A magnetic resonance imaging apparatus which executes a mask scan for acquiring, as mask data, magnetic resonance signals produced in an imaging area in which a fluid flows through a subject, in a state in which a contrast agent is not injected into the fluid, and an imaging scan for acquiring, as imaging data, magnetic resonance signals produced in the imaging area in which the fluid containing the contrast agent flows after the injection of the contrast agent into the fluid, so as to correspond to a TRICKS method, thereby sequentially generating images about the imaging area along a time base, said magnetic resonance imaging apparatus includes a scan device which executes the mask scan and the imaging scan, wherein upon execution of the mask scan, the scan device repeatedly executes scans for transmitting a spatial saturation pulse to a corresponding area containing the fluid flowing into the imaging area and thereafter sequentially acquiring the magnetic resonance signals as the mask data every time of repetition, so as to correspond to respective segments divided into plural form in a k space.