Search Results
Results 301 - 350 of 1622
< 2 3 4 5 6 7 8 9 10 11 12 >
Majid Y - - 2011
Noninvasive imaging of coronary artery disease is rapidly replacing angiography as the first line of investigation. Multislice CT is the non-invasive modality of choice for imaging coronary artery disease and provides high speed with good spatial resolution. CT coronary angiography in addition to detecting and characterising atherosclerotic coronary artery disease ...
Henjes Christiane R - - 2011
Diagnosis of extracardiac intrathoracic vascular anomalies is of clinical importance, but remains challenging. Traditional imaging modalities, such as radiography, echocardiography, and angiography, are inherently limited by the difficulties of a 2-dimensional approach to a 3-dimensional object. We postulated that accurate characterization of malformations of the aorta would benefit from 3-dimensional ...
Tang Yamei - - 2010
A 39-year-old Chinese man developed ocular ischemic syndrome (OIS) in both eyes 14 years after radiation therapy for nasopharyngeal squamous cell carcinoma. Digital subtraction angiography disclosed occlusion of common carotid arteries and stenosis of both vertebral arteries. Following stenting of the vertebral arteries, visual function improved and ophthalmoscopic abnormalities of ...
Youssef A Samy - - 2010
The extradural portion of the vertebral artery (VA-V3) has a unique anatomy at the craniovertebral junction. The exposure of V3 can be accompanied by profuse bleeding from the venous plexus in addition to the potential risk of inadvertent injury of the VA during surgery at the craniovertebral junction. The natural ...
Tobin W Oliver - - 2010
A 48-year-old man presented with a posterior circulation stroke secondary to left lateral medullary infarction. Contrast-enhanced magnetic resonance angiography (CEMRA) revealed 40-45% intracranial left vertebral artery stenosis, likely atherosclerotic in nature. CEMRA and subsequent computed tomography angiography also identified a duplicate origin of the left vertebral artery. The importance of ...
Kotzé S H - - 2010
Bathyergus suillus are subterranean rodents found in the Western Cape of South Africa, where they inhabit sandy, humid burrows. Vertebral venous plexuses around the vertebral column have been implicated in aiding the maintenance of a constant central nervous system temperature via its connections with muscles and interscapular brown adipose tissue. ...
Eskander Mark S - - 2010
The aim of this study is to characterize the anatomy of vertebral arteries using magnetic resonance imaging scans of 250 consecutive patients. To document the prevalence of midline vertebral artery (VA) migration in a subgroup of patients presenting with neck pain, radiculopathy, or myelopathy and to identify the course of ...
Rolph R - - 2010
Objectives To clarify how carotid and vertebral dissections present. Presentation and outcome data were recorded for all cervical arterial dissections reported radiologically between 2005 and 2009. Results 15 cases were identified. Symptoms associated with nine vertebral artery dissections were vomiting, vertigo and ataxia. All except one had cerebellar signs. On ...
Greiner Hansel M - - 2010
Rotational vertebral artery occlusion (RVAO), sometimes known as "Bow hunter syndrome," is an important and diagnostically challenging cause of posterior circulation stroke in children. It is caused by impingement of osseous and/or ligamentous structures on the vertebral artery. We review the differential diagnosis and recommended workup for posterior circulation stroke ...
Cardoso Mario J - - 2010
Pedicle screw placement in the proximal thoracic spine may result in unwanted bicortical breach. An understanding of the potential structures at risk is paramount to safe screw placement. To assess the anatomic location of structures at risk with the placement of bicortical pedicle screw fixation in the proximal thoracic spine. ...
Fiorella David - - 2010
The Pipeline embolization device (PED) is a new endoluminal construct designed to exclude aneurysms from the parent cerebrovasculature. We report the very late (>1 year) thrombosis of a PED construct placed for the treatment of a left vertebral aneurysm. A patient with an occluded right vertebral artery and a large, ...
Gordhan Ajeet - - 2010
This technical note describes a complication related to the use of the Merci embolectomy device not previously reported. The device can induce critical flow limitation within an accessed vessel because of a combination of vasospasm and anatomic conformational changes. Furthermore, this can limit the safe removal of the device from ...
D'Antoni Anthony V - - 2010
The anatomy of the muscular branches of the vertebral arteries has clinical relevance during surgical procedures, suboccipital injections, and manual therapies. Each vertebral artery is divided into four segments. Segment V3, found in the suboccipital triangle, courses posteromedially around the lateral mass to lie in a groove on the posterior ...
