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Published on: June 18, 2021
Transient reduction in venous susceptibility during posterior reversible encephalopathy syndrome
Morgan Ollivier1, Emmanuelle Wanono2, Delphine Leclercq3
1Department of Radiology, University Hospital Center, Hôpital de la Cavale-Blanche, F-29609 Brest Cedex, France; AP-HP, Pitié-Salpétrière Hospital, Department of Functional and Diagnostic Neuroradiology, F-75013 Paris, France.
Abstract:
We report a case of posterior reversible encephalopathy syndrome (PRES) in which followed-up MRI demonstrated a transient reduction in venous signal on initial SWAN images. The progressive normalization of venous signal on D10 and D40 imaging paralleled the progressive decrease of hyperperfusion on CBF images. Decreased venous susceptibility has never been reported in PRES; it relates most likely to a transient BOLD effect induced by brain hyperperfusion.
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