The completeness condition for 3d cone beam exact reconstruction is analysed and derived theoretically, and discussion about some source orbits follows.
本文从理论上分析推导了3d锥束精确重建的完全条件，并结合一些具体的源点轨迹进行了讨论。
2
Image reconstruction from spiral cone-beam data is practically advantageous, but it is mathematically complicated and technically challenging.
从螺旋锥束数据来重建图像有许多优点，但是这种成像方式在数学上比较复杂，技术实现也有相当的难度。
3
Using the present cone beamreconstruction formula for general trajectory, we have investigated the issue of detector efficiency for non-helical trajectory.