随着我国原子能事业的发展,我国于1983年已能批量生产高活度的医疗用~(60)钴密封源,改变了~(60)钴医用密封源长期依靠进口的被动局面,满足了国内~(60)钴远距治疗机的迫切需要,同时它将有利于我国放射治疗事业的进一步发展。我们对NS-2型~(60)钴远距治疗机先后装医用加拿大及国产~(60)钴密封源都进行了性 With the development of China’s atomic energy industry, China has been able to mass produce high-activity medical cobalt (60) cobalt sealed sources in 1983, which changed the passive situation of the long-term dependence of imports of cobalt (60) cobalt medical seal sources. The urgent need for a (60) cobalt teletherapy machine will also be beneficial to the further development of China’s radiotherapy business. We performed the NS-2 type 60 cobalt teletherapy machine with medical Canada and domestic ~60 cobalt sealed sources.