نتایج جستجو برای: cerebral aneurysm

تعداد نتایج: 226942  

Journal: :Stroke 2004
Masaaki Shojima Marie Oshima Kiyoshi Takagi Ryo Torii Motoharu Hayakawa Kazuhiro Katada Akio Morita Takaaki Kirino

BACKGROUND AND PURPOSE Wall shear stress (WSS) is one of the main pathogenic factors in the development of saccular cerebral aneurysms. The magnitude and distribution of the WSS in and around human middle cerebral artery (MCA) aneurysms were analyzed using the method of computed fluid dynamics (CFD). METHODS Twenty mathematical models of MCA vessels with aneurysms were created by 3-dimensiona...

2015
Heng Liu Tijiang Zhang Song Jiao Bangguo Li Jing Guan Yi-Xiang J Wang

BACKGROUND The purpose of this study was to investigate the epidemiology of sporadic ruptured cerebral aneurysm in the Chinese population. METHODS We retrospectively analyzed the medical records of 264 consecutive Chinese patients admitted to the Affiliated Hospital of Zunyi Medical University of Guizhou Province in Southwest China between December 2012 and March 2015 for spontaneous subarach...

Journal: :Surgical neurology international 2016
Goran Mrak Kresimir Sasa Duric Jakob Nemir

BACKGROUND Ischemic stroke is a well-described but less frequent consequence of ruptured or unruptured intracranial aneurysms. To date, the optimal form of treatment for patients with a thrombosed cerebral aneurysm has not yet been well-defined. CASE DESCRIPTION Here, we report a case of a 68-year-old female patient presenting with cerebral stroke. Five days poststroke multislice computed tom...

2006
Sang Hyun Suh Dong Joon Kim Joon Soo Byun

extremity weakness. Brain MRI showed multiple scattered embolic infarctions on left middle cerebral artery (MCA) territory with A-com aneurysm. Transfemoral cerebral angiography was tried and failed due to stenosis of distal aortic arch (Fig. 1). Therefore, cerebral angiography was performed through right radial artery and revealed 3.2×2.5 mm-sized anterior communicating (A-com) aneurysm with i...

2015
Hak Jin Kim Sang Won Lee Tae Hong Lee Young Soo Kim

We describe a case of a huge intramural hematoma in a thrombosed middle cerebral artery aneurysm. A 47-year-old female patient with liver cirrhosis and thrombocytopenia presented to the neurosurgical unit with a 5-day history of headache and cognitive dysfunction. Magnetic resonance imaging and computed tomography of the brain showed a thrombosed aneurysm located in the right middle cerebral ar...

Journal: :AJNR. American journal of neuroradiology 1999
H J Cloft D F Kallmes M E Jensen G Lanzino J E Dion

We report two cases of distal cerebral aneurysms that were treated by parent artery occlusion with short Guglielmi detachable coils (GDCs). One patient had a presumed mycotic aneurysm of the distal left posterior cerebral artery, and the other had a partially clipped aneurysm of the distal right anterior inferior cerebellar artery that had hemorrhaged. Short GDCs allow controlled, accurate occl...

2016
Jinsol Han Dong-Jun Lim Sang-Dae Kim Sung-Kon Ha Seung-Hwan Lee Se-Hoon Kim

Pure subdural hematomas caused by a ruptured intracranial aneurysm are extremely rare. We describe the case of a 42-year-old woman who presented with headache without evidence of head trauma. Magnetic resonance angiography and conventional cerebral angiography revealed a ruptured aneurysm at the right middle cerebral artery bifurcation. The patient underwent surgical treatment and had a good ou...

Journal: :Journal of neurosurgery 2016
Kimon Bekelis Joanna S Kerley-Hamilton Amy Teegarden Craig R Tomlinson Rachael Kuintzle Nathan Simmons Robert J Singer David W Roberts Manolis Kellis David A Hendrix

OBJECTIVE The molecular mechanisms behind cerebral aneurysm formation and rupture remain poorly understood. In the past decade, microRNAs (miRNAs) have been shown to be key regulators in a host of biological processes. They are noncoding RNA molecules, approximately 21 nucleotides long, that posttranscriptionally inhibit mRNAs by attenuating protein translation and promoting mRNA degradation. T...

2014
Lin Zhao Lihong Zhang Xiaolin Zhang Zhenzhong Li Linwei Tian Yi-Xiang J. Wang

BACKGROUND To review the epidemiology of sporadic ruptured cerebral aneurysm. METHODS This is a retrospective study of consecutive 1256 Chinese patients between January 2006 and January 2013, who were admitted to the Second Hospital of Hebei Medical University, China, for spontaneous subarachnoid hemorrhage due to a rupture of cerebral artery aneurysm. In 288 males and 478 females, the size o...

Journal: :AJNR. American journal of neuroradiology 2009
J R Cebral S Hendrickson C M Putman

BACKGROUND AND PURPOSE Hemodynamics is thought to play an important role in the mechanisms of cerebral aneurysm initiation, progression, and rupture. The purpose of this study was to present a hemodynamic study of a cerebral aneurysm immediately before its rupture to assess whether previously identified hemodynamic characteristics would classify this aneurysm in the high-risk category. MATERI...

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