Abstract
We evaluated the significance of redistribution in 123I-IMP SPECT study using PET. Twelve lesions in ten patients were selected. These lesions were classified into the following three groups; ischemia, infarction of subacute phase and infarction of chronic phase. All lesions with ischemia or subacute infarction showed good or moderate redistribution. Three of four lesions with chronic infarction showed no redistribution. The mean values of rCBF and rCMRO2 were highest in the lesions with good redistribution, but there was no differences in rOEF with the degree of redistribution. In conclusion, the tissue with good redistribution is not always viable and it was impossible to predict a region with increased rOEF by redistribution alone.
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