Dualpet Imaging System To Study

Positron emission tomography (PET) is a typical functional molecular imaging modality, which provides functional information of physiological activity by displaying the concentration distribution of radioisotope labeled chemical compounds or biological molecular which is pre-injected into the human body before imaging process. PET has recently enjoyed increasingly widespread use in oncology, brain and neuro science, drug development and metabolic activity research, especially in pre-clinical diagnosis. There is a growing appreciation for the value of the functional(as opposed to anatomical) information that is provided by PET and there are significant advancements taking place, both in the instrumentation for data collection, and in the computer methods for generating images from the measured data.This paper focuses on the area of functional molecular imaging and researches into positron emission imaging based on the PET.First, we design and construct a new type of y-ray detector using flat panel position sensitive photo multiplier tube (FP-PS-PMT), and then construct a dualPET system. The position and energy identification abilities of the detectors perform well, and also the resolution and sensitivity of dualPET system are relative good.A series of Planar Positron Imaging experiments based on dualPET system are carried out. The system also performs well in the application of the small animal imaging compared to microPET.Some 3-D imaging experiments based on the system are also carried out, some effort for image reconstruction through whole sinogram and sparse data has been made.