Hypoperfusion intensity ratio correlates with angiographic collaterals in acute ischaemic stroke with M1 occlusion.
Adrien GuenegoRobert FahedG W AlbersG KuraitisE S SussmanB W MartinDavid G MarcellusJ-M OlivotM P MarksM G LansbergM WintermarkJ J HeitPublished in: European journal of neurology (2020)
The HIR is a robust indicator of angiographic collaterals and might be used as a surrogate of collateral assessment in patients undergoing magnetic resonance imaging. HIR <0.4 best predicted good DSA collaterals.