yttrium-90 polycarbonate brachytherapy plaque

Definition / meaning of yttrium-90 polycarbonate brachytherapy plaque

A polycarbonate-based semicylindrical plaque impregnated with yttrium Y 90 with radioisotopic and antineoplastic activities. An yttrium-90 polycarbonate brachytherapy plaque may be applied to a tumor site with a special brachytherapy applicator for a predetermined interval of time, selectively delivering a cytotoxic dose of beta-emitting yttrium Y 90.

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Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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