Standardized uptake value. The standardized uptake value (SUV) is a nuclear medicine term, used in positron emission tomography (PET) as well as in modern calibrated Single Photon Emission Tomography (SPECT) imaging for a (semi)quantitative analysis. Its use is particularly common in the analysis of F]fluorodeoxyglucose (F]FDG) images of cancer patients.
1). tumor-specific antigen. tumor-specific antigen (TSA) any cell-surface antigen of a tumor that does not occur on normal cells of the same origin. V antigen (Vi antigen) an antigen contained in the sheath of a bacterium, as Salmonella typhosa (the typhoid bacillus), and thought to contribute to its virulence.. any of several antigens, coded for by the viral genome, associated with transformation of infected cells by certain DNA tumor viruses. Called also tumor antigen. 2. an antigen present on human erythrocytes that is exposed by treatment with neuraminidase or contact with certain bacteria.
Prostate specific antigen, or PSA is a protein produced by the prostate that is found in semen. Measuring PSA levels is an important component to detecting possible signs of prostate cancer. High PSA levels in your blood could be a warning sign of an issue with your prostate.