10 Radiation sources for medical purposes, especially for radiation therapy, for imaging purposes and for diagnostical purposes, namely, radioactive seeds, radioisotopes, reactor-produced radio isotopes, cyclotrons-produced radiation isotopes, naturally occurring isotopes, ring radioisotopes, artificially produced radio isotopes; cobalt-60, iodine-131, iridium-192, strontium-89, samarium-153, rhenium-186, boron-10, techneticum-99m, molybdenum-99, rubidium-82, lutetium-177, ytterbium-176, ytterbium-177, yttrium-90, bismuth-213, chromium-51, copper-64, dysprosium-165, erbium-169, holmium-166, iodine-125, iron-59, palladium-103, phosphorus-32, potassium-42, rhenium-188, selenium-75, sodium-24, xenon-133, ytterbium-169, carbon-11, cobalt-57, gallium-67, gallium-68, indium-111, iodine-123, iodine-124, thallium-201, thulium-170; radiation sources for implantation, namely, implantable radiation therapy devices consisting of radioactive seeds and a bioabsorbable carrier assembly; catheters; applicators for radiopharmaceuticals