1. A magnetic resonance imaging (MRI) apparatus comprising: MRI system components including processing circuitry configured to: detect position information of each of plural target sites of a subject by analyzing previously acquired image data which was acquired using a first magnetic resonance (MR) imaging sequence; specify, based on the image data and position information of the target sites, a first region and a second region which is different from the first region; acquire data of the second region by using a second MR imaging condition which is different from a first MR imaging condition used for acquiring data of the first region specify a region in which automatic detection of the target sites was successful as the first region, and specify a region in which automatic detection of the target sites failed as the second region.