A method for obtaining a magnetic resonance imaging (MRI) image of an object is provided. The method includes applying a MRI sequence to a target area in the object, receiving magnetic resonance (MR) signals from the target area, acquiring, in one k-space strategy, a first set of k-space lines based on the MR signals while nuclear spins in the target area are in a transient state, acquiring, in another k-space strategy, a second set of k-space lines based on the MR signals while the nuclear spins in the target area are in a steady-state or a mixed state of the transient state and the steady-state, and reconstructing the MRI image based on the first set of k-space lines and the second set of k-space lines.
