OBSERVATION ON THE COURSE OF THE TERMINAL SEGMENT OF THE SUPERIOR CEREBRAL VEINS
- VernacularTitle:大脑上静脉末段行路的观察
- Author:
Yubi WAN
;
Jiading HUANG
;
Yongqing BAI
;
- Publication Type:Journal Article
- From:
Acta Anatomica Sinica
1957;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Specimens of 50 adult brain with meninges were examined under magnificationof 5?.The number of the superior cerebral veins(SCV)varies considerably on bothsides.Cases with 7 branches on one side are most commonly seen. SCV perforate the arachnoid either at the superior border of the cerebral hemi-sphere or far beyond it.More branches perforate the arachnoid beyond the superiorborder of the cerebral hemisphere.The length of SCV between the superior borderof the cerebral hemisphere and the point where the veins perforate the arachnoid ismeasured and in average,the length of the frontal veins and veins of central gyriis longer than that of the parieto-occipital veins.The outer caliber of the frontopolar veins and occipital veins is the smallest andthat of the combined trunk veins is the largest.Bridge veins usually occur in the branches of SCV except the left central vein.The incidence of the bridge vein in the left and right frontopolar veins is thehighest(50～60%).There is an adherent segment occurring in all branches of SCV.The incidenceof the adherent segment in different branches is almost over 50%.Therefore it maybe considered that the presence of the adherent segment in SCV is a normal pheno-menon.The frontal veins and the veins of the central gyri usually adhere to thedura,and the parieto-occipital veins to the lateral wall of the superior sagittal sinusand the cerebral falx.Very few perforated segments can be seen in frontal veins,yet the percentageof its presence in the both sides of the veins of central gyri and parieto-occipitalveins are 9% and 11.22% respectively.Any vein with a perforated segment per-forates the lateral wall of the superior sagittal sinus predominantly.The application of the bridging vein,or adherent segment and perforated seg-ment of the SCV in neurosurgery has been discussed.
