a spin echo component and a stimulated echo component;
• and
• executing the pulse sequence in which the refocusing pulses of the corrected phases are applied.