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.