Search Results
Results 401 - 450 of 1848
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Watanabe Masaki - - 2009
We report the case of a patient with distal migration of a floating carotid thrombus caused by oral contraceptives. A 48-year-old woman using oral contraceptives suffered from dysarthria and gait disturbance. Examinations, including ultrasound and cerebral arteriogram, revealed a floating thrombus at the left carotid bifurcation with no stenosis. Despite ...
Kwater Aleksander - - 2009
BACKGROUND AND PURPOSE: The relationship between systemic arterial stiffness and parameters of cerebral circulation is poorly understood. We aimed to assess the relation between pulsatility (PI) and resistance (RI) indexes of the middle cerebral artery (MCA) and aortic pulse wave velocity (PWV) and brachial pulse pressure (PP). METHODS: Bilateral transcranial ...
Nowacki Przemysław - - 2009
BACKGROUND AND PURPOSE: Improved haemodynamics in the middle cerebral arteries (MCAs) after carotid artery endaterectomy (CEA) has been demonstrated in a number of studies, whereas similar analyses on carotid angioplasty and stenting (CAS) remain insignificant. The purpose of the study was to test whether CAS affects haemodynamic parameters of MCA ...
Ahmed Manzoor - - 2009
We present 3 cases of unilateral internal carotid artery (ICA) occlusions with prominent single collateralizing vessel of vasa vasorum on computed tomographic angiography. The features on axial source and 3-dimensional images of computed tomographic angiography include "pseudostring sign," serpigenous course of the vasa vasorum, eccentric dot appearance in the wall ...
Martínez-Sánchez Patricia - - 2009
Ultrasound (US) techniques increase the ability of neurologists specializing in stroke to rapidly evaluate stroke patients, determine likely mechanisms of brain ischemia, determine arterial patency, quantify stenosis severity, and determine the most appropriate clinical management. Furthermore, the development of new US techniques based on the detection of US contrast agents ...
Amarenco Pierre - - 2009
Underlying pathologies of stroke of unknown cause include atherosclerosis in brain arteries, either intracranial (e.g. moderate middle cerebral artery stenosis), extracranial (e.g. vertebral artery origin stenosis) or proximal (e.g. thick plaques in the aortic arch), thought to be unrelated to the stroke; cardiac findings of undetermined causal link (e.g. patent ...
Yoneda Yukihiro - - 2009
Therapeutic guidelines of intravenous thrombolysis with tissue plasminogen activator (tPA) for hyperacute ischemic stroke are very strict. Because of potential higher risk of bleeding complications, the presence of unruptured cerebral aneurysm is a contraindication for systemic thrombolysis with tPA. According to the standard CT criteria, a 66-year-old woman who suddenly ...
López-Serna Raúl - - 2009
Bilateral thalamic infarcts are rare presentations of stroke. They are the result of a complex combination of risk factors and a predisposing vessel distribution. The artery of Percheron, characterized by a single arterial trunk that irrigates both paramedian thalamic regions, can be occluded as a result of embolic diseases leading ...
Chuang Yu-Ming - - 2009
BACKGROUND AND PURPOSE: The purpose of the present study was to assess whether the direction of flow via the circle of Willis (CoW) changed after stenting for severe internal carotid artery (ICA) stenosis. METHODS: 65 patients (38 men, mean age 63.2 +/- 8.4 years, range 44-82) with a symptomatic ICA ...
Sanna Mario - - 2009
The infratemporal fossa approach described by Fisch overcame most of the factors that had previously prevented the total removal of tympanojugular paragangliomas (TJP). The remaining problem has been infiltration of the internal carotid artery (ICA) for which there has been no entirely satisfactory solution. At the least, severe encasement risks ...
Tsivgoulis Georgios - - 2009
BACKGROUND AND PURPOSE: Knock-type Doppler signals (KTDS) are detectable by transcranial Doppler, and it has been hypothesized that they are related to an occlusion of a small perforating artery and microvascular ischemia. However, the nature of KTDS has not been prospectively defined. We aimed at describing the spectral and power ...
Iizuka Takahiro - - 2009
Mitochondrial myopathy, encephalopathy, lactic acidosis and stroke-like episodes (MELAS) is a distinct clinical syndrome caused by mutations in the mitochondrial DNA. The pathogenesis of stroke-like episodes remains unknown but major vessels stenosis is not a cause of stroke-like episodes. We describe a novel heteroplasmic G617A transition in the mitochondrial transfer ...
