Functional image on glucose metabolism in brain using PET with short time scan

Dynamic scan in PET has powerful capability to visualize various functionalities in a living tissue. But a dynamic scan requires long scan duration, and it is not practical for routine use. In this study, a shortened scan protocol is investigated in case of imaging of glucose metabolism in brain using /sup 18/F-FDG. In ordinary protocol of dynamic PET scan, more than 45 minutes is required. It is found that the first 30 minutes after FDG injection is enough to form a parametric image on glucose metabolism if a statistical clustering algorithm is incorporate to composed the parametric images.