Search Results
Results 401 - 450 of 1595
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Kansagra Akash P - - 2008
PURPOSE: To demonstrate the use of a noninvasive arterial spin labeling (ASL) MRI technique and evaluate vertebral artery (VA) territories in the brain. MATERIALS AND METHODS: Vessel-encoded ASL was used to determine the territories of the left and right VAs in five healthy subjects. Territory maps were analyzed quantitatively by ...
Kim Joo Pyung - - 2008
Hemifacial spasm (HFS) is considered as a reversible pathophysiological condition mainly induced by continuous vascular compression of the facial nerve root exit zone (REZ) at the cerebellopontine angle. As an offending vessel, vertebrobasilar artery tends to compress much more heavily than others. The authors analyzed HFS caused by vertebrobasilar artery ...
Park Kwan-Woong - - 2008
When a tear occurs in one of the major cervicocerebral arteries and allows blood to enter the wall of the artery and split its layers, the result is either stenosis or aneurysmal dilatation of the vessel. Vertebral artery dissection (VAD) is an infrequent occurrence but is a leading cause of ...
Kim J - - 2008
BACKGROUND AND PURPOSE: The tuberothalamic artery (TTA), one of the arteries supplying the paramedian thalamic area, is peculiar because it originates from the posterior communicating artery (p-comA), which connects the vertebrobasilar and carotid systems. METHODS: From Stroke Registry, 23 consecutive patients with an acute infarction involving the TTA were selected. ...
Harper Carl - - 2008
Reversal of flow in the extracranial vertebral artery secondary to a proximal subclavian/innominate artery stenosis or occlusion is a frequent finding during carotid duplex ultrasonography. The characteristics of basilar artery flow are not well defined in these patients. The objective of this study is to evaluate basilar artery flow in ...
Ducluzeau P-H - - 2008
AIM: To demonstrate that ultrasound screening of diabetic patients presenting with no cerebrovascular symptoms for evaluation of atheroma of the cervical arteries can be limited to the carotid arteries. METHODS: We retrospectively analyzed the results of cervical artery ultrasound imaging of diabetic patients with no cerebrovascular symptoms. This diabetic population ...
Bayrak Ilkay Koray - - 2009
The aim in this study was to evaluate the effect of cervical spondylosis on vertebral arterial flow. The flow changes on Doppler measurements in patients with vertigo were also assessed. Ninety-one patients with different grades of degeneration on disks and apophysis were evaluated. The severity of degeneration was determined by ...
Koch Sebastian - - 2009
BACKGROUND: Despite remaining an important cause of posterior circulation stroke, the non-invasive diagnosis of vertebral artery origin (VAo) stenosis is problematic. We here examine peak systolic velocity (PSV) criteria for the diagnosis of VAo stenosis and assess if the PSV ratio at the origin to the distal segments improves diagnostic ...
Tubbs R S - - 2008
Variations in the cerebrovascular tree can increase surgical or interventional morbidity. To date, only scant comments are to be found in the literature regarding intraluminal variations of the basilar artery. To further elucidate such anatomy, a cadaveric study was performed. One hundred and fifty human brains were evaluated for the ...
Bhogal Ricky Harminder - - 2008
INTRODUCTION: Mycotic aneurysm of the aorta is a rare, dangerous condition. We report a case of an abdominal aortic aneurysm (AAA) caused by Candida albicans. METHODS: Case report and review of pertinent English-language literature. CASE REPORT: A 48 year-old man presented with an acute exacerbation of long-standing back pain. Examination ...
Hiwatashi Akio - - 2008
Glossopharyngeal neuralgia is rare but causes severe pain. We retrospectively evaluated preoperative MR images of patients with glossopharyngeal neuralgia caused by neurovascular compression. MRI may be beneficial in patients with glossopharyngeal neuralgia and an offending compressing artery. If the offending vessel was the posterior inferior cerebellar artery (PICA), a loop ...
Rabellino Martin - - 2009
Endoleak is a frequent complication after endovascular repair of aortic rupture. We describe the case of a female patient with traumatic aortic injury, treated with endograft, who developed a type II endoleak through the left subclavian and vertebral arteries. Both arteries originated independently from the aortic arch, and were managed ...
