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日本科学技术厅,新技术事业团的稻场生物电子工程和日本东北大学医学部第二外科共同研究,在世界上首次用光CT对人体癌组织进行摄影,行且取得了成功。人体内各成份的波长不同,使光的透过率出不同,光CT就是利用了这种特性,对各种成份和组织进行断层摄影。由于光CT和放射线及放射物质无关,因此和X射线CT及阳电子放射断层扫描法相比,已作为一种更安全的断层摄影手段被人们所重视。但是,光CT由于:(1)生物体是一个显著的漫射体,透过内部的光经过多重漫射,使定量检测和时空分离成为一个难题;(2)生物体内部的光传播路径复杂,以投影定理为基础的通用的CT算法
Japan Science and Technology Agency, New Technology Group Rice Field Bioelectronics Engineering and the Second Surgery, Tohoku University School of Medicine jointly studied in the world for the first time by CT on human cancer tissue photography line and achieved success. Different wavelengths of the human body components, the light transmittance of different, light CT is the use of this feature, a variety of components and tissue tomography. Since CT has nothing to do with radiation and radioactive material, it has been valued as a safer tomography method than X-ray CT and positron emission tomography. However, the optical CT is a difficult problem due to the following reasons: (1) The living body is a significant diffuser, and the multiple diffusions through the internal light make the quantitative detection and space-time separation a difficult problem; (2) The light propagation path inside the living body is complex , A general CT algorithm based on projection theorem