tion image, |xSize| the number 
% of columns, |Nx|, |Ny|, |Nz| are dimensions of the estimated image, |FOVa_x| 
% is the size of the transaxial FOV, |axial_fov| is the size of the axial FOV, 
% |dPitch| is the crystal pitch (size), |sourceToDetector| is the distance from 
% source to the detector (mm), |sourceToCRot| the distance from source to the 
% center of rotation (mm), |horizontalOffset| is an optional value that can be 
% used to specify possible offset of the source from the center of rotation, |be