Bhayani Nikhil - - 2008
We report a case of varicella-zoster vasculopathy that occurred in a 42-year-old renal transplant recipient with concurrent vertebral artery aneurysm and dissection. The patient was successfully treated with embolization and acyclovir therapy. Here, we review the English literature regarding the association of varicella-zoster virus infection with cerebral aneurysm.
Sancak Tanzer - - 2008
An endovascular intervention is a feasible alternative to the technically challenging conventional surgery for the treatment of traumatic vertebral arterial lesions. This report describes a rare case involving a 22-year-old patient with a traumatic vertebral arterial pseudoaneurysm and multiple arteriovenous fistulas which were successfully sealed using the endovascular stent-graft technique.
Batt Michel - - 2008
The authors report three cases of transient and recurrent paraplegia due to compression of the second right lumbar artery by the diaphragmatic crus. Circumstances of appearance are suggestive when paraplegia occurs in dorsolumbar hyperlordosis and low cardiac output is an associated hemodynamic risk factor. Selective medullary arteriography is indispensable for ...
Horie N - - 2008
A 30 year old female with a fusiform aneurysm of the cervical vertebral artery causing nerve root compression and associated with neurofibromatosis-1 was successfully treated with endovascular methods which resolved the mass effect. This is the first report demonstrating the reduction of the mass effect of an aneurysm on a ...
Kratz Sabrina N - - 2011
Vertebral artery dissection is a lesser known but significant cause of stroke in young, healthy people. Given its infrequency of presentation, emergency physicians may not always recognize its common symptoms-vertigo, diplopia, ataxia, and dysarthria-as a stroke. In this case report, we describe a patient with vertebral artery dissection presenting with ...
Kashimura Hiroshi - - 2008
A technique for exposing the vertebrobasilar junction with traction of the dentate ligament is described for treatment of large vertebral artery (VA) aneurysms via the far lateral suboccipital approach with partial condylar resection. The most rostral attachment of the dentate ligament is divided above the site where the VA pierces ...
Scott Marie Tedesco - - 2008
Jorge Mura, M.D. performed the microsurgery presented in this report on August 22, 2006 at the Institute of Neurosurgery Asenjo in Santiago, Chile. A highly vascularized tumor was present in the patient's only functional vertebral artery. Intraoperative neuromonitoring was conducted throughout the procedure. Following resection of the tumor and completion ...
Wang Weijun - - 2008
The risk of impingement of the aorta associated with thoracic vertebral screw or pedicle screw instrumentation in the treatment of thoracic scoliosis has been an important concern. To understand this phenomenon more systematically, the relative position of the aorta with reference to the thoracic vertebrae in right thoracic adolescent idiopathic ...
Miele Vincent J - - 2008
STUDY DESIGN: A rare case of subaxial vertebral artery (VA) positional occlusion is reviewed and treatment methods discussed. OBJECTIVE: The decision process involved in treating subaxial VA positional occlusion is reviewed. SUMMARY OF BACKGROUND DATA: Bow Hunter stroke is a symptomatic vertebrobasilar insufficiency caused by stenosis or occlusion of the ...
Lin Lang - - 2008
OBJECTIVE: To determine the ischemic lesions distribution and extension of patients with basilar artery thrombosis by the means of magnetic resonance imaging (MRI). METHODS: In 17 patients with thrombosis of the basilar artery, MRI was performed, including T2-weighted, magnetic resonance angiography (MRA) and diffusion-weighted imaging (DWI) sequences in the short-term ...
Hard Jonathan M - - 2008
We report a novel approach to treatment of an unexpected complication of vertebroplasty. During initial positioning of transpedicular vertebroplasty needles in a 73-year-old woman, we encountered unexpected ease of needle advancement resulting in progression of the needle through the anterior cortex of the thoracic vertebral body. The transpedicular needle advanced ...
Kim Sang-Dae - - 2008
Spontaneous spinal subdural hematoma (SDH) is an uncommon cause of acute spinal cord compression. When it does occur, however, it may have disastrous results and a poor prognosis. The nontraumatic acute spinal SDH usually results from a defect in a hemostatic mechanism (such as coagulopathy or the use of anticoagulant ...
