巨大长型物体的双直线扫描断层成像

Double Linear Scan Imaging for Large Longinh Object Tomography

本文从实际应用背景出发，对直线源轨迹的扇束重建公式进行了简单推导，给出了相应的计算机模拟结果。同时根据实际情况提出了双直线源轨迹的图像重建公式，最后将此算法推广到三维锥束图像重建，克服了传统三维图像重建中大锥角处误差很大的缺点。

An image reconstruction algorithm has been developed for fan-beam linear scan tomography.The described linear scan method is simple in mechanical structure and quite suitable for scanning very long and very large obj-ect such as rocket,and it can also be used for large angle cone-beam scan tomography.(