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HI there I was searching on how to convert mci to sv and the only search result is from this foruns
A family member took iodine 131 for graves desease, and I was wondering how much radiation she took.
She took a 20 milicuries capsule and was told to not come in close proximity with other people for more than 2 hours, among other requirements.
Now I was wondering: what is the total amount of SV she got? What is the amount of SV someone else would get for each hour spent around her?
I've found this:
here: http://www.thyroidmanager.org/Chapter11/chapter11.htm
They were speaking about mice in the previous paragraphs, and it says "50g" for thyroid weight so maybe this doesn't work for humans, either way I don't know how to use the formula
A family member took iodine 131 for graves desease, and I was wondering how much radiation she took.
She took a 20 milicuries capsule and was told to not come in close proximity with other people for more than 2 hours, among other requirements.
Now I was wondering: what is the total amount of SV she got? What is the amount of SV someone else would get for each hour spent around her?
I've found this:
The radiation received by the thyroid and gonads during 131I therapy of thyrotoxicosis can be estimated from the following formula:
Total beta radiation dose = 73.8 x concentration of 131I in the tissue ('Ci/g) x average beta ray energy (0.19 meV) x effective isotope half-life
For illustration, we can assume a gland weight of 50 g, an uptake of 50% at 24 hours, a peak level of circulating protein-bound iodide (PB 131I) of 1% dose/liter, an administered dose of 5 mCi, a thyroidal iodide biologic half-life of 6 days, and a gamma dose of about 10% of that from beta rays. On this basis, the thyroid receives almost 4,100 rads, or roughly 1,600 rads/mCi retained. The gonadal dose, being about one-half the body dose, would approximate 2 rads, or roughly 0.4 rads/mCi administered.
here: http://www.thyroidmanager.org/Chapter11/chapter11.htm
They were speaking about mice in the previous paragraphs, and it says "50g" for thyroid weight so maybe this doesn't work for humans, either way I don't know how to use the formula
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