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The Usefulness of 3-dimensional CT Angiography for Surgeries at the Craniovertebral Junction Masashi Yamazaki 1 , Akihiko Okawa 1 , Masao Koda 1 , Kazuhisa Takahashi 1 , Noriyuki Yanagawa 2 1Department of Orthopaedic Surgery, Chiba University Graduate School of Medicine 2Department of Radiology, Chiba University Hospital Keyword: 椎骨動脈 , vertebral artery , 3次元CT血管造影法 , 3D-CT angiography , 上位頚椎 , upper cervical spine pp.875-881
Published Date 2008/9/25
DOI https://doi.org/10.11477/mf.1408101357
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 We preoperatively examined 77 patients for VA anomalies by 3-dimensional computed tomography angiography (3D-CTA) in order to avoid intraoperative vertebral artery (VA) injury during instrumentation surgery at the craniovertebral junction. An abnormal course of the VA in the extraosseous region was detected in 10 patients (13.0%), and a high-riding VA was identified in 21 patients (27.3%). The incidence of VA anomalies in the extraosseous and intraosseous regions was higher in patients with a congenital skeletal anomaly at the craniovertebral junction. Preoperative 3D-CTA allowed precise identification of anomalous VAs and reduction of the risk of intraoperative injury of the VA.


Copyright © 2008, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1286 印刷版ISSN 0557-0433 医学書院

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