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. 2020 Jan 9;40(1):200–222. doi: 10.1148/rg.2020190070

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2020 by the Radiological Society of North America, Inc.

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Figure 17c. — Dementia with Lewy bodies. (a, b) Sagittal (a) and axial (b) MR images show generalized volume loss with significant occipital lobe involvement (arrow in a), which is an atypical finding for Alzheimer disease. (c) Sagittal ¹⁸F-FDG PET image shows corresponding decreased activity (arrow) in the occipital region. (d) Axial ¹⁸F-FDG PET image shows relative sparing of the posterior cingulate gyrus (arrow). Involvement of the occipital lobes and sparing of the posterior cingulate is a characteristic finding of DLB.