The present invention relates to a CT scan method, and more particularly, to a CT image analysis method using a 3-axis scan principle capable of accurately interpreting a gingival tissue CT image obtained by scanning a gum and a gingival bone as targets using the 3-axis scanning principle. The method according to the present invention includes the steps of: firstly scanning the gum after injecting contrast media into the gum secondly scanning the gum with an energy level which is different from the energy level of the first scanning step and comparing the attenuation difference of materials according to the energy levels.COPYRIGHT KIPO 2017본 발명은 CT촬영방법에 관한 것으로, 보다 구체적으로는 3축 스캔 원리를 이용하여 잇몸 및 잇몸뼈를 타겟으로 촬영된 잇몸조직 CT 영상을 정확하게 해석할 수 있는 3축 스캔 원리를 이용한 CT 영상 해석방법에 관한 것이다.
