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. 2014 Sep 10;34(5):1273–1292. doi: 10.1148/rg.345140009

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2014 by the Radiological Society of North America, Inc.

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Figure 2a — (a–c) Normal findings in a patient undergoing evaluation for possible Alzheimer disease. Axial FDG PET images (a), semiquantitative three-dimensional (3D) stereotactic surface projection (SSP) FDG PET images (b), and Z-score images (c) show normal findings. (d–f) Abnormal findings in a patient with known Alzheimer disease and progressive verbal difficulties. Axial FDG PET images (d) demonstrate marked bilateral temporoparietal hypometabolism (arrows), a finding that is confirmed on semiquantitative 3D SSP FDG PET images (e) and Z-score images (f) (arrows). Prominent left frontal hypometabolism is also seen (arrowhead in f).