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Figure 1: Axial noncontrast computed tomography sections (a-c) show a large acute infarct in the left middle cerebral artery territory (arrows). Alberta stroke programme early computed tomographic score was 3. Computed tomography angiography axial (d and e) and coronal (f) sections show abrupt cutoff of M1 segment of the left middle cerebral artery with paucity of collaterals in the left cerebral hemisphere as compared to the opposite side (arrows in e and f). The Regional Leptomeningeal Collateral score was 6

Figure 1: Axial noncontrast computed tomography sections (a-c) show a large acute infarct in the left middle cerebral artery territory (arrows). Alberta stroke programme early computed tomographic score was 3. Computed tomography angiography axial (d and e) and coronal (f) sections show abrupt cutoff of M1 segment of the left middle cerebral artery with paucity of collaterals in the left cerebral hemisphere as compared to the opposite side (arrows in e and f). The Regional Leptomeningeal Collateral score was 6