Patent ID: 8384382

Claim:
A magnetic resonance imaging apparatus comprising: static magnetic field generation means configured to generate a static magnetic field; gradient magnetic field generation means configured to generate a gradient magnetic field in a plurality of axes directions; high-frequency magnetic field generation means configured to irradiate a high-frequency magnetic field to an object to be imaged; signal detection means configured to detect a nuclear magnetic resonance signal produced from the object to be imaged; control means configured to control the operation of the gradient magnetic field generation means, the high-frequency magnetic field generation means and the signal detection means so as to acquire data in k-space by executing a predetermined imaging pulse sequence; and arithmetic processing means configured to perform image reconstruction by executing arithmetic processing with respect to the k-space data, wherein: the imaging pulse sequence includes a tagging sequence for modulating nuclear magnetization of the object to be imaged and an imaging sequence for making a part of the k-space data not to be measured; the control means comprises measurement requiring region specification means configured to specify the measurement region in the k-space (measurement requiring region) required for reflecting the effect of the modulated nuclear magnetization on the image to be reconstructed and sequence modification means configured to modify the relevant imaging sequence so that the measurement region specified by the measurement requiring region specification means is to be measured upon executing the imaging sequence; the measurement requiring region includes the position having the maximum value of the signal intensity in the kr-direction and the kp-direction other than the original point and is the closest position to the original point (echo peak) in the k-space; and the measurement requiring region specification means comprises echo peak position calculation means configured to calculate the echo peak generation position from the imaging parameter of the imaging sequence.