Attigah N - - 2009
BACKGROUND: To evaluate long-term results of surgical therapy of extracranial carotid artery aneurysms (ECCA) and to provide a morphologic classification for individual surgical reconstruction techniques. PATIENT AND METHODS: This retrospective analysis includes 57 patients (43 male, mean age 61.9 years.) with 64 carotid reconstructions for ECCA between 1980 and 2004. ...
De Silva D A - - 2008
We studied the relationship of arterial stiffness, measured by carotid-femoral pulse wave velocity and inflammation, measured by serum erythrocyte sedimentation rate among 334 ischaemic stroke patients. There was a significant correlation between carotid-femoral pulse wave velocity and erythrocyte sedimentation rate (P = 0.001), a relationship independent of age, hypertension, diabetes ...
Setacci C - - 2008
EUCAS is a multicenter Registry of carotid artery stenting (CAS) in patients with acute cerebral ischemia (TIA or minor stroke), designed to determine the role of early endovascular intervention in a selected population with a vulnerable lesion of carotid bifurcation. The aim of the registry is to study the safety ...
Faraglia Vittorio - - 2009
Transfemoral filter-protected carotid artery stenting (CAS) has emerged as a valid alternative to carotid surgery. To overcome the drawbacks of femoral access for CAS and reduce embolic load, some have proposed cervical access with internal carotid artery (ICA) flow reversal. In a series of patients at high risk for femoral ...
Braun K P J - - 2009
Arteriopathies are the commonest cause of arterial ischaemic stroke (AIS) in children. Repeated vascular imaging in children with AIS demonstrated the existence of a 'transient cerebral arteriopathy' (TCA), characterized by lenticulostriate infarction due to non-progressive unilateral arterial disease affecting the supraclinoid internal carotid artery and its proximal branches. To further ...
Shimizu Satoya - - 2009
An aberrant internal carotid artery (ICA) in the middle ear is rare and difficult to diagnose, and may lead to severe complications. We present here a case of aberrant ICA with a deficiency in the origin of the anterior cerebral artery. The only symptom was aural fullness, and a nonpulsatile ...
Kawabata Yasuhiro - - 2009
PURPOSE: Carotid artery stent placement has been accepted as an effective alternative to carotid endarterectomy (CEA), especially in patients at high risk in the setting of CEA. The purpose of this study was to determine potential clinical risk factors for the development of postprocedural neurologic deficits after carotid artery stent ...
Zayed Hany - - 2009
OBJECTIVE: To assess the yield of screening for asymptomatic carotid artery disease prior to isolated heart valve surgery (IHVS). METHODS: Retrospective analysis of the preoperative carotid duplex scans performed in neurologically asymptomatic patients who underwent IHVS between 2003 and 2006 was performed. Internal carotid artery (ICA) stenosis of 70% was ...
Schreuder Floris H B M - - 2009
BACKGROUND: Duplex ultrasonography is frequently used to select patients who are eligible for carotid endarterectomy by using local blood flow velocities to quantify the degree of internal carotid artery stenosis. However, ageing affects flow velocities and might hence influence the accuracy of duplex ultrasonography, as explored in the present study. ...
Sadikin Cindy C Department of Radiology, Mitra Keluarga Hospital, Surabaya, Indonesia - - - 2008
We report a case of a 59-year-old man who presented with an acute stroke involving the territory of his left middle cerebral artery, and who was treated with combined systemic and intraarterial thrombolysis. After these treatments, the segment remained stenotic. An urgent intracranial angioplasty was performed, resulting in satisfactory recanalization ...
Watanabe Arata - - 2008
Oculomotor nerve palsy is very rare as the only manifestation of internal carotid artery (ICA) occlusion, and the angiographic findings have not been described in detail. We present a case of ipsilateral ICA occlusion manifesting as only sudden onset of oculomotor nerve palsy. Cerebral angiography showed occlusion of the ICA ...
Fichet Jérôme - - 2008
Stroke is a rare but severe event after acute coronary syndrome. Relations between both arterial territories are still discussed but prevalence of asymptomatic carotid stenosis potentially implicated in the mechanism of stroke is under-investigated. This study aimed to determine the prevalence of asymptomatic carotid stenosis in that population and review ...
Uretsky Scott - - 2008
PURPOSE OF REVIEW: To summarize the randomized trial data comparing carotid endarterectomy with carotid artery stenting and describe ischemic visual symptoms and their presentation to ophthalmologists. RECENT FINDINGS: Carotid stenosis, symptomatic and asymptomatic, is prevalent and is a significant cause of stroke. Timely evaluation and intervention are important in stroke ...
Kizer Jorge R - - 2008
Despite increasing sophistication of brain imaging, neurovascular evaluation, and laboratory testing, a sizable proportion of ischemic strokes defy etiologic classification. Many, if not most, of such 'cryptogenic' strokes may stem from unrecognized cardiac or aortic embolism, with a bimodal pathophysiology potentially dominated by interatrial septal abnormalities in young adults, and ...
