An Efficient Estimation Method for Reducing the Axial Intensity Drop in Circular Cone-Beam CT

Table 2

Simulation parameters.

Source to detector distance (𝐷+𝐷𝑜𝑑)	700mm
Source to axis distance (𝐷)	350mm
Detector size	512×512
Detector element pitch	0.781mm
Full cone angle in the 𝑧 direction	32deg
Full fan angle in the 𝑥-𝑦 plane	32deg
Projection number of a full scan	800
Reconstructed volume	256×256×256
Reconstructed voxel size	0.781mm