And T2 contrast in magnetic resonance image formation with a gradient echo

摘要

PROBLEM TO BE SOLVED: To provide a method capable of obtaining a T2 contrast image within time approximate to T1 image formation in MRI (nuclear magnetic resonance image formation). SOLUTION: An object is moved to a scanner, and a pulse sequence including a series of readout gradient pulses is applied, so plural sets of MR data (nuclear magnetic resonance signals) are obtained. Next, based on obtained MD data, an image of size (tension) and phase is recomposed, and a data array is composed for each pixel. A model of a non-linear function F (TE) of gradient echo time is then selected to offset ununiformity of a magnetic field. The MR data is applied to a formula including the non-linear function F (TE), and by using result of application, an S (0) image and a T2 image are recomposed.