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Which of the following are true regarding the physical half-life of a radio pharmaceutical? a. It is the rate at which a radio pharmaceutical agent is physically eliminated from the body b. Body temperature must be taken into consideration when estimating the physical half-life of a radio pharmaceutical within a patient’s bodyc. It is used to calculate how much radio pharmaceutical agent to prepare depending on its time of use d. It differs according to the pharmaceutical agent used e. It increases when placed in an acidic solution |
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Answer» a. False. The physical half-life is the time taken for a radio pharmaceutical to decay to half its original value. b. False. The physical half-life is a fixed characteristic of the radio pharmaceutical and is unaffected by factors such as heat and chemical reactions. c. True. The exponential decay graph can be used to calculate how much activity should be prepared in order to use at a particular time later on. d. False. The physical half-life is dependent on the decay of the radio nuclide and is not influenced by the pharmaceutical agent used. e. False. |
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