The combination of baseline magnetic resonance perfusion-weighted imaging-derived tissue volume with severely prolonged arterial-tissue delay and diffusion-weighted imaging lesion volume is predictive of MCA-M1 recanalization in patients treated with endovascular thrombectomy.

only shows a nonsignificant trend to predict MCA M1 recanalization after thrombectomy (Fisher’s exact test, p = 0.111 in the whole cohort, p = 0.093 in the MERCI cohort) (Table 4 ); whereas the collateral grading alone, performed later during angiography, is able to accurately discriminate recanalizers from nonrecanalizers.

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A statistical trend was defined as p < 0.15.

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