Iodine measurement in porous matrices based on calcium phosphate compounds

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Abstract

Porous ceramic materials based on calcium phosphate compounds (CFC) have been studied and developed for several biomedical applications such as implants, controlled drug delivery, and radioactive sources for brachytherapy. Two kinds of hydroxyapatite (HAp) powders and their ceramic bodies were characterized. In this study, non-radioactive iodine was incorporated in two types of biodegradable hydroxyapatite-based porous matrices (HA and HACL). The results reveal that both systems present a high capacity of incorporating iodine. The quantity of incorporated iodine was measured by neutron activation analysis (NAA). The porous ceramic matrices based on hydroxyapatite demonstrated a great potential for uses in low dose rate (LDR) brachytherapy.

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