A magnetic resonance imaging apparatus comprising: a determining unit configured to perform first imaging multiple times and to, in a case in which a fluid traveling through a subject is imaged multiple times at different phases, determine a second period on a time axis within which second imaging is performed multiple times; wherein the determining unit is configured to collect, as the first imaging performed multiple times, a plurality of images at different time phases of cardiac cycles while changing a time from a synchronization signal, thereby providing a first temporal resolution covering the entire cardiac cycle, and the determining unit is configured to determine the second period within a cardiac cycle based on the plurality of images, wherein the second period is shorter than a cardiac cycle; an imaging unit configured to perform the second imaging multiple times at different time phases of cardiac cycles while changing a time from the synchronization signal, thereby providing a second temporal resolution covering the cardiac cycle and by using an imaging method in which a signal value of the fluid flowing into or flowing out of an imaging area is increased or reduced by labeling the fluid flowing into or flowing out of the imaging area in a position independent of the imaging area, wherein the first temporal resolution is lower than the second temporal resolution, and the determining unit is configured to perform, as the first imaging for the multiple times, black-blood time to inversion-prep imaging, hereinafter referred to as BBTI-prep imaging, to collect the plurality of images at the different time phases while changing a black-blood time to inversion time from a synchronization signal and is further configured to display on a display the first images collected by the BBTI-prep imaging and a transition of signal values analyzed on the basis of the images, the BBTI-prep imaging being a time-spatial labeling inversion pulse imaging method, hereinafter referred to as Time-SLIP imaging method, with 2D fast asymmetric spin echo, FASE, and the imaging unit is configured to perform, in the second period, the second imaging for the multiple times by using a Time-SLIP imaging method. a determining unit configured to perform first imaging multiple times and to, in a case in which a fluid traveling through a subject is imaged multiple times at different phases, determine a second period on a time axis within which second imaging is performed multiple times; wherein the determining unit is configured to collect, as the first imaging performed multiple times, a plurality of images at different time phases of cardiac cycles while changing a time from a synchronization signal, thereby providing a first temporal resolution covering the entire cardiac cycle, and the determining unit is configured to determine the second period within a cardiac cycle based on the plurality of images, wherein the second period is shorter than a cardiac cycle; an imaging unit configured to perform the second imaging multiple times at different time phases of cardiac cycles while changing a time from the synchronization signal, thereby providing a second temporal resolution covering the cardiac cycle and by using an imaging method in which a signal value of the fluid flowing into or flowing out of an imaging area is increased or reduced by labeling the fluid flowing into or flowing out of the imaging area in a position independent of the imaging area, wherein the first temporal resolution is lower than the second temporal resolution, and the determining unit is configured to perform, as the first imaging for the multiple times, black-blood time to inversion-prep imaging, hereinafter referred to as BBTI-prep imaging, to collect the plurality of images at the different time phases while changing a black-blood time to inversion time from a synchronization signal and is further configured to display on a display the first images collected by the BBTI-prep imaging and a transition of signal values analyzed on the basis of the images, the BBTI-prep imaging being a time-spatial labeling inversion pulse imaging method, hereinafter referred to as Time-SLIP imaging method, with 2D fast asymmetric spin echo, FASE, and the imaging unit is configured to perform, in the second period, the second imaging for the multiple times by using a Time-SLIP imaging method.