Low-energy brachytherapy sources

Details Low-energy brachytherapy sources Low-energy brachytherapy sources

A - Human Necessities

61

N

A61N 5/00 (2006.01) A61N 5/10 (2006.01)

Patent

CA 2358559

A radioactive implant characterized by a biological effectiveness comparable to that of palladium-103 and, simultaneously, by a half-life of the order of that of iodine-125. More specifically, the present invention provides a radioactive implant having improved biological effectiveness, by lowering the average energy of the photon spectrum of a relatively long half-life radioisotope element using x-ray fluorescence. Selection of a fluorescent material within elements having an atomic number between 39 and 45, preferably between 40 and 42, for surrounding a radioactive inner core comprising the radioisotope element, is described.

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