Patent ID: 11885864
Assignee: FUJIFILM HEALTHCARE CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A magnetic resonance imaging apparatus comprising:
a static magnetic field generating magnet for generating a static magnetic field;
a high-frequency transmitting unit for irradiating an RF pulse to a subject placed in a static magnetic field space;
a receiving unit for receiving an echo signal generated from the subject;
a gradient magnetic field generating unit for generating a gradient magnetic field for encoding the echo signal;
a control unit for controlling the high-frequency transmitting unit, the receiving unit and the gradient magnetic field generating unit according to a predetermined pulse sequence;
and an arithmetic unit for image reconstruction using the echo signal,
wherein in irradiating while using a pulse sequence of a spin echo system including irradiation of an excited RF pulse for exciting nuclear spin and irradiation of inversion RF pulses for inverting the excited nuclear spin as the pulse sequence, the high-frequency transmission unit changes an irradiation phase of each inversion RF pulse of the pulse sequence of the spin echo system that is to be irradiated after a predetermined repetition time TR from spin excitation, according to phase encode imparted for the echo signal and a phase encoding number, the irradiation phase of said each inversion RF pulse to be irradiated after the predetermined repetition time TR from the spin excitation being represented by a quadratic function of the phase encode.