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Fig. 2 | BMC Neurology

Fig. 2

From: Collateral status evaluation coupled with time window by dynamic axial computed tomographic angiography with a focus on the middle cerebral artery for mechanical thrombectomy

Fig. 2

Collateral status based on dynax–CTA. Column: The collateral status was good, intermediate, and poor in the right M2 (left), right M1 (middle), and right M1 occlusion (right), respectively. Row: Time-resolved images showing 8 s (four frames) before maximal opacification of the MCA in the contralateral hemisphere (upper), maximal opacification of the MCA in the contralateral hemisphere (asterisk) (middle), and 8 s (four frames) after maximal opacification of the MCA in the contralateral hemisphere (lower). dynax–CTA, dynamic axial computed tomography angiography; MCA, middle cerebral angiography

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