1.Tomography imaging of whole body tumor: tumor screening, tumor characterization and differential diagnosis, tumor staging, detection of unknown primary foci, monitoring and prediction of efficacy, tumor recurrence detection and re-staging, precise location of biological target areas for radiotherapy, etc. 2.Myocardial metabolic imaging: diagnosis of coronary heart disease, determine and distinguish necrotic myocardium from reversible ischemic myocardium, is the most accurate method to determine the activity of myocardial cells, known as the “gold standard”. 3.Brain metabolic imaging: diagnosis and classification of primary brain tumors, precise localization of brain tumors, localization of epilepsy, early diagnosis of Parkinson’s disease and senile dementia, etc. 4.Whole body tomography (high-end examination): early detection and early diagnosis of serious life-threatening tumors, heart, brain and other diseases.