Computing Reconstruction Kernels for Circular 3-D Cone Beam Tomography
Computing Reconstruction Kernels for Circular 3-D Cone Beam Tomography
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DOI:
10.1109/tmi.2008.922188
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发表时间:
2008-06
影响因子:
10.6
通讯作者:
A. Louis;T. Weber;D. Theis
中科院分区:
文献类型:
--
作者:
A. Louis;T. Weber;D. Theis
In this paper, we present techniques for deriving inversion algorithms in 3-D computer tomography. To this end, we introduce the mathematical model and apply a general strategy, the so-called approximate inverse, for deriving both exact and numerical inversion formulas. Using further approximations, we derive a 2-D shift-invariant filter for circular-orbit cone-beam imaging. Results from real data are presented.