An apparatus for positioning radioactive source material in at least one hollow needle (16) implanted in the body of a patient (13), comprising a container (6) for one or more radioactive source assemblies (55); a transfer tube (14) having a first end connected to the container and a second end connected via a needle connector (15) to one or more implanted needles (16), and a mechanical drive (7) for selected delivery of a radioactive source assembly from the container (6) through the transfer tubes (9,14) to the implant needles (16). The apparatus also includes a patient belt (12) disposed on the body of the patient to be treated and adapted to retain the implant needles (16) in the body of the patient (13). The belt (12) can be provided with a number of transfer tubes (14) and a connector (11) to be linked to a multi-channel socket connector (10) for delivery of radioactive material to the patient.
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