Positron Emission Tomography (PET) Scanners Market, By Product Type (Full Ring PET Scanner, Partial Ring PET Scanner), By Application (Oncology, Cardiology, Neurology, Others), By Detector Type (Bismuth Germanium Oxide, Lutetium Oxyorthosilicate, Gadolinium Oxyorthosilicate, Lutetium Fine Silicate, Lutetium Yttrium Orthosilicate), By End User (Hospitals, Diagnostic Imaging Centers, Academic & Research Institutes, Others), By Geography (North America, Latin America, Europe, Asia Pacific, Middle East & Africa)