span><span> is the distance from source to the detector (mm), </span><span style=' font-family: monospace;'>sourceToCRot</span><span> the distance from source to the center of rotation (mm), </span><span style=' font-family: monospace;'>horizontalOffset</span><span> is an optional value that can be used to specify possible offset of the source from the center of rotation, </span><span style=' font-family: monospace;'>bedOffset</span><span> is an optional value that describes the offsets of each bed position