A patient receives an injection of 111108 Bq of 131I 30 of w

A patient receives an injection of 1.11×108 Bq of ¹³¹I, 30% of which goes to the thyroid, having a mass of 20 g. What is the average dose rate in the organ?

Solution

D=1.60×10–10AE Gy s–1

A=(1.11x108x(30/100))/20=1.665x106Bqg-1

E=0.192Mev

=1.60x10-10 (1.665)(0.192Mev)

= 51Gy s–1