Biological half-life definition
WebApr 11, 2024 · half-life in British English. noun. 1. the time taken for half of the atoms in a radioactive material to undergo decay. Symbol: τ1/2. 2. the time required for half of a quantity of radioactive material absorbed by a living tissue or organism to be naturally eliminated ( biological half-life) or removed by both elimination and decay ( effective ... WebEffective-half life formula. The effective half-life is the biological excretion along with the radioactive decay after a radiopharmaceutical enters a body. The effective half-life can be represented as: 1 T E = 1 T B + 1 T p. T E = Effective Half-life. T B = Biological Half-life. T P = Physical Half-life. Rearranging the above yields: T E = T ...
Biological half-life definition
Did you know?
WebAug 8, 2024 · We can determine the amount of a radioactive isotope remaining after a given number half-lives by using the following expression: amount remaining = initial amount × (1 2)n. where n is the number of half-lives. This expression works even if the number of half-lives is not a whole number. Example 11.5.1: Fluorine-20. Webbiological half-life. (ˌbaɪəˈlɒdʒɪkəl ˈhɑːflaɪf ) noun. the time required for half of a quantity of radioactive material absorbed by a living tissue or organism to be naturally eliminated. …
WebDefine Halflife. Halflife synonyms, Halflife pronunciation, Halflife translation, English dictionary definition of Halflife. n. 1. Physics The time required for half the nuclei in a sample of a specific isotopic species to undergo radioactive decay. ... (biological half-life) or removed by both elimination and decay (effective half-life ... WebOct 31, 2016 · The biological half-life of a drug is an estimate of the time it takes for the concentration or amount in the body of that drug to be reduced by exactly one half …
WebUniversity of Nottingham Webhalf-life: [ haf´līf″ ] the time required for the decay of half of a sample of particles of a radionuclide or elementary particle; see also radioactivity . Symbol t ½ or T ½ .
WebApr 8, 2024 · noun. variants or biologic half-life. : the time that a living body requires to eliminate one half the quantity of an administered substance (as a radioisotope) through its normal channels of elimination. The meaning of BIOLOGICAL OXYGEN DEMAND is biochemical oxygen …
WebAug 28, 2024 · In pharmacology, the time it takes for a drug to decrease by half its plasma (blood) concentration is called its half-life (t1⁄2). (Specifying that we're talking … shumaila east hamWebhalf-life, in radioactivity, the interval of time required for one-half of the atomic nuclei of a radioactive sample to decay (change spontaneously into other nuclear species by … shumail syed mdWebThis short biological half-life indicates that this 20% portion of the total fluorine-18 tracer activity is eliminated renally much more quickly than the isotope itself can decay. ... Still, this half life is sufficiently long to allow shipping the compound to remote PET scanning facilities, in contrast to other medical radioisotopes like ... shumake architectureBiological half-life (also known as elimination half-life, pharmacologic half-life) is the time taken for concentration of a biological substance (such as a medication) to decrease from its maximum concentration (Cmax) to half of Cmax in the blood plasma, and is denoted by the abbreviation . This is used to measure the removal of things such as metabolites, drugs, and signalling molecules from the body. Typically, the biological half-life refers to the body's natural cleansing through th… shumakedesigns.comWebDefine half-life. half-life synonyms, half-life pronunciation, half-life translation, English dictionary definition of half-life. n. 1. Physics The time required for half the nuclei in a sample of a specific isotopic species to undergo radioactive decay. shumake electricWebFeb 27, 2024 · Definition. noun, plural: half-lives. (1) Biological half-life, i.e. the period in which the amount of substance inside the living organism is metabolized and eliminated … the outer oneWebDefinition The half-life is defined as the time elapsed when the intensity of the radia-tion is reduced to one half of its original value. 36 Figure 3.1. The radiation from a radioactive source decreases with time as shown. ... The biological half-life is rather uncertain as compared to the exact value of the physical half-life. the outer part of a flower consisting