Prior Image Guided Undersampled Dual Energy Reconstruction with Piecewise Polynomial Function Constraint

Table 1

The scan geometry for the cylinder phantom.

Parameter	Value
Source to center distance	75 cm
Source to detector distance	105 cm
Total width of detector	9.6 cm
Number of detector bins	512
Reconstruction resolution	256×256
Reconstruction size	6.4 cm × 6.4 cm