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Kiyohiro Houkin - One of the best experts on this subject based on the ideXlab platform.

  • Multiple Varices in the Unilateral Cerebral Venous System
    American Journal of Neuroradiology, 1999
    Co-Authors: Ken Kazumata, Shin Fujimoto, Hiroyuki Idosaka, Satoshi Kuroda, Mitsuru Nunomura, Kiyohiro Houkin
    Abstract:

    A case of multiple Cerebral varices located in the Superficial Cerebral Veins and ipsilateral internal jugular vein is reported.

  • Multiple Varices in the Unilateral Cerebral Venous System
    1998
    Co-Authors: Ken Kazumata, Shin Fujimoto, Hiroyuki Idosaka, Satoshi Kuroda, Mitsuru Nunomura, Kiyohiro Houkin
    Abstract:

    Summary: A case of multiple Cerebral varices located in the Superficial Cerebral Veins and ipsilateral internal jug-ular vein is reported. Although a Cerebral varix may frequently be as-sociated with an arteriovenous malformation, a sol-itary intracranial varix is rare in the CNS (1–3). Several previous reports have described a Cerebral varix composed of a single Superficial or deep ce-rebral vein without other accompanying vascular malformations (4–7). We describe a case of unilat-eral varicosities in the Superficial Cerebral Veins and ipsilateral neck. Case Report A 24-year-old woman was referred because of a palpable mass in the right side of the neck. Her history was not re

  • Cytoarchitecture of periendothelial cells in human Cerebral venous vessels as compared with the scalp vein. A scanning electron microscopic study.
    Archives of Histology and Cytology, 1994
    Co-Authors: Akihiro Takahashi, Kiyohiro Houkin, Tatsuo Ushiki, Kazuhiro Abe, Hiroshi Abe
    Abstract:

    Three-dimensional cytoarchitectures of the periendothelial cells of human Cerebral venous vessels as well as a scalp vein were studied by scanning electron microscopy after removal of extra-cellular connective tissue matrices with a KOH-collagenase digestion method. Postcapillary venules appeared covered with pericytes, while collecting venules had stellate periendothelial cells which formed a basket-like network around the vessel wall. As the size of the venous vessels increased, the stellate periendothelial cells became flat in shape and dense in arrangement. Although they had some characteristics similar to the smooth muscle cells in surface structure, no spindle-shaped smooth muscle cells were recognizable even in the Superficial Cerebral Veins. On the other hand, the scalp vein was densely covered with spindle-shaped smooth muscle cells running circularly. These findings suggest that the Cerebral venous vessels cannot constrict strongly as compared with the scalp vein, but probably regulate blood volume by mildly changing the caliber of the vessels.

Shoki Takahashi - One of the best experts on this subject based on the ideXlab platform.

Shuichi Higano - One of the best experts on this subject based on the ideXlab platform.

Xiangyang Gong - One of the best experts on this subject based on the ideXlab platform.

  • The relationship of Superficial Cerebral Veins with meningiomas by simulation craniotomy techuique
    Chinese journal of radiology, 2012
    Co-Authors: Hong-wei Zhao, Xiangyang Gong
    Abstract:

    Objective To assess the value of simulation craniotomy (SC) technique in evaluation of Superficial Cerebral Veins (SCVs) and its relationship with convexity,parasagittal and falcine meningiomas.Methods Forty-nine consecutive patients with convexity,parasagittal,and falcine meningiomas performed SC technique and three-dimensional contrast enhanced MR venography (3D CE MRV) in a prospective study.The number of SCVs ( diameter ＞ 1 mm) within 2 cm around the margin of tumors detected by two techniques were compared with the paired t test.Furthermore,49 cases were divided into groups according to the tumor largest diameter,position,and dural enhancement.The image quality of SC technique in different groups were analyzed by Wilcoxon test in order to find influence factors.Results The number of SCVs within 2 cm around the margin of tumor in SC was 4.4 ± 1.9,which was significantly less than that on 3D CE MRV (5.1 ± 2.7) ( t =3.131,P ＜ 0.05 ).The relationship between meningiomas and the SCVs was demonstrated well on SC in majority of cases with the score of image quality was 2.5 ±0.7.The score of image quality of 12 patients with obvious dural enhancement was 1.5 ± 0.5,which was significantly lower than that of 37 patients without dural enhancement ( 2.8 ± 0.3 ) ( Z =- 3.093,P ＜ 0.05 ).The score of image quality of 18 patients with tumor larger than 4 cm in diameter ( 2.2 ± 0.9 )was significantly lowed than that of 31 patients with small tumors (2.7 ± 0.5 ) ( Z =- 2.057,P ＜ 0.05 ).The score of image quality of convexity group ( n =10) and parasagittal and falcine group ( n =39 ) was 2.2 ± 0.9 and 2.6 ± 0.6,and there was no significant difference between different location group ( Z =- 0.604,P ＞ 0.05).Conclusions Simulation craniotomy can exactly display SCVs avoiding the influence of deep Cerebral Veins and skull Veins.This simple technique can provide useful information about the SCVs and their relationships with cortical structures and tumors for preoperative surgical planning. Key words: Meningioma; Cerebral Veins; Magnetic resonance imaging

