| Craniometric Guidance for Sylvian Vein: Sylvian Circle
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Seong Hoon Jeong1 , Hyo Joon Kim1 , Tae Sik Gong1 , Hyoungihl Kim1,2 , Jeong Ok Lee3 |
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1Department of Neurosurgery, Presbyterian Medical Center, Jeonju;
2Department of Medical System Engineering, Gwangju Institute of Science and Technology, Gwangju;
3College of Nursing, Jesus University, Jeonju, Korea |
| 실비안 정맥을 위한 두개계측 가이드: 실비안 서클
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정성훈1·김효준1·공태식1·김형일1,2·이정옥3
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전주예수병원 신경외과1, 광주과학기술원2, 예수대학교 간호학과3
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| Abstract |
Objective
Sylvian vein is a main anatomical landmark on the lateral brain surface. For neurosurgical approach, allocation of Sylvian is one of essential information. Under the minimal invasive surgical trend, sophisticated anatomical localization becomes more valuable. If we had craniometric guidance for Sylvian vein, neurosurgical planning and approach would be easier and be more reliable. Previously intended anatomical guidance for Sylvian vein is linear bar type and its drawing is difficult and not clear. So, we tried to make new guidance for Sylvian vein.
Methods
Sylvian veins of thirty-four patients were drawn on the venous phase angiographic films. Scanned images were fused manually. The boundary of the lateral skulls was realigned to fit together, and subsequently venous structures were overlaid. Coronal suture and posterior clinoid process were references for this realigning works. Half-length of the line connecting the external ear canal and glabella was used to draw a circle(Sylvian circle: SC). Sylvian circle and real course of Sylvian veins were compared. Distribution of Sylvian vein and SC were measured.
Results
Twenty-seven patients(79%) showed that their Sylvian veins were located within 5mm of SC. Five Sylvian veins were located above SC and two below SC.
Conclusion
SC presents Sylvian vein contour reasonably more than a straight line. And SC could be drawn easily and instinctively applicable to the neurosurgical fields. |
| Key Words:
Cerebral veins, Sylvian vein, Anatomic landmarks, Craniometry, Sylvian Circle |
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