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. 2019 May 13;92(1101):20181027. doi: 10.1259/bjr.20181027

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© 2019 The Authors. Published by the British Institute of Radiology

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Figure 5. — (A) Typical features of a positive amyloid PET scan - “tree-in-bloom” sign with loss of cerebral grey:white matter differentiation (GWMD) indicating a positive scan.¹⁴ (B) “Branching Tree” sign with good GWMD similar to cerebellum indicating a negative amyloid PET scan.¹⁴