10 CFR 35.433, Decay of Strontium-90 Sources for Ophthalmic Treatments
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Decay of strontium-90 sources for ophthalmic treatments
a
(a) Only an authorized medical physicist shall calculate the activity of each strontium-90 source that is used to determine the treatment times for ophthalmic treatments. The decay must be based on the activity determined under § 35.432.
b
(b) A licensee shall retain a record of the activity of each strontium-90 source in accordance with § 35.2433.
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