Provided is a medical imaging apparatus. The medical imaging apparatus includes: a user interface configured to receive an input for setting a region of interest (ROI) in a first medical image and an input for setting first volume rendering properties for the ROI and second volume rendering properties for a remaining region of the first medical image other than the ROI; an image generator configured to generate a second medical image by performing volume rendering on the ROI and the remaining region other than the ROI based on the first and second volume rendering properties, respectively; and a display configured to display the second medical image.