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Figure 6 Concordance between ¹³N-ammonia and FDG uptake is demonstrated in this patient example. Matched transaxial tomograms are displayed for ¹³N-ammonia uptake and FDG uptake by PET, with corresponding end-diastolic and end-systolic MRI tomograms before (pre-) revascularization (on the left) and after (post-) revascularization (on the right). On the PET study, both ¹³N-ammonia and FDG uptake are severely reduced in the apical region (matched defect). Corresponding MRI tomograms reveal absent systolic wall thickening in the apical region before revascularization, which remains irreversible after revascularization.

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