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KMID : 0858520110150010041
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Journal of the Korean Society of Magnetic Resonance in Medicine
2011 Volume.15 No. 1 p.41 ~ p.47
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Evaluation of the Cause of Internal Jugular Vein Obstruction on Head and Neck Contrast Enhanced 3D MR Angiography Using Contrast Enhanced Computed Tomography
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Gweon Hye-Mi
Chung Tae-Sub
Suh Sang-Hyun
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Abstract
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Purpose: To evaluate the cause of internal jugular vein (IJV) obstruction on contrast enhanced 3D MR angiography (CE-MRA) using contrast enhanced computed tomography (CE-CT).
Materials and Methods: A total number of 30 patients were enrolled, who underwent both head and neck CE-MRA and CE-CT from 2005 to 2008. We defined obstruction group which had IJV obstruction and control group which had no IJV obstruction on CE-MRA. The following parameters were measured from axial images of CE-CT: 1) diameter of IJV; 2) distance between the styloid process and ipsilateral lateral mass of the atlas; 3) maximum area of lateral mass of the atlas. Each parameter was compared between obstruction group and control group.
Results: The diameter of IJV and distance between the styloid process and lateral mass of the atlas at IJV obstruction side in obstruction group were and respectively, which resulted in statistical significance (p<0.01). The maximum area of lateral mass of the atlas at IJV obstruction side in obstruction group was which is significantly larger than in control group (p<0.05).
Conslusion: We found that the cause of IJV obstruction on CE-MRA could be narrow space between the styloid process and the lateral mass of the atlas, which was related with asymmetric larger area of lateral mass of atlas.
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KEYWORD
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Internal jugular vein, Atlas, Computed tomography (CT), Magnetic resonance angiography
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