Abstract: CLINICAL APPLICATION OF SPECT TO ISCHEMIC CEREBROVASCULAR DISEASES Wang Manqin; He Deqiang Li Chengqing; Xu Yaojun Liu Ping（Department of Nuclear Medicine, Dalin harbour Hospital, 116001）Jin Dequi; Qiu Shisheng; Wang Hui（Department of Physician, Dalin Harbour Hospital,116001）Xia Chongqi; Wang Xi'an;Jin Peiyong（Department of Visualization, Dalin Harbour Hospital, 116001）ABSTRACT 32 9 patients with ischemic cerebrovascular diseases are examined with~(99)Tc~m-ECD SPECT imag-ing. Among them，16 0 cases of cerebral infarction，12 0 cases of cerebral arteriosclerosis，30 casesof vertebrobasilar ischemia and l 9 cases of transient ischemic attack（TIA） are clinically confirmed.In the order of above cascs, the poqitive rate of SPECT imaging were 90．6％，8.2％， 86．7％and84．2％respectively. The overall po6itive rate is 89．4％（294/329）． However， the overall positiverate Qf X（T was 60．3％（135/224）． It is suggested that~(99)Tc~m-ECD SPECT cerebral perfusion imag-ing not only accurately reflects regiocal function ， metabolism and blood supply of the ischemicparts ， but also has important value for early diagnosis， evaluating the effect of therapy and prognosisjn ischemic cerebrovascular diseases.Key words brain ischemic cerebrovascular diseases radionuclidic imaging perfusion imag-ing