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한국인의 뇌동맥 촬영상 Sylvius 삼각형의 정상위치에 관한 연구
김관식,최덕영 대한신경외과학회 1978 Journal of Korean neurosurgical society Vol.7 No.1
The determination of the normal position of angiographic sylvian triangle was carried out in the 100 Korean subjects over the age of 12 in accordance with Vlahovitch's method for the clinical purpose of evaluating distorsion and displacement of the sylvian triangle in the pathological condition. And each measurement of the anterior and posterior extremities and inferior point of sylvian triangle was compaired with the determination by Vlahovitch. The following results were obtained: 1. The anterior extremity of sylvian triangle was close to or on the line MM' in the great majority, showing the mean location at 0.89㎜±2.69㎜ in front of the line. The posterior extremity of sylvian triangle revealed more variable position, at 9.60㎜±7.94㎜ posterior to the line AA. The inferior point of sylvian triangle lies at the junction of one-fourth of AA' and one-third of AO with variation of 2.21㎜±2.43㎜ above the line of one-fourth of AA" and 2.28㎜±2.04㎜ posterior to the line of one-third of AO. 2. Angles of sylvian triangle: Anterosuperior angle: 76.28˚(P-95±12.77˚) Posterior' angle: 27.91˚(P-95±6.81˚) Inferior angle: 73.73˚(P-95±12.49˚) 3. Height of sylvian triangle: One-fourth the hemis pheric height. 4. Length of superior insular line: One-third the hemispheric height. 5. Distance of superior insular line from external meatus along the hemispheric height: One-half the hemispheric height.