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.[1] Its use is particularly common in the analysis of [18F]fluorodeoxyglucose ([18F]FDG) images of cancer patients.
As you know tums tablets are mainly made of calcium carbonate. To get calcium carbonate, mining or quarrying is required but pure calcium carbonate can be made from a pure quarried source such as marble, etc.
Calcium Carbonate Fights Heartburn. TUMS is the #1 antacid brand in the US. TUMS antacids have been trusted by millions for more than eight decades. Since its introduction in 1930, consumers have relied on the same active ingredient in TUMS antacid-calcium carbonate-for effective heartburn relief.