Phillips John - - 2010
"Migraine associated vertigo" is emerging as a popular diagnosis for patients with recurrent vertigo. However, in view of our current understanding of both migraine and vertigo, "migraine associated vertigo," in contrast to basilar artery migraine, is neither clinically nor biologically plausible as a migraine variant.
Kim Esther S H - - 2010
The appearance of the vertebral artery (VA) waveform on a pulsed Doppler examination performed during standard carotid duplex ultrasonography (CDU) may suggest vertebrobasilar disease. We sought to determine the radiographic importance of high-resistive (HR) pulsed Doppler VA waveforms seen on CDU. The Noninvasive Vascular Laboratory database was queried for CDU ...
Pascual-Castroviejo I - - 2010
We report on a girl with a left facial hemangioma and absence of the right ear and canal who also showed absence of the left vertebral and anterior cerebral arteries (ipsilateral to the facial hemangioma), and absence of the external carotid artery and presence of stapedial artery on the right ...
Chung Joonho - - 2010
We report a patient with a right vertebral artery (VA) dissecting aneurysm who was treated by placing an Enterprise stent (Cordis Neurovascular, Miami Lakes, FL) from the proximal VA to the posterior inferior cerebellar artery (PICA) in order to save the patency of the PICA. A 47-year-old man was admitted ...
Watanabe Tatsuaki - - 2010
We report a patient with left apical lung carcinoma involving the left subclavian artery with the origin of the vertebral artery who had hypoplasia of the right vertebral artery and the bilateral posterior communicating arteries. After induction chemoradiotherapy, a vein graft was used to create a bypass between the left ...
Charles Yann Philippe - - 2011
The aim of this study was to describe the preoperative topography of the Adamkiewicz artery and the blood supply of the lumbosacral spinal cord in patients who underwent spinal surgery. The relevance for anterior approaches of the thoracolumbar spine was then analyzed. One hundred consecutive spinal angiographies were reviewed. Surgical ...
Chuang Y M - - 2011
Objectives To test the hypothesis that vertebral artery hypoplasia (VAH) may affect the lateralisation of vestibular neuropathy (VN), probably through haemodynamic effect on the vestibular labyrinth. Methods 69 patients with unilateral VN were examined with a magnetic resonance angiographic (MRA) and caloric test. 50 healthy subjects served as controls. The ...
Czabanka Marcus - - 2011
Endovascular occlusion of hemorrhagic dissecting aneurysms of the vertebral artery (VA) is not possible when the posterior inferior cerebellar artery (PICA) originates from the dissecting aneurysm or when the contralateral VA provides inadequate collateral blood flow to the distal basilar circulation. The authors introduce a VA-PICA bypass with radial artery ...
Créac'h Christelle - - 2010
Symptomatic cluster-like headaches have been described with lesions of the trigeminal and parasympathetic systems. Here, we report the case of a 44-year-old woman with continuous auricular pain and a positional cluster-like headache associated with red ear syndrome. Clinical data and morphological investigations raised the hypothesis of a neurovascular compression between ...
Kawano Hiroyuki - - 2010
There are very few reports describing the presence of a stump embolism after vertebral artery occlusion. We describe three patients who presented with posterior circulation ischemic strokes after vertebral artery occlusion. These patients were successfully treated with anticoagulation therapy without surgical or endovascular treatment.
Heo D H - - 2010
Injury to spinal segmental arteries may potentially occur during spinal surgery, particularly during anterior or minimally invasive approaches. Use of a noninvasive radiologic tool to evaluate these arteries before surgery may reduce this risk. We performed spinal CT angiography and reconstructed 3D images of segmental arteries in 41 patients. We ...
Xie Tao - - 2010
We present a case of a 45-year-old male patient with left hemifacial spasm for 6 years. Magnetic resonance tomographic angiography confirmed that there were small vessels adjacent to the left facial nerve root entry zone, but the left internal carotid artery (ICA) was absent. Magnetic resonance angiography using three-dimensional time ...
Lv Xianli - - 2010
To report clinical outcomes of lower cranial nerve palsy (LCNP) caused by vertebral artery (VA) aneurysms. Seventy-two patients with VA aneurysms, who were treated endovascularly between 2001 and 2008, were retrospectively studied to identify patients presenting LCNP without hemorrhage. LCNP occurred in 12 patients (16·7%) initially caused by VA aneurysms: ...
