A reconstruction system includes a decomposer (204) configured to decompose at least two sets of projection data generated via kVp switching between at least two radiation source voltages. Each set corresponds to a different one of the at least two radiation source voltages. The system further includes a spectral channel (206) configured to process the at least two sets of projection data and generate spectral image data. The system further includes a non-spectral channel (208) configured to process the at least two sets of projection data and generate non-spectral image data for a predetermined reference kVp.