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AJNR Awards, New Junior Editors, and more. Read the latest AJNR updates

Research ArticleHead and Neck Imaging

Nonbifurcating Cervical Carotid Artery Diagnosed by MR Angiography

A. Uchino, N. Saito, T. Watadani, W. Mizukoshi and R. Nakajima
American Journal of Neuroradiology May 2011, DOI: https://doi.org/10.3174/ajnr.A2462
A. Uchino
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N. Saito
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T. Watadani
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W. Mizukoshi
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R. Nakajima
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Abstract

BACKGROUND AND PURPOSE: A nonbifurcating cervical carotid artery is a branching anomaly in which the ECA has no proximal main trunk. We report its incidence and characteristic features on MRA.

MATERIALS AND METHODS: We retrospectively reviewed MRAs of 2866 patients obtained by using a standard noncontrast MRA protocol and two 1.5T MR imaging units and reviewed the English language literature to assess the occurrence and features of this nonbifurcating artery.

RESULTS: We diagnosed 6 cases, indicating an incidence of 0.21%, and found 11 cases reported in the literature. Analysis of all 17 cases demonstrated no laterality or sex predominance. The most prevalent pattern of branching order from proximal to distal was the F-L trunk, the distal trunk of the ECA, and the OA.

CONCLUSIONS: A nonbifurcating cervical carotid artery is rare but not as extremely rare as previously considered, and its correct diagnosis is necessary to avoid complications during interventional radiologic procedures or head and neck surgeries.

Footnotes

  • APA
    ascending pharyngeal artery
    CCA
    common carotid artery
    DSA
    digital subtraction angiography
    ECA
    external carotid artery
    FA
    facial artery
    F-L
    facial-lingual
    ICA
    internal carotid artery
    LA
    lingual artery
    MIP
    maximum intensity projection
    MRA
    MR angiography
    OA
    occipital artery
    TOF
    time-of-flight
    VA
    vertebral artery

  • © 2011 American Society of Neuroradiology
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Cite this article
A. Uchino, N. Saito, T. Watadani, W. Mizukoshi, R. Nakajima
Nonbifurcating Cervical Carotid Artery Diagnosed by MR Angiography
American Journal of Neuroradiology May 2011, DOI: 10.3174/ajnr.A2462

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Nonbifurcating Cervical Carotid Artery Diagnosed by MR Angiography
A. Uchino, N. Saito, T. Watadani, W. Mizukoshi, R. Nakajima
American Journal of Neuroradiology May 2011, DOI: 10.3174/ajnr.A2462
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