Because a full 2D projection data of 3D object is gotten by scanning only one time, cone-beam 3D CT has become one of the most active parts in the recent international CT research.

• 锥束三维CT以其一次扫描就能获得被测物体整个二维投影的优势，已成为当今国际上CT领域中最活跃的前沿研究课题之一。