PET/CT examination is more sensitive and accurate than other means, and has the value of early detection and diagnosis for many diseases (especially tumors and the most common heart and brain diseases); PET/CT examination can image the whole body at one time, which is convenient to find out whether there are dangerous microscopic lesions in the whole body; PET/CT can not only detect the primary lesions of tumors, but also early metastases. Early diagnosis can enable patients to receive truly early treatment and create conditions for complete cure. In foreign countries, PET is regarded as the best means of health check-ups, and regular PET/CT health examinations can detect some asymptomatic patients at an early stage. Generally speaking, it is appropriate to have a PET/CT examination once a year. It has been used abroad for more than 20 years and the number of tumor patients examined has been in the tens of thousands. Because of its definite value, high accuracy rate, and saving of overall medical expenses, it has entered the medical insurance program in many countries such as Europe and America. The tumors used include almost all kinds of tumors such as glioma, head and neck tumors, lung cancer, esophageal cancer, pancreatic cancer, liver metastases, lymphoma, colorectal cancer and so on. Because of its early detection of tumors, it has been used as one of the necessary items in medical examination for tumor screening abroad. PET/CT examination in China is not yet included in medical insurance, which is determined by the national situation of the country. Secondly, our government agencies do not weigh the pros and cons and do not see the long term effect of PET/CT on the overall medical cost reduction; again, clinicians know little about PET/CT and are too slow to update their medical knowledge so that they do not even know what PET/CT is. Will doctors who don’t even know what PET/CT is improve their next treatment plan based on this test? Absolutely not. Most clinicians will still make their own judgments based on the old CT, which is sad! I believe that in the near future, PET/CT will be included in our medical insurance.