PET-CT Pancreatic Head Metabolic Enhancement SUV 4.0 results in a higher than normal value. Normal PET-CT SUV values are usually less than 2.0.The greater the value of PET-CT SUV, the greater the ability of the tumor to uptake the imaging agent. A PET-CT SUV value of >2.5 indicates a high likelihood of malignant tumor. Therefore, SUV>2.5 is often used as a criterion for diagnosing malignant tumors in clinical practice, and benign tumors are considered when the SUV is lower than 2.5 and higher than 2.0. In addition, the relationship between SUV value and prognosis is also very large, studies show that when the SUV<10 of primary foci or metastatic foci, the prognosis is relatively good, and the survival rate is relatively high. If SUV>10, the prognosis is poorer, but it does not mean that a high SUV value means that there is a tumor, for example, tuberculosis foci, inflammatory tissues, fungal infections and so on may also lead to an increase in SUV value. If the patient’s PET-CT SUV results are abnormal, it is recommended to go to a regular hospital in time, after clarifying the cause of the disease, under the guidance of the doctor for targeted treatment or therapy.