Dosage theories. Great hope has been expressed in some quarters that chemical, metabolic or biologic selectivity by specific tissues might sufficiently localize isotopes to make their use ...

Scientists are using isotopes to answer a surprising variety of questions about the world, according to University of ...

The CUBES-SIL lab has three magnetic sector, gas-source, isotope ratio mass spectrometers designed to measure the relative abundance of stable isotopes of light elements and molecules. These ...

Most methods involve the injection or ingestion of an isotope followed by counting over the suspicious area. 35 In general, slowly growing tumors show low uptakes; meningiomas are one exception to ...