The petct SUV value is a measure of the tumor’s ability to take up the tracer. petct exams are preceded by an injection of a contrast agent, a sugar-like contrast agent that is involved in the body’s metabolism, and the tumor lesion is highly metabolized, so the contrast agent will be highly aggregated at the lesion and displayed by the petct exam. the SUV value is a unit that measures how much of the tracer the tumor takes up.
The larger the petet SUV value, the greater the ability of the tumor to take up the imaging agent, and a normal SUV value is generally less than 2.0. When the petct SUV value >2.5, the likelihood of having a malignant tumor is high, so in general, experts use an SUV >2.5 as a criterion for diagnosing a malignant tumor, and anything below 2.5 and above 2.0 is to be consider benign tumors.
Also, the prognosis is very much related to the SUV value, and studies have shown that the prognosis is relatively good and the survival rate is higher for primary or metastatic SUV<10, and worse for SUV>10.
However, a high SUV value does not mean that you have a tumor; for example, inflammatory tissue, tuberculosis foci, and fungal infections can also have elevated SUV values, and specialists will make an accurate differential diagnosis of this.
SUV values are usually below 2.0, and if they are outside of the normal SUV range, consider the possibility of a tumor.