Medical image registration using unsupervised deep neural network: A scoping literature review

aDepartment of Medical Physics and Engineering, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran. bDepartment of Radiation Oncology, University of Pittsburgh School of Medicine and UPMC Hillman Cancer Center, Pittsburgh, PA, USA. cDepartment of Computer Engineering and IT, Shiraz University of Technology, Shiraz, Iran. dIonizing and Non-Ionizing Radiation Protection Research Center, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran. , eDepartment of Medical Informatics, Mashhad University of Medical Science, Mashhad, Iran. fResearch Center for Neuromodulation and Pain, Shiraz University of Medical Sciences, Shiraz, Iran.