Method of fabricating indium-111 radioactive isotope

A method of fabricating an indium(In)-111 radioactive isotope, comprising the steps of:

• (a) admixing a first bromic acid solution having a molar concentration of 8N with a target having a surface of cadmium(Cd)-112 in a container, wherein said target having a surface of Cd-112 is proton irradiated to produce a proton irradiated target;
• placing said proton irradiated target onto a heating plate which elevates temperature and compresses the proton irradiated target between the heating plate and a pressing unit, all arranged in the container, so as to be dissolved to obtain a solution of In-111 and Cd-112;
• (b) applying said solution of In-111 and Cd-112 to an ion exchange resin, wherein said In-111 is absorbed onto said resin and said Cd-112 flows through and is held in a recycling tank;
• (c) applying a second 8N bromic acid solution to said ion exchange resin to wash out In-111 and then drain a waste liquid into a waste tank;
• (d) applying a third 2N bromic acid solution to said ion exchange resin to desorb In-111 and collecting the flowthrough to obtain an In-111 semi-product liquid;
• (e) drying said In-111 semi-product liquid to obtain a product of In-111 radioactive isotope;
• and
• (f) coordinating the product of In-111 radioactive isotope with a 0.01N hydrochloric acid solution to be filtered.