Process for depositing i-125 onto a substrate

Details Process for depositing i-125 onto a substrate Process for depositing i-125 onto a substrate

G - Physics

21

G

167/101, 167/47,

G21G 4/08 (2006.01) A61K 49/00 (2006.01) C23C 16/22 (2006.01) A61K 43/00 (1990.01)

Patent

CA 1327920

Abstract The invention relates to a process for depositing I-125 on a substrate which comprises contacting a predetermined surface area of substrate with Xe-125 gas, whereby the Xe-125 decays to I-125 and the I-125 in turn deposits as a solid on the surface of the substrate, the contact being for a time sufficient to deposit at least about 1 microcurie of I-125. I-125 is thereby deposited in a relatively uniform amount over the surface area of the substrate. The substrate is then assayed to determine how much I-125 has been deposited. The substrate is then divided into pieces of measured surface area, each piece therefore containing a measured amount of deposited I-125, and each piece can then be used in the manufacture of an I-125 source.

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