Kono Atsushi K - - 2010
PURPOSE: Loeys-Dietz syndrome (LDS) is a connective tissue disease caused by mutations in the genes encoding the transforming growth factor-beta receptor (TGFBR). LDS is associated with aneurysms or dissections of the aorta similar to Marfan syndrome (MFS) as well as arterial tortuosity and aneurysms in the peripheral arteries. The purpose ...
Sun Yu - - 2010
BACKGROUND/PURPOSE: High homocysteine (Hcy) concentration is associated with slow coronary flow. This study examined the association between Hcy and hemodynamic status in the extracranial cerebral arteries in healthy individuals. METHODS: A total of 535 healthy adults underwent physical examination and duplex ultrasonography of the extracranial carotid and vertebral arteries, and ...
Stiefel Michael F - - 2010
OBJECTIVE: Atherosclerotic stenosis or obstruction of the innominate artery is rare. Traditional surgical management is a technically demanding intervention with acceptable, but not negligible, rates of morbidity and mortality. Endovascular approaches to supraaortic lesions have been successful and are now the preferred treatment for stenoses of the brachiocephalic vessels. The ...
Dahdaleh Nader S - - 2010
Multiple symptomatic vertebral artery (VA) loops are rare and their management is challenging. A 55-year-old man presented with a 5-year history of frequent episodes of presyncope and mild left C5 radiculopathy that was exacerbated by flexion or extension of his neck. Examination revealed complex left VA loops at C2/3 and ...
Paluszkiewicz Piotr - - 2010
Serious bleeding from a ruptured adrenal mass limits preoperative diagnostics and can necessitate urgent laparotomy to control blood loss. A 45-year old man underwent an emergency laparotomy due to severe retroperitoneal haemorrhage causing hypovolaemia. Detailed retroperitoneal dissection after splenectomy and clamping of the abdominal aorta revealed bleeding from a ruptured ...
Divani Afshin A - - 2010
The objective of the study was to gain a better understanding of brain artery diameters and anatomical variations for precise modification of cerebral blood supply in ischemic stroke models. Sprague-Dawley rats (n = 35) were used for the experiment. Rats were perfused and resin replicas of cerebral arteries were created using a ...
Mandalà Marco - - 2010
This study describes a patient with lateral medullary ischemia (LMI) presenting with persistent hiccups followed by vertigo with horizontal head-shaking-induced contralesional nystagmus (HSN) and discusses pertinent pathophysiology. A 65-year-old man presented with persistent hiccups and disabling spells of vertigo, lasting 30 seconds that became much more frequent and associated with ...
Ishikawa Mami - - 2010
Under an operative view, an aneurysm of the vertebral artery is located behind the lower cranial nerves. To prevent neurological deficits we employed electrophysiological monitoring while clipping an aneurysm of the vertebral artery. A 64-year-old woman had suffered a sudden severe headache in the morning. Computed tomography (CT) revealed a ...
Nasir Sadaf - - 2010
A 50 years old male was admitted with sub-arachnoid haemorrhage. Angiographic examination revealed an abnormal origin of the right vertebral artery from the right external carotid artery. Multiple variations in the origin of right vertebral artery have been reported in literatures. Anomalous origin of the right vertebral artery from the ...
Dublin Arthur B - - 2010
Previous reports suggest a generally successful experience with embolotherapy of vertebral arteriovenous fistulas of the neck. However, potential complications do exist, as shown by this report documenting spinal cord ischemia secondary to compromise of a dominant spinal artery arising from the proximal aspect of the right vertebral artery.
Bruneau Micha?l - - 2010
BACKGROUND: The endovascular treatment of intracranial aneurysms can be hampered by the tortuosity of extracranial vessels. Percutaneous or surgical vessel puncture can resolve the problem of inaccessibility. OBJECTIVE: We describe rerouting of a kinked vertebral artery (VA) to restore transfemoral endovascular access to an aneurysm. CASE REPORT: A 63-year-old woman ...
Panda Samhita S Department of Neurology, National Institute of Mental Health and Neurosciences, Bangalore, - - 2010
Craniovertebral anomalies are rare causes of vertebral artery dissection. Therefore, appropriate evaluation is necessary in vertebrobasilar strokes, specially in the young. This is particularly true for patients with vertebral stroke without risk factors. Here we report a 24-year-old male presenting with posterior circulation infarcts. The patient had no obvious vascular ...
