? Cerebral blood flow perfusion SPECT imaging with 99m Tc-ECD were studied in 48 patients of cerebral trauma

among them 41 cases also performed CT within 2 weeks of SPECT imaging. The results showed that the detection rate of SPECT and CT for mild

moderate and severe cerebral trauma were 60%（6/10）

90%（10/11）

100%（9/9） and 10%（1/10）

60%（6/10）

100%（9/9） respectively. Besides

detection rate of SPECT and CT in cerebral trauma symdrome and sequela groups were 80%

90% and 25%

71% respectively. Apparently

the sensitivity of SPECT was higher than CT but not the specificity. However

the more earlier the appearence of the lesion site

the more sites and extent of the lesion will be find in SPECT than CT. It was concluded that through the combined use of these two technologies

the pathophysiologic changes of cerebral trauma can be accurately reflected

their sensitivity and specificity further elevated

thereby have more significance for therapeutic guiding.