Table 1: Summary of MARS spectral CT scanner experimental setup.


Scan typeContinuous
Tube voltage118 kVp
Tube current12 µA
Exposure time300 ms
Sample diameter38 mm
Energy (CSM)18, 30, 45, and 75 keV
Circular projections720 over 360°
Flat fields720
Voxel size1 × 1 × 1 mm3
SDD, SOD250 mm, 200 mm
Filtration2 mm Al + 1.8 mm Al intrinsic

SDD: source-to-detector distance; SOD: source-to-object distance.