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April 18, 2015

April 18, 2015

Posted by **Blaze** on Monday, May 2, 2011 at 9:18am.

A typical intravenous dose of I-125 for a thyroid diagnostic test is 100 u Ci. What is this dosage in megabecquerels (MBq)? (3.7 x 1010 Bq = 1 Ci)

my book solved it like this:

100 u Ci * 1Ci/1x10^6uCi * 3.7x10^10/1Ci * 1MBg/1 x 10^6 Bq = 3.7 MBq. My question is where did the 1 x 10^6 u Ci come from?

- chem -
**bobpursley**, Monday, May 2, 2011 at 10:05amexactly what does u mean? 1E-6. so the 1E6 times that makes the second term

(1Ci/1E6uCi) a unit factor for conversion.

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