Standardized Uptake Value

**Semantic type:** Quantitative Concept

**Definition:** An effectively dimensionless measure of regional tracer uptake calculated as the activity concentration within a 2D region of interest (ROI) or 3D volume of interest (VOI) measured on a PET image (nCi1mL) / [injected dose (nCi) / body weight (g)].

**Synonyms:** - Differential Absorption Ratio - Differential Uptake Ratio - Distribution Activity Ratio - SUV - SUV - Standard Uptake Value - Standard Uptake Value - Standardized Uptake Ratio - imaging suv - imaging_suv