1 Department of Applied Physics, University of Eastern Finland, Kuopio, Finland; Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland. Electronic address: jaakko.sarin@uef.fi.
2 Department of Equine Sciences, Utrecht University, Utrecht, The Netherlands. Electronic address: H.Brommer@uu.nl.
3 Veterinary Teaching Hospital, School of Veterinary Medicine, University of Helsinki, Helsinki, Finland. Electronic address: darguelles@uco.es.
4 Department of Applied Physics, University of Eastern Finland, Kuopio, Finland; Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland. Electronic address: Pia.Puhakka@essote.fi.
5 Department of Applied Physics, University of Eastern Finland, Kuopio, Finland. Electronic address: satu.inkinen@uef.fi.
6 Department of Applied Physics, University of Eastern Finland, Kuopio, Finland; Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland; Department of Electrical and Computer Engineering, Elizade University, Ondo, Nigeria. Electronic address: isaac.afara@uef.fi.
7 Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland; Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland; Department of Diagnostic Radiology, Oulu University Hospital, Oulu, Finland. Electronic address: simo.saarakkala@oulu.fi.
8 Department of Applied Physics, University of Eastern Finland, Kuopio, Finland; Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland. Electronic address: juha.toyras@uef.fi.