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 (PSA) is a protein produced by both cancerous (malignant) and noncancerous (benign) prostate tissue. PSA helps liquefy the semen. A small amount of PSA normally enters the bloodstream. Prostate cancer cells usually make more PSA than do benign cells, causing PSA levels in your blood to rise.But PSA levels can also be elevated in men with enlarged or inflamed prostate glands.Therefore, determining what a high PSA score means can be complicated.rostate cancer cells usually make more PSA than do benign cells, causing PSA levels in your blood to rise. But PSA levels can also be elevated in men with enlarged or inflamed prostate glands. Therefore, determining what a high PSA score means can be complicated.