Pfeiffer Jens - - 2008
OBJECTIVES/HYPOTHESIS: Pronounced anatomic variations of the extracranial internal carotid artery (ICA) can be found in 5% to 6% of the general population. An aberrant ICA is at risk of injury during routine pharyngeal procedures if the vessel is placed into close relationship with the pharyngeal wall. The objective was to ...
Jaff Michael R - - 2008
Stenosis of the internal carotid artery represents a major cause of stroke, with atherosclerosis representing the major pathophysiology of this stenosis. It is estimated that over 700,000 Americans suffer a stroke annually. A prompt and accurate diagnosis of carotid artery disease is critical when planning a therapeutic strategy. Physical examination ...
Song Tae Jin - - 2008
Rapid arterial rethrombosis is associated with high-grade residual stenosis and usually occurs at the site of the initial occlusion, resulting in reocclusion of the recanalized artery. Platelets may play an active role in such rethrombosis after thrombolytic-induced clot lysis. Given that glycoprotein IIb/IIIa receptor blockers, like tirofiban, prevent thrombus formation ...
Skjelland Mona - - 2009
BACKGROUND AND PURPOSE: Cerebral microembolic signals detected by transcranial Doppler are frequent during carotid angioplasty with stenting and carotid endarterectomy (CEA). Their potential harmful effects on the brain are, however, unclear. The aim of this study was to relate the frequency and type of per-procedural microembolic signals to procedure-related ipsilateral ...
Wessels Tiemo - - 2008
PURPOSE: To determine the value of color Doppler sonography (CDUS) in the diagnosis and follow-up of patients with extracranial and intracranial vertebral artery (VA) dissection. METHOD: Thirty-three patients aged 42 +/- 12 years with 40 VADS confirmed via digital subtraction angiography (DSA) (n = 37) and magnetic resonance angiography (MRA) ...
Furuse Motomasa - - 2008
Intracerebral haemorrhage accompanied with cervical internal carotid artery (ICA) occlusion on the same side without moyamoya-like vessels is rare. A 73-year-old man with left ICA occlusion and no presence of moyamoya disease criteria underwent xenon-enhanced computed tomography with acetazolamide challenge test. The findings showed hypoperfusion and no vasoreactivity in the ...
Kanazawa R - - 2008
A 68-year-old male presented with a syncopal attack subsequent to acute myocardial infarction. His ultrasonographic and radiological examination revealed severe left internal carotid artery (ICA) stenosis and the presence of a persistent primitive hypoglossal artery (PPHA) immediately distal to the stenosis. The bilateral anterior and left middle cerebral arteries, and ...
Sorteberg Angelika - - 2008
OBJECTIVE: Treatment of certain cerebral aneurysms, caroticocavernous fistulae, and tumors of the neck or cranial base may involve therapeutic arterial sacrifice, which requires preoperative knowledge of the feasibility of permanent occlusion of the internal carotid artery (ICA) or vertebral artery or arteries. METHODS: Retrospective study of transcranial Doppler ultrasonography-monitored angiographic ...
Abou-Chebl Alex - - 2009
BACKGROUND: Strokes from large-vessel atherosclerotic occlusions or severe stenoses are often resistant to re-canalization with thrombolytic agents. As in acute coronary syndromes, angioplasty and stenting for stroke may be used to achieve timely reperfusion with possibly less risk for hemorrhagic complications. METHODS: From a prospectively collected database, we have retrospectively ...
Ozdemir A Ozcan - - 2008
BACKGROUND: Patent foramen ovale (PFO) is an independent risk factor for cerebral infarction. Since ~25% of the population have a PFO, the simple association of PFO with stroke is not enough to establish the diagnosis of paradoxical embolism. We evaluated possible clinical clues to the diagnosis of paradoxical embolism. METHODS: ...
Aladdin Yasser - - 2009
BACKGROUND: Intracranial atherosclerotic stenosis is thought to be responsible for 8% of all ischemic stroke subtypes. Transcranial Doppler (TCD) ultrasonography allows for noninvasive and dynamic evaluation of the cerebral circulation within the circle of Willis. We present a case of recurrent, orthostatic transient ischemic attacks in which, using TCD, we ...
Mazzucco S - - 2009
BACKGROUND AND AIMS: Flow mediated dilation (FMD) of peripheral conduit arteries is a well-established tool to evaluate endothelial function. The aims of this study are to apply the FMD model to cerebral circulation by using acetazolamide (ACZ)-induced intracranial vasodilation as a stimulus to increase common carotid artery (CCA) diameter in ...
