Attenuation Correction 1 Attenuation correction 1 Cardiac SPECT/CT 1 Cardiac single-photon emission computed tomography/computed tomography Cardiovascular disease 1 Convolution 1 Cross modality 1 Cross modality image registration 1 Deep learning 1 Diagnosis 1 Dual channel 1 Heart 1 Image registration 1 Images registration 1 Learning systems 1 Medical imaging 1 Myocardial perfusion 1 Particle beams 1 Perfusion imaging 1 Single photon emission computed tomography 1