By SEC Co.,Ltd
Linear diminution factor, a result of CT reconstruction, is the result gained by assumption of X-ray photon having single energy. But X-ray Photon generated in X-ray Tube has multiple energy not single energy. Discordance of assumption in this type of model is appeared as Beam Hardening Artifact in CT image. Every material absorbs Photon with high energy better than Photon with low energy. X-ray generated in X-ray Tube loses Photon a lot in low energy area and Photon in high energy area remains a lot when penetrating the material. As a result, X-ray Effective Energy increases. Beam Hardening phenomenon makes to have unequal CT number although it is single material in CT result image. We have our reward algorithm by continuously studying about Beam Hardening revising algorithm. Left image is the image before revision and right image is after revision.