Gupta Rishi - - 2009
OBJECTIVE AND IMPORTANCE: Mechanical maneuvers are being utilized more frequently to treat large artery occlusion responsible for acute ischemic stroke. Vasospasm due to vessel irritation during interventions may represent an etiology of poor recanalization in some patients. CASE REPORTS: This report describes 2 patients who developed arterial vasospasm at the ...
Manabe Susumu - - 2008
OBJECTIVE: It is well known that the presence of carotid artery stenosis increases the risk of perioperative stroke in patients undergoing cardiac surgery with cardiopulmonary bypass. Although off-pump coronary artery bypass grafting (CABG) can avoid the adverse effects of cardiopulmonary bypass, the influence of carotid artery stenosis on the incidence ...
Horrow Mindy M - - 2008
Hemodynamically significant stenosis of the internal carotid artery (ICA) is usually diagnosed by elevated velocities in a region of luminal narrowing. Many other significant diagnoses can be made based upon lower-than-normal velocities. Analysis of the combinations of low ICA velocity, abnormal ICA waveform, and abnormal velocities and waveforms in ipsilateral ...
Allendoerfer J - - 2008
In the last decade transcranial color-coded sonography (TCCS) was established as a routine in neurovascular departments for the evaluation of brain-supplying vessels in cerebrovascular diseases. TCCS has demonstrated feasibility and validity for the evaluation of the basal cerebral arteries, especially for the middle cerebral artery (MCA). In some patients an ...
Resende Luiz Antonio de Lima - - 2008
Stroke was probably first described in Psalms 136: 5-6 of the Catholic Bible, and Psalms 137:5-6 of the Evangelical Bible. Based on the Portuguese, Spanish, English, German, Dutch, Russian, Greek, and original Hebrew Bible, the significance of this Psalm is the invocation of a punishment, of which the final result ...
Forsberg Flemming - - 2008
OBJECTIVE: The purpose of this study was to compare peak systolic velocities (PSVs) and the degree of stenosis obtained with a real-time 3-dimensional (ie, 4-dimensional) Doppler ultrasound scanner (Encore PV; VueSonix Sensors Inc, Wayne, PA) to conventional Doppler ultrasound imaging of the carotid arteries (common [CCA], internal [ICA], and external ...
Sengelhoff Christian - - 2008
OBJECTIVE: Neurovascular ultrasound (nUS) is widely used as a screening and monitoring tool in patients with spontaneous cervical artery dissection (sCAD). The aim of the study was to describe the sonographical course of the affected arteries in patients with a MRI-proven sCAD by repetitive nUS. METHODS: Thirty-seven consecutive patients aged<60 ...
Braun Ryan M - - 2008
Carotid duplex Doppler ultrasound (CDDU) is increasingly used for the evaluation of internal carotid artery (ICA) stenosis. In CDDU, velocity measurements are used to estimate the degree of ICA stenosis. Traditionally, radiologists have relied on institutional experience and published research when interpreting CDDU. In 2003, a consensus committee of experts ...
Chang Wei-Lun - - 2008
PURPOSE: Hypereosinophilic syndrome is a rare disorder which can cause ischemic stroke. Although cardioembolism is acknowledged as the most common etiology for stroke, the underlying pathogenesis of hypereosinophilic syndrome could be heterogeneous. Herein we describe a patient with persistent hypereosnophillia with recurrent strokes focusing on the pathogenetic mechanism of stroke. ...
Sorteberg Angelika - - 2008
OBJECTIVE: Treatment of certain cerebral aneurysms, caroticocavernous fistulae, and tumors of the neck or cranial base may involve therapeutic arterial sacrifice, which requires preoperative knowledge of the feasibility of permanent occlusion of the internal carotid artery (ICA) or vertebral artery or arteries. METHODS: Retrospective study of transcranial Doppler ultrasonography-monitored angiographic ...
Diener H C - - 2008
Headache often accompanies acute ischemic stroke. Observational studies indicate that 15 to 40% of patients with acute ischemic stroke report headache in close temporal relation to the event. The onset headache is more often seen in posterior circulation strokes than in strokes in other vascular territories. Transient ischemic attacks (TIA) ...
Hiu Takeshi - - 2008
Percutaneous transluminal angioplasty with stenting (PTA/stenting) for intracranial atherosclerotic stenoses is usually performed without any protection devices. We report a unique case of atherothrombotic stenosis with the vulnerable plaque in the cavernous portion of the internal carotid artery (ICA), which was successfully treated by PTA/stenting under cerebral protection with the ...
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