Method and system of acquiring MR data of fat tissue. corresponding MR image construction method and system

摘要

An object of the present invention is to acquire data, which is used to construct a water component-enhanced/fat component-suppressed image, with a repetition time TR set to a desired value. Included are a data acquisition unit and an image construction unit. The data acquisition unit acquires data D_ phi fat according to a steady-state pulse sequence specifying that the phase of an RF pulse is varied in order of 0, 1x phi fat, 2x phi fat, etc. Herein, phi fat=(2-TR/T_out+2xm)x pi is established on the assumption that m denotes an integer equal to or larger than 0 and meets TR/(2xT_out)-1<m<TR/(2xT_out) where TR denotes the repetition time and T_out denotes the time during which spins in water and spins in fat are out of phase with each other due to chemical shifts. The image construction unit constructs an MR image Gw using the data D_ phi fat.