作者Leni (喔…真不知该怎麽办)
看板BioMedInfo
标题[问题]请问放射元素半衰期的问题
时间Thu Oct 2 11:26:31 2008
最近在准备考试，有一题关於放射元素的问题，想请知道的人帮我解释
Thyroxine labeled with I131 is administered to a patient for the
purpose of imaging the thyroid gland. The radioactive half-life
of the isotope is 8 days. The biological half-life (the time required
for half of the compound to be eliminated from the body) is 2 days.
The time at which 3/4 of the original radioactivity will no longer
be detectable in the body is closest to?
答案是 3.2 days.
虽然有答案在手，但我还是不太了解怎麽计算。希望有人可以帮个忙，感恩~~
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