1. A method of mapping image information of a target object onto an interface of the target object in magnetic resonance imaging (MRI), the method comprising: obtaining the image information of the target object in a predetermined direction from outside of the target object to inside of the target object; analyzing the obtained image information; extracting one piece of the obtained image information based on the analysis result; allotting the extracted image information onto the interface of the target object to adjust the interface in an MRI image of the target object; and generating and displaying the MRI image of the target object with the adjusted interface.