====== Relative cerebral blood volume ====== ====Importance==== Relative [[cerebral blood volume]] (rCBV) and [[hypoperfusion index ratio]] (HIR) may serve as markers of collateral circulation in [[acute ischemic stroke]] (AIS) patients prior to endovascular therapy ((Arenillas JF, Cortijo E, GarcĂ­a-Bermejo P, Levy EI, Jahan R, Goyal M, Saver JL, Albers GW. Relative cerebral blood volume is associated with collateral status and infarct growth in stroke patients in SWIFT PRIME. J Cereb Blood Flow Metab. 2017 Jan 1:271678X17740293. doi: 10.1177/0271678X17740293. [Epub ahead of print] PubMed PMID: 29135347. )). [[Dynamic susceptibility weighted contrast enhanced perfusion imaging]] ==== Relative cerebral blood volume from Dynamic susceptibility weighted contrast enhanced perfusion imaging ==== [[Relative cerebral blood volume from Dynamic susceptibility weighted contrast enhanced perfusion imaging]]