Results 31 to 40 of about 137,738 (292)

Dr. Thomas Willis and his ‘Circle’ in the Brain

Nepal Journal of Neuroscience, 2005
With the advances in microneurosurgery and the ability to tackle diseases of the intracranial arteries at the base of the brain (often referred to as the Circle of Willis) surgically more effectively, accurate knowledge of the intracranial vascular ...
PVS Rana
doaj   +1 more source

Association between symptomatic intracranial atherosclerotic disease and the integrity of the circle of Willis [PDF]

Journal of Integrative Neuroscience, 2022
The relationship between the severity of intracranial atherosclerotic disease and the circle of Willis integrity is unclear. In this brief report, we investigate the associations between symptomatic intracranial atherosclerotic disease and the ...
Yilan Xu, Dongye Li, Wei Dai, Zhuozhao Zheng, Xihai Zhao   +4 more
doaj   +1 more source

Association between Circle of Willis Configuration and Rupture of Cerebral Aneurysms

Medicina, 2019
Background and Objectives: Intracranial hemorrhage caused by the rupture of brain aneurysms occurs in almost 10 per 100,000 people whereas the incidence of such aneurysms is significantly higher, accounting for 4−9%.
Nebojša N. Stojanović, Aleksandar Kostić, Radisav Mitić, Luka Berilažić, Miša Radisavljević   +4 more
doaj   +1 more source

Thomas Willis' legacy on the 400th anniversary of his birth

Arquivos de Neuro-Psiquiatria, 2022
To celebrate the 400th anniversary of the birth of Thomas Willis, his main contributions to the development of neurosciences, in particular neurology, are presented.
Hélio Afonso Ghizoni Teive, Léo Coutinho, Carlos Henrique Ferreira Camargo, Renato Puppi Munhoz, Olivier Walusinski   +4 more
doaj   +1 more source

Willis环变异与缺血性卒中相关性的研究进展 Research Progress of the Correlation between Variation in the Circle of Willis and Ischemic Stroke

Zhongguo cuzhong zazhi
通过尸体解剖和MRA等影像学技术，学者们发现Willis环存在变异，并将其分为不同类型。依托MRA技术，根据Willis环不同动脉段直径大小，可将Willis环分为4种类型。研究发现不同类型的Willis环与缺血性卒中的发病、发生部位及复发有关，然而不同类型的Willis环与缺血性卒中的严重程度及预后的相关性存在一定的争议。本文就Willis环变异与缺血性卒中的相关性进行综述。 Abstract: In the evaluation of autopsy and MRA technology ...
曾潮坤，赵振强 (ZENG Chaokun, ZHAO Zhenqiang)
doaj   +1 more source

A Comprehensive Study of the Anatomical Variations of the Circle of Willis in Adult Human Brains [PDF]

Journal of Clinical and Diagnostic Research, 2013
Background: Cerebrovascular diseases such as stroke, aneurysms and arterio-venous malformations are very much prevalent in our country. Circle of Willis, as an anastomotic polygon at the base of the brain forms an important collateral network to ...
S. Iqbal
doaj   +1 more source

X-ray-emitting Atmospheres of B2 Radio Galaxies [PDF]

, 1999
We report ROSAT PSPC spatial and spectral analysis of the eight B2 radio galaxies NGC 315, NGC 326, 4C 35.03, B2 0326+39, NGC 2484, B2 1040+31, B2 1855+37, and 3C 449, expected to be representative of the class of low-power radio galaxies. Multiple X-ray
Baars J. W. M., Bohringer H., Bridle A. H., Colla G., D. M. Worrall, de Ruiter H. R., Ekers R. D., Fanti C., Fanti C., Feretti L., Harris D. E., Komossa S., M. Birkinshaw, Mack K.-H., Massaglia S., Miley G. K., Morganti R., Parma P., Parma P., Trussoni E.   +19 more
core   +3 more sources

High‐Resolution MRI Revealed Different Etiology‐Specific Associations With Cerebral Infarction in Adult Moyamoya Vasculopathy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective High‐resolution MRI enables detailed assessment of intracranial vessel wall pathology in moyamoya vasculopathy. We aimed to classify adult moyamoya vasculopathy etiologies using high‐resolution MRI and to examine subtype‐specific associations between high‐resolution MRI features and ischemic infarction.
Guangsong Han, Jiachun Pan, Yuehui Hong, Xiaoyuan Fan, Ming Yao, Lixin Zhou, Yicheng Zhu, Feng Feng, Jun Ni   +8 more
wiley   +1 more source

Examination of Structural Variations of the Circle of Willis by 3D Time-of-Flight Magnetic Resonance Angiography

Frontiers in Neuroscience, 2020
Objectives: To explore structural variations of the circle of Willis using three-dimensional time-of-flight magnetic resonance angiography (3D-TOF-MRA), and to compare this modality with digital subtraction angiography (DSA).Methods: A total of 819 ...
Jing Li, Jue Wang, Xiao-er Wei, Yu-wu Zhao, Feng Wang, Yue-hua Li   +5 more
doaj   +1 more source

Chandra HRC Localization of the Low Mass X-ray Binaries X1624-490 and X1702-429: The Infrared Counterparts

, 2004
We report on the precise localization of the low mass X-ray binaries X1624-490 and X1702-429 with the Chandra HRC-I. We determine the best positions to be 16:28:02.825 -49:11:54.61 (J2000) and 17:06:15.314 -43:02:08.69 (J2000) for X1624-490 and X1702-429,
Alan P. Smale, Augusteijn T., Balucinska-Church M., Church M. J., Joao F. Alves, Joseph W. Wellhouse, Oosterbroek T., Patrice Bouchet, Sandeep K. Patel, Stefanie Wachter, Swank J. H., Watson M. G.   +11 more
core   +1 more source