PET-CT, whose full name is Positron Emission -X-ray Computed Tomography, is a non-invasive molecular imaging technology. It will PET (functional metabolic imaging) and CT (anatomical structure imaging) two advanced imaging technology organically combined together, synchronized to obtain the body’s physiological function and anatomical structure of the information, for the disease “positioning”, “qualitative”, It provides a strong technical guarantee for the “localization”, “qualitative”, “quantitative” and “regular” diagnosis of diseases. It is the most perfect and cutting-edge medical imaging product at present. Suzhou PET-CT Center, co-funded by the First Affiliated Hospital of Soochow University and Suzhou Municipal Hospital, introduces PET-CT (Discovery-STE 16) produced by General Electric Company of the United States and its supporting cyclotron, equipped with the most advanced and perfect software system. The machine scanning speed, high resolution, is currently the most advanced international functional molecular imaging equipment. The center has strong technical force and exquisite medical skills. The center has gathered a number of senior experts from the First Affiliated Hospital of Soochow University and Suzhou Municipal Hospital. The director of the center is a professor and doctoral supervisor of Soochow University, one of the first key medical talents in Jiangsu Province, a standing member of the Nuclear Medicine Branch of the Chinese Medical Association, the chairman of the Nuclear Medicine Branch of the Jiangsu Medical Association, and an editorial board member of the Chinese Journal of Nuclear Medicine. The center will be based on strong technical force, adhering to the “patient-centered” service concept, high-tech, high investment as a starting point, with first-class equipment, first-class technology, first-class service, first-class environment, first-class management to provide quality services for the general public. PET-CT Application Scope: (I) Health Checkup PET-CT examination is a high-end medical imaging technology with high sensitivity and good accuracy, which can detect tiny tumor foci in the budding state at an early stage, so as to achieve the purpose of early diagnosis and early treatment, and greatly improve the survival rate of tumor patients. Statistics at home and abroad show that the detection rate of malignant tumors in PET-CT examination of normal people is as high as about 1.7%. At the same time, it is also of great value in the early diagnosis of cardiovascular diseases and nervous system diseases. The routine health checkup can only make an approximate judgment on the health status of human body. Therefore, in developed countries in Europe and the United States, as well as in developed areas of China, PET-CT has been regarded as the best means of health checkup. Generally speaking, it is more appropriate to do PET-CT examination once a year. In general, people over 40 years old, with a family history of tumor, history of exposure to carcinogenic substances, and high-risk individuals with unexplained elevated serum tumor markers are more appropriate to undergo PET-CT health checkups on a regular basis. (ii) Tumor diagnosis PET-CT is suitable for differential diagnosis of most benign and malignant tumors, early diagnosis, staging and grading of tumors as well as evaluation of systemic conditions; evaluation of the efficacy of various means of treatments before and after the operation (including: identification of tumor residuals and scar tissues after surgery, changes in tumor foci before and after radiotherapy and chemotherapy, and identification of radiation pneumonitis and recurrence of tumors, etc.) and search for tumor foci and metastasis. Systemic monitoring of tumor foci; providing reliable basis for guiding the diagnosis of tissue localization and choosing the correct treatment plan; determining the biological target area to guide the precise treatment of linear gas pedal, gamma knife and other radiotherapy means. (iii) Cardiovascular disease 16-layer CT combined with PET functional metabolic imaging, nearly perfect realization of the heart structure, function, metabolism of the synchronous display and evaluation of the purpose. It can be applied to: early diagnosis of coronary heart disease and evaluation of myocardial blood supply; identification of active and inactive myocardium in myocardial infarction area; evaluation of myocardial perfusion, metabolism and functional recovery after coronary artery blood flow reconstruction; diagnosis of unstable angina pectoris and evaluation of myocardial damage in cardiomyopathy. (d) Neurological diseases PET-CT can complete the preoperative localization of epilepsy patients; early diagnosis of Alzheimer’s disease (Alzheimer’s disease), Parkinson’s disease and judgment of the efficacy of treatment; evaluation of psychiatric disorders; evaluation of drug addiction or judgment of the efficacy of drug treatment; evaluation of the metabolic status of the brain after traumatic brain injury; judgment of other cerebral metabolic disorders (CO poisoning, etc.) and cerebral ischemic disease; and evaluation of the cerebral metabolic status. etc.) and early diagnosis of cerebral ischemic diseases. The introduction of cerebral oxygen metabolism, receptors, amino acid metabolism, choline metabolism imaging and other means will greatly expand the application of PET-CT in neurological diseases.