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  • Intracranial catheters designed for liquid brachytherapy treatment in the brain, usually in the cavity remaining after tumor resection. These catheters typically consist of a single-lumen radiopaque catheter with a double balloon at the distal tip and an infusion port in the proximal end that is fixed on top of the skull. A few days after surgery, the inner balloon is manually filled (typically using a prefilled syringe) with a radioactive liquid that irradiates the tissue surrounding the cavity; access to the outer safety balloon is possible if necessary. Both the catheter and the radioactive source are removed after several days (three to seven is typical) of continuous treatment. Liquid radioisotope brachytherapy intracranial catheters are used to treat brain tumors, especially when these tumors recur.
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