palladium Pd 103

Definition / meaning of palladium Pd 103

A radioisotope of the metal palladium used in brachytherapy implants or ‘seed’. With a half-life of 17 days, palladium 103 administered with brachytherapy allows continuous, tumor-site specific low-energy irradiation to the tumor cell population while sparing normal adjacent tissues from radiotoxicity.

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Source(s):

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

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