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Abstract

Time for the amount of radioactivity in a living organism to be reduced to half of its value existing at an earlier initial time. The amount diminishes due to two concurrent processes: radioactive decay and clearance from the system. If just the former occurs, this effective half-life is independent of initial time and is equal to the isotope’s half-life. When there is biological clearance of a substance, there is also its associated half-life.

Keywords

Volume Curve Radioactive Decay Extraction Fraction Electron Volt Concurrent Process 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.University of TennesseeKnoxvilleUSA

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