Evaluation of the Cause of Internal Jugular Vein Obstruction on Head and Neck Contrast Enhanced 3D MR Angiography Using Contrast Enhanced Computed Tomography

조영증강 전산화단층촬영술을 이용한 두경부 조영증강 삼차원 자기공명혈관촬영술에서 내경정맥 폐쇄의 원인 평가

  • Gweon, Hye-Mi (Department of Diagnostic Radiology, Gangnam Severance Hospital, Yonsei University Health System) ;
  • Chung, Tae-Sub (Department of Diagnostic Radiology, Gangnam Severance Hospital, Yonsei University Health System) ;
  • Suh, Sang-Hyun (Department of Diagnostic Radiology, Gangnam Severance Hospital, Yonsei University Health System)
  • 권혜미 (연세의대 강남세브란스병원 영상의학과) ;
  • 정태섭 (연세의대 강남세브란스병원 영상의학과) ;
  • 서상현 (연세의대 강남세브란스병원 영상의학과)
  • Received : 2011.04.08
  • Accepted : 2011.04.14
  • Published : 2011.04.30

Abstract

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 $1.6{\pm}1.0\;mm$ and $4.1{\pm}2.1\;mm$ 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 $103.4{\pm}25.3\;mm^2$ which is significantly larger than in control group (p<0.05). Conclusion : 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.

목적: 조영 증강 삼차원 자기공명혈관촬영술에서 관찰되는 내경정맥 폐쇄의 원인을 조영 증강 전산화단층촬영술을 이용하여 분석하고자 한다. 대상과 방법: 2005년부터 2008년까지 두경부 조영증강 자기공명혈관조영술과 조영증강 전산화단층촬영술을 함께 시행한 30명의 환자를 대상으로 하였다. 조영증강 자기공명혈관조영술에서 내경정맥의 폐쇄가 있는 경우 폐쇄군으로 하였고 내경정맥의 폐쇄가 없는 경우 대조군으로 구분하였다. 다음의 지표를 조영증강 전산화단층촬영술에서 분석하였다 : 1) 내정정맥의 직경; 2) 경상돌기와제일경추의 외측돌기와의 거리; 3) 제일경추의 외측돌기의 최대넓이 이후 각각의 지표를 폐쇄군과 대조군에서 비교하였다. 결과: 폐쇄군에서 내경정맥의 직경 그리고 정상돌기와 제일경추의 외측돌기와의 거리는 각각 $1.6{\pm}1.0\;mm$ 그리고 $4.1{\pm}2.1\;mm$로 평가되었으며 이는 대조군과 비교하여 유의하게 작게 분석되었다 (p < 0.01). 폐쇄군에서 제일경추의 외측돌기의 최대 넓이는 $103.4{\pm}25.3\;mm^2$로 평가되었으며 이는 대조군과 비교하여 유의하게 넓은 것으로 나타났다 (p < 0.05). 결론: 조영증강 자기공명혈관촬영술에서 보이던 대경정맥 폐쇄의 원인은 제일경추의 비대칭적인 큰 넓이에 의한 것 일수 있다.

Keywords

References

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