Tsai Yu-Duan - - 2010
STUDY DESIGN: Case report. OBJECTIVE: To report a rare case of anterior spinal cord syndrome caused by a cement embolism in the anterior spinal artery after vertebroplasty. SUMMARY OF BACKGROUND DATA: Vertebroplasty is commonly performed for the management of pain associated with benign compression fractures, multiple myelomas, lymphomas, vertebral metastatic ...
Arauz Antonio - - 2010
BACKGROUND AND PURPOSE: We investigated the predictors and time course for recanalization after vertebral artery dissection. METHODS: We prospectively studied 61 consecutive patients with confirmed diagnoses of vertebral artery dissection without intracerebral hemorrhage. Neuroimaging and clinical follow-up were performed at presentation and at 3, 6, and 12 months. RESULTS: We ...
Bruneau Micha?l - - 2010
INTRODUCTION: We evaluated the feasibility, usefulness, and limitations of near-infrared indocyanine green (ICG) videoangiography during procedures involving the extracranial vertebral artery (VA). METHODS: Nine patients (2 women, 7 men; mean age, 55 years) were evaluated at 2 neurosurgical centers. Near-infrared ICG videoangiography was applied during transposition and rerouting of the ...
Li Yuhui - - 2010
A 57-year-old man presented with subarachnoid hemorrhage caused by a dissecting aneurysm of the vertebral artery close to the origin of the posterior inferior cerebellar artery (PICA). The aneurysm was treated successfully with two fenestrated clips preserving the efferent artery with anterograde blood flow without PICA anastomosis. The postoperative course ...
Savica Rodolfo - - 2010
We report a case of a 76-year-old woman admitted to our institution with sudden onset of dizziness and vertigo followed by vomiting and blurred vision. Her medical history was remarkable for hypertension, diabetes, and ischemic stroke in the territory of the left cerebral median artery. Her symptoms were suggestive of ...
Kato Masayasu - - 2010
A 45-year-old woman presented with subarachnoid hemorrhage of World Federation of Neurosurgical Societies grade IV. Cerebral angiography showed a dissecting aneurysm of the right vertebral artery (VA). Internal trapping of the right VA with coils was performed. The postoperative course was uneventful, but she continued to demonstrate moon facies and ...
Araki Shinobu - - 2010
A 61-year-old man presented with a ruptured vertebral artery dissecting aneurysm manifesting as severe headache, which was treated by internal trapping, and later resulted in recanalization of the affected vertebral artery without aneurysm recurrence. Computed tomography revealed subarachnoid hemorrhage caused by a dissecting right vertebral artery aneurysm located just distal ...
Nourbakhsh Ali - - 2010
OBJECT: The purpose of this study was to find a landmark according to which the surgeon can dissect the cervical spine safely, with the lowest possibility of damaging the vertebral artery (VA) during anterior approaches to the cervical spine or the VA. METHODS: The "safe zone" for each level of ...
Stavrinou Lampis C - - 2010
Background. Aneurysms of the extracranial vertebral artery are rare and can provide a diagnostic and therapeutic challenge. Methods. We reviewed the clinical history of a patient presenting with cervical radiculopathy, who harboured an extracranial vertebral artery aneurysm eroding the cervical spine. Results. CT Angiography and MR Angiography set the diagnosis, ...
Matti Albert I - - 2010
To describe a rare presentation of vertebral artery dissection (VAD) as a small but congruous incomplete homonymous hemianopia demonstrating use of visual field testing in the diagnosis. A 30 year old woman had been unwell for 4 months with difficulty focusing, vertigo, dizziness and a feeling of falling to the ...
Ciappetta P - - 2009
Aneurysms arising from the extracranial portion of the posterior-inferior cerebellar artery (PICA) are considered extremely rare. To date, only ten cases have been reported in the literature. The authors report a case of a 29 year-old male patient admitted comatose in Hunt-Hess grade IV because of an subarachnoid haemorrhage predominantly ...
Jozwik Krzysztof - - 2010
Vertebral arteries are two arteries whose structure and location in human body result in development of special flow conditions. For some of the arteries, one can observe a significant difference between flow rates in the left and the right arteries during ultrasonography diagnosis. Usually the reason of such a difference ...
< 2 3 4 5 6 7 8 9 10 11 12 >