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. 2019 Dec 31;18:1536012119894087. doi: 10.1177/1536012119894087

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© The Author(s) 2019

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 3. — Representative cases. A, T1-weighted MRI shows a low-intensity lesion in the right frontal lobe. B, Fluid-attenuated inversion-recovery MRI outlines the margin of the lesion. C, ¹¹C-methionine PET shows weak accumulation in the lesion with SUVmax of 1.25 and TBRmean of 0.77. D, Surgery confirms the diagnosis of IDH1 mutated astrocytoma was confirmed. E, T1-weighted MRI shows a low-intensity lesion in the right frontal lobe. F, Fluid-attenuated inversion-recovery MRI outlines the margin of the lesion. G, ¹¹C-MET PET shows strong accumulation in the lesion, with SUVmax of 8.45 and TBRmean of 3.25. H, Surgery confirms the diagnosis of IDH1 wild-type anaplastic astrocytoma was confirmed. ¹¹C-MET PET indicates ¹¹C-methionine positron emission tomography; IDH1, isocitrate dehydrogenase 1; MRI, magnetic resonance imaging; SUVmax, maximum standardized uptake; TBRmean, mean tumor-to-background ratio.