  • virtually peeling off the skull and scalp a simple way of mapping the Superficial Cerebral Veins on the brain surface
    Stereotactic and Functional Neurosurgery, 2008
    Co-Authors: Xiangyang Gong, Atsushi Umetsu, Takaki Murata, Shuichi Higano, Toshihiro Kumabe, Shunji Mugikura, Shoki Takahashi
    Abstract:

    Purpose: A simple MRI postprocessing technique was developed to display Superficial Cerebral Veins (SCVs) along with brain surface structures. Materials and Methods:

Wei Song - One of the best experts on this subject based on the ideXlab platform.

  • Microsurgical anatomy and DSA research about venous anastomosis of Superficial Cerebral Veins
    National Medical Journal of China, 2015
    Co-Authors: Yinghao Gu, Wei Song
    Abstract:

    OBJECTIVE: To investigate the distribution and clinical significance about venous anastomosis of Superficial Cerebral vein in normal adult. METHODS: The digital subtraction angiography (DSA) images of the venous phase from 50 normal adults were retrospectively analyzed, and the morphology of venous anastomosis of Superficial Cerebral Veins was observed and measured. While venous anastomosis of Superficial Cerebral Veins of 15 (30 sides) cadaveric heads was observed through blood vessel perfusion. RESULTS: Trolard vein and Labbe vein were the main venous anastomosis of Superficial Cerebral Veins. A total of 55 Trolard Veins were found out of 50 sides DSA venous phase images, including left 27, right 28; 34 Trolard Veins, left 18, right 16, were found from the 30 sides of the brain hemispheres. 51 Labbe Veins, left 25, right 26, were found from the 50 sides DSA venous phase images, and 31 Labbe Veins, left 15, right 16, were found from the 30 sides of the brain hemispheres. CONCLUSIONS: Venous anastomosis of Superficial Cerebral Veins is variable. The DSA venous phase image is consistent with the microscopic anatomy, and the preoperative DSA examination is beneficial for the protection of venous anastomosis of Superficial Cerebral Veins.

  • Microsurgical anatomy and DSA research about venous anastomosis of Superficial Cerebral Veins
    National Medical Journal of China, 2015
    Co-Authors: Wei Song, Hu Sun
    Abstract:

    Objective To investigate the distribution and clinical significance about venous anastomosis of Superficial Cerebral vein in normal adult. Methods The digital subtraction angiography (DSA) images of the venous phase from 50 normal adults were retrospectively analyzed, and the morphology of venous anastomosis of Superficial Cerebral Veins was observed and measured. While venous anastomosis of Superficial Cerebral Veins of 15 (30 sides) cadaveric heads was observed through blood vessel perfusion. Results Trolard vein and Labbe vein were the main venous anastomosis of Superficial Cerebral Veins. A total of 55 Trolard Veins were found out of 50 sides DSA venous phase images, including left 27, right 28; 34 Trolard Veins, left 18, right 16, were found from the 30 sides of the brain hemispheres. 51 Labbe Veins, left 25, right 26, were found from the 50 sides DSA venous phase images, and 31 Labbe Veins, left 15, right 16, were found from the 30 sides of the brain hemispheres. Conclusions Venous anastomosis of Superficial Cerebral Veins is variable. The DSA venous phase image is consistent with the microscopic anatomy, and the preoperative DSA examination is beneficial for the protection of venous anastomosis of Superficial Cerebral Veins. Key words: Superficial Cerebral Veins; Venous Anastomosis; Digital subtraction angiography; Microsurgical anatomy