Reversible Cerebral Vasoconstriction Syndromes (RCVS)
Reversible Cerebral Vasoconstriction Syndromes (RCVS)
Reversible Cerebral Vasoconstriction Syndromes (RCVS)
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A B<br />
C<br />
(A) Headframe used for bedside TCD examination.<br />
Breath Holding Index<br />
%(V apnea-V baseline)<br />
V baseline x t apnea<br />
Normal = 1.2 ± 0.6<br />
(B) Representative CT-angiogram showing multifocal segmental stenosis<br />
(“beading”) of the bilateral middle cerebral arteries, basilar, posterior<br />
cerebral, and superior cerebellar arteries.<br />
(C) TCD spectrum showing elevated mean flow velocity in the left MCA.
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