1. A method of generating a scatter-corrected X-ray image, the method comprising: obtaining a two-dimensional (2D) X-ray image; generating projection image data from the 2D X-ray image; and iteratively reconstructing the 2D X-ray image to generate a scatter-corrected X-ray image based upon the generated projection image data, wherein iteratively reconstructing the 2D X-ray image comprises using a multiplicative algebraic reconstruction (MART) technique.