Global Positron Emission Tomography Market Assessment, By Product [Device, Platform/Service], By Detector [Silicon Photomultiplier, Digital Photon Counters, Lutetium Oxyorthosilicate, Lutetium Yttrium Orthosilicate, Others], By Application [Neurology, Oncology, Cardiovascular, Others], By End-user [Hospitals, Diagnostic and Imaging Clinics, Others], By Region, Opportunities and Forecast, 2017-2031F