Role of Extracranial Carotid Duplex and Computed Tomography Perfusion Scanning in Evaluating Perfusion Status of Pericarotid Stenting

Figure 1

An example of left side severe internal carotid artery stenosis undergoing carotid stenting treatment. An 85-year-old male patient presented with right side hemiparesis and aphasia 24 hours before admission to our neurology ward. (i) (a) denotes CTA scan showing >70% lumen reduction of left side proximal internal carotid artery and distal part of common carotid artery (black arrow). (ii) (b) shows the CT perfusion scan that suggests decreased blood perfusion to the left cerebral hemisphere indicating critical blood flow demand compared to the right side cerebral hemisphere. (iii) (c) presents the poststenting status with umbrella device that prevent embolus distal migration causing major subsequent stroke event (black arrow). (iv) (d) displays the follow-up cervical carotid ultrasound of normalized flow profile.

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