One kind of scatter correction method and apparatus based on cone-beam ct complementary grating

The present invention discloses a cone-beam CT scatter correction method and apparatus based on the complementary grating, by a simple, reliable raster scan and a small amount of calculation is complementary to, scatter correction to achieve projected image by the projection image can be reconstructed scatter correction the scatter correction slice images. Cone-beam CT scatter correction method based on the complementary grating of the present invention provides and apparatus suitable for the object of arbitrary complexity, method accuracy, reliability, stability, convenience, and can largely reduce the scatter adverse effect cone-beam CT imaging, thereby significantly improving the quality of a cone-beam CT slice images.