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. Author manuscript; available in PMC: 2024 Feb 29.
Published in final edited form as: Neuroimaging Clin N Am. 2023 Feb;33(1):11–41. doi: 10.1016/j.nic.2022.07.001

Fig. 22.

Fig. 22.

Subdural empyema in a patient with bacterial meningitis and cerebritis. A crescentic subdural collection in the right middle cranial fossa (arrows) is FLAIR hyperintense (A) with enhancement (B) and restricted diffusion on DWI (C) and ADC (D). In the left anterior convexity (arrows), a thin FLAIR hyperintense collection (E) with leptomeningeal enhancement (F) shows diffusion restriction on DWI (G) and ADC (H). Note also diffuse leptomeningitis (F) and frontal cerebritis, right worse than left (E–H).