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Methods and measurements in radiation synovectomy with 90Y of knee joint dosimetry

Kempińska M.

Nukleonika

2008

Vol. 53, suppl. 1

39-43

Radioisotope synovectomy is based upon an yttrium-90 colloid injected into the knee joint (the usual injected activity ranges from 111 MBq to 222 MBq per joint). Execution of the procedure needs participation of a nuclear medicine specialist as well as an orthopedist or a rheumatologist and a technologist who prepares radiopharmaceuticals. All of these participants are exposed to ionizing radiation. The ionization doses for patients and personnel are dependent not only on the activity injected, but also on the method and process of injection as well as the radioactivity measurement procedure used. In the experiments performed, a significant influence of the biodistribution of the radioisotopic substance on the exposure results has been observed.