Figure 3.

The comparison of receiver operating characteristic (ROC) analyses regarding favorable outcome as defined as a 90-day modified Rankin Scale ≤2 of collateral scores and computed tomography (CT) perfusion parameters is shown. The single-phase Menon score (sp Menon score; blue, solid line), cerebral blood volume (CBV)-Alberta Stroke Program Early CT Score (ASPECTS; red, dashed line), and the regional leptomeningeal collateral score (rLMC score; orange, solid line) discriminate best between favorable and unfavorable outcome. The scores assessed on single-phase CT angiography (spCTA; sp Menon and rLMC score) perform relevantly better than those derived from multi-phase CT angiography (multi-phase Menon score [mp Menon score), pink, solid line; and modified multi-phase Menon score [mod mp Menon score], violet, solid line). CBF, cerebral blood flow.