Correlation between I-123 IMP, Tc-99m PAO SPECT and stable Xe-CT studies in patients with cerebral infarction

I-123 IMP, Tc-99m PAO SPECT and stable Xe-CT were performed within one week of each other in patients with cerebral infarction. We obtained the hypoperfusion ratio in these studies. The coefficient of correlation of the hypoperfusion ratio was 0.92 (p<0.001) between I-123 IMP and Tc-99m PAO, 0.87 (p<0.001) between Tc-99m PAO and Xe-CT, and 0.88 (p<0. 001) between I-123 IMP and Xe-CT.