Correction method and device for sawtooth artifacts in digital breast mammary tomographic reconstruction

The invention provides a correction method and a correction device for sawtooth artifacts in digital breast mammary tomographic reconstruction. The method comprises the following steps: calculating the mapping positions of the edges of a detector in reconstruction images of corresponding reconstruction layers in projected images in various angles; determining the intersection points of the edges of the mammary image region and the mapping positions and the position information of the intersection points in the reconstruction images of the reconstruction layers; and based on the intersection points and malposition information corresponding to the intersection points, removing the sawtooth artifacts of the edges of the detector in the mapping position of the reconstruction images in the projected images in various angles in the mammary image region, wherein the malposition information corresponding to the intersection points refers to the shift of the sharp end of the sawtooth artifacts corresponding to the intersection points relative to the intersection points in the horizontal direction.