A magnetic resonance imaging apparatus (100) according to one embodiment includes an arranger (123a), a sensitivity deriver (123c), and an image generator (123d). The arranger (123a) arranges time-series data at a part of sampling points out of sampling points of a k-space determined based on an imaging parameter. The sensitivity deriver (123c) derives a sensitivity distribution in a time-space, in which the time-series data transformed in a time direction is expressed with a coefficient value, based on the time-series data. The image generator (123d) generates an image of the time-series data using the time-series data and the sensitivity distribution.
