FDG-SPECT AND HIBERNATION - AN INTERIM RE VIEW

Aim: The present investigation demonstrates an intraindividual compari son of FDG-PET and FDG-SPECT. Material and Methods: Thirty patients wi th CHD and planed revascularisation underwent both modalities. Myocard ial perfusion was evaluated by Tc-99m-MIBI SPECT. The myocardium was d ivided into 25 segments and the results were compared by two experienc ed observers. Results: Segmental concordance of FDG-PET and -SPECT was 94.1%. PET indicated a higher percentage of hibernating myocardium (8 .9% vs. 5.7%) and a lower rate of matched defects (11.5% vs. 16.0%). I n 22 cases the need for revascularisation was assessed identically In the remaining 8 patients FDG-PET and FDG-SPECT required an interventio n in 6 and 2 cases, respectively. Conclusion: The results of FDG-PET a nd FDG-SPECT showed a high segmental concordance, but the individual a ssessment of hibernation worthwhile for revascularisation demonstrated important differences in patient management.