Research on ultra low-dose next-generation computed tomography

CT技术的最新发展使得能够生成高质量的3-D和4-D图像。然而，每次CT检查所需的患者剂量正在大幅增加。在本研究中，我们基于以下两个原则研究了新一代超低剂量CT的基本原理和应用。第一个原理被称为内部CT，其中X射线仅辐射到小的感兴趣区域，例如心脏或乳房。第二个原理称为稀疏视图CT，其中仅测量有限数量的投影。因此，我们建立了下一代CT的基础，并证明了他们的特点。

Recent developments in CT technology enabled generating high-quality 3-D and 4-D images. However, necessary patient dose per each CT examination is increasing very much. In this research, we investigated fundamentals and applications of ultra low-dose new-generation CT based on the following two principles. The first principle is called interior CT, in which x-rays are radiated only to small region-of-interests such as heart or breast. The second principle is called sparse-view CT, in which only a limited number of projections are measured. Consequently, we established fundamentals of the next-generation CT and demonstrated their feasibilities.