A High CSF Signal on FLAIR: It Is Not Always Blood.
Neuroradiol J 2010;
23:389-92. [PMID:
24148624 DOI:
10.1177/197140091002300401]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2010] [Accepted: 05/29/2010] [Indexed: 11/15/2022] Open
Abstract
We describe a patient with progressive neurologic deficit due to middle cerebral branch occlusion. Temporary partial balloon occlusion of the abdominal aorta led to an increased signal in the subarachnoid space on fluid-attenuated inversion recovery images with no evidence of subarachnoid hemorrhage. After spontaneous recanalization, the increased signal of the subarachnoid space returned to normal. We assume that signal changes in the subarachnoid space were due to a temporary increase in blood volume in the superficial brain vessels.
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