Last edit by Alaric Steinmetz on
The phenomenon of a Flow Void Signal can be observed in MRI imaging and manifests as a signal loss on MRI due to the flow velocity of fluids, such as Cerebrospinal fluid or blood[^1].
For example, in Aqueductal stenosis, a loss of the Flow Void Signal occurs due to the absence of cerebrospinal fluid flow.
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Article created on · Alaric Steinmetz
Flow void signal on MRI
Axial T2 MRI image. A flow void signal is seen in the aqueduct (white arrow). The CSF in the cisterns is hyperintense (curved black arrow). Blood flow in the vein (straight black arrow) also appears dark with a flow void signal. Figure adapted from Sherman et al.