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BioMed Research International
Volume 2016 (2016), Article ID 7051856, 7 pages
Research Article

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

1Stroke Center, Department of Neurology, Changhua Christian Hospital, Changhua and Graduate Institute of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
2Epidemiology and Biostatistics Center, Changhua Christian Hospital, Changhua, Taiwan
3Department of Medical Imaging, Changhua Christian Hospital, Changhua, Taiwan
4Institute of Statistics, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu 30010, Taiwan

Received 31 January 2016; Accepted 17 February 2016

Academic Editor: Aristomenis K. Exadaktylos

Copyright © 2016 Chih-Ming Lin et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Carotid stenting is an effective treatment of choice in terms of treating ischemic stroke patients with concomitant carotid stenosis. Though computed tomography perfusion scan has been recognized as a standard tool to monitor/follow up this group of patients, not everyone could endure due to underlying medical illness. In contrast, carotid duplex is a noninvasive assessment tool and could track patient clinical condition in real time. In this study we found that “resistance index” of the carotid ultrasound could detect flow changes before and after the stenting procedure, thus having great capacity to replace the role of computed tomography perfusion exam.