Abstract
The time it takes for a substance to lose half of its pharmacologic, physiologic, or radiologic presence. When time behavior is proportional to exp(−λt), the half-life is related to the decay constant λ as 0.6931/λ. See also biological half-life, effective half-life, and mean life.
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© 2012 Springer-Verlag Berlin Heidelberg
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Thie, J.A. (2012). H. In: Nuclear Medicine Imaging: An Encyclopedic Dictionary. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-25035-4_8
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DOI: https://doi.org/10.1007/978-3-642-25035-4_8
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