The ridioisotope iodine - 131 (half-life = 8 days) is received from a medical supplier in a solution such that 0.5 cc of the solution has enough activity for injection for a certain organ scan at the time of supply. If it is impractical to use more than 8 cc of the solution per scan, what is the useful life of the solution?
T1/2 = half life = 8 days
= decay constant
decay constant is given as
= 0.693/T1/2
= 0.693/8 = 0.087
N = 0.5
No = 8
t = useful life
using the equation
N = No e-t
0.5 = 8 e-0.087t
t = 31.86 days
The ridioisotope iodine - 131 (half-life = 8 days) is received from a medical supplier in...
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Some Radioactive isotopes Useful in Medical Imaging Mode of Isotope Decay Half-life Use in Medical Imaging 8 MP EC. Carbon-11 Fluorine-18 Phosphorus 32 Chromium-51 Tron-59 Gallam-67 Selenium-7 Krypton 81m Strontium-51 Technetium-99 Iodine 131 Mercury-197 Thallium-201 20.3 m 109 m 14.30 27.70 45 78.3 h 118d 1335 EC FC Brain canto trace Klucose metabolism Brain can to trace glucose metabolism Detect eye tumor Diagnose albinism, image the wpleen and gastrointestinal tract Bone marrow function, diagnos is Whole body scan forumo Pancreas...
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