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**I-Seed** is a brand name for **IsoSeed I-125**, a radioactive seed containing iodine-125 (I-125) used for brachytherapy in the permanent treatment of localized prostate cancer. These small, implantable seeds deliver targeted low-dose radiation directly to the tumor site, minimizing exposure to surrounding healthy tissues. Produced by Eckert & Ziegler BEBIG with calibration traceable to NIST/PTB standards, they offer good visibility under X-ray, fluoroscopy, CT, MR, and ultrasound imaging. Available as sterile loose seeds or pre-loaded in Mick Magazines for precise delivery.[8]
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