Question

A typical amount of 99mtc injected for medical imaging is 15.0mci. convert this to decays per second, also called becquerels (bq, the si unit of activity.\

Answer 1

We are asked in the problem to convert teh unit mci or millicurie to another unit of radioactivity, becquerel. The conversion to be used in this case is 1 millicurie [mCi] = 37,000,000 becquerel [Bq] .The problem gives 15 mCi which when multiplied to 37,000,000 is equal to 5,550,000,000 bQ

Answer 2

Answer: $0.055\times 10^{10}$ Bq

Explanation:

Radioactivity is the phenomenon in which a less stable nuclei decomposes to a stable nuclei by releasing some radiations or particles like alpha, beta particles or gamma-radiations.

Radioactivity is measured in units of curie (Ci) or becqerels (bq).

1 millicurie = $10^{-3}$ Curie

Thus 15 millicurie = $\frac{10^{-3}}{1}\times 15=0.015$ Curie

1 Curie is equal to $3.7\times 10^{10}$ Bq

0.015 Curie = $\frac{3.7\times 10^{10}}{1}\times 0.015=0.055\times 10^{10}$ Bq