STEREOTACTIC RADIOSURGERY
\stˌɛɹɪə͡ʊtˈaktɪk ɹˌe͡ɪdɪə͡ʊsˈɜːd͡ʒəɹi], \stˌɛɹɪəʊtˈaktɪk ɹˌeɪdɪəʊsˈɜːdʒəɹi], \s_t_ˌɛ_ɹ_ɪ__əʊ_t_ˈa_k_t_ɪ_k ɹ_ˌeɪ_d_ɪ__əʊ_s_ˈɜː_dʒ_ə_ɹ_i]\
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A stereotactic neurosurgery in which the usual rigid needles or probes are replaced with beams of ionizing radiation directed toward an intracranial target so as to achieve local tissue destruction. No skin incision or skull opening is required. It is performed with the "gamma knife", a self-contained unit with 201 cobalt-60 sources or with an isocentric linear accelerator (linac). (Goodman, M.L., Southern Medical Journal, vol. 83, May 1990, pp. 551-4)
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