Simsek Serkan - - 2008
The sulcus of the vertebral artery is located behind the lateral mass of the atlas and in some cases is converted into a foramen by anomalous ossification known as the posterior ponticulus (osseous bridge). This study involved anatomical observations of 158 isolated anatomical specimens of dry C1 vertebrae. The incidence ...
Siddiqui A - - 2008
Here, we describe neuroimaging findings of an unusual case of severe vertebrobasilar dolichoectasia producing obstructive hydrocephalus. CT and MRI performed in a 71-year-old woman presenting with clinical features of raised intracranial pressure revealed severely ectatic and tortuous vertebral and basilar arteries. The ectatic basilar artery was causing compression and flattening ...
Hong Michael K-Y - - 2008
OBJECT: The angiosome concept has been the subject of extensive research by the senior author (G.I.T.), but its specific applicability to the spinal cord was hitherto unknown. The aim of this study was to see if the spinal cord vasculature followed the angiosome concept and to review the usefulness of ...
Shirakawa Manabu - - 2008
A 58-year-old man presented with a traumatic vertebro-vertebral arteriovenous fistula (VVAVF) after attempting suicide by thrusting scissors into his right anterior cervical region. Two months later he noticed weakness and numbness of the right upper extremity. Examination revealed bruit in the right neck, no cranial nerve palsy, and weakness of ...
Mercier P H PH Laboratoire d'Anatomie, Faculté de Médecine, Angers cédex, France - - - 2008
This study of 25 brains at the pontomedullary junction defined the different possible origins of the perforating arteries and lateral spinal arteries in relation to the posterior inferior cerebellar arteries (PICAs). - If the PICA emerges from the common trunk of the AICA-PICA coming from the basilar artery, it never ...
Gdynia Hans-Jürgen - - 2008
Dissections of the carotid or vertebral arteries are a significant cause of ischemic stroke. Their etiology includes not only mechanical forces but also underlying arteriopathies such as Ehlers-Danlos syndrome type IV and other connective tissue disorders. Furthermore, dissections often occur spontaneously or after minor trauma in otherwise healthy individuals without ...
Ucerler H - - 2008
The conventional approach to the fourth ventricle is by splitting the vermis on the suboccipital surface of the cerebellum. By a unilateral transcerebellomedullary fissure approach, it is possible to provide sufficient operative space from cerebral aqueduct to obex without splitting the vermis. This approach needs meticulous dissection of the cerebellomedullary ...
Park J S - - 2008
BACKGROUND: The aim of this study was to report further investigation of neurovascular compression as a cause of hemifacial spasm (HFS) and to provide useful surgical guidelines by describing the compression patterns. MATERIAL AND METHODS: From January 2004 to February 2006, 236 consecutive patients with HFS underwent microvascular decompression (MVD) ...
Petridis A K - - 2008
We report a patient who suffered drop attacks during head reclination. Computer tomography of the cervical spine demonstrated a stenotic right vertebral artery at C4/5. However, Doppler ultrasonography of the vertebral artery showed no abnormality. Angiography confirmed complete occlusion of the left vertebral and a stenosis of the right vertebral ...
Baracchini Claudio - - 2008
BACKGROUND AND PURPOSE: The etiology of spontaneous cervical artery dissection (sCAD) is still unknown, even though an underlying arteriopathy impairing vasomotion has often been suspected. This study was undertaken to investigate: (1) spontaneous, (2) endothelial-dependent, and (3) endothelial-independent vasodilation in patients with multiple sCAD. METHODS: In 19 consecutive patients with ...
Marti Sarah - - 2008
Whether the rotational vertebral artery syndrome (RVAS), consisting of attacks of vertigo, nystagmus and tinnitus elicited by head-rotation induced compression of the dominant vertebral artery (VA), reflects ischemic dysfunction of uni- or bilateral peripheral or central vestibular structures, is still debated. We report on a patient with bilateral high-grade carotid ...
Zhao Liujun - - 2008
STUDY DESIGN: This study assessed the relationship of the vertebral artery and the transverse foramens in the lower cervical spine by computer tomographic angiography (CTA) measurements. OBJECTIVE: To study the location and the size of the vertebral artery in relation to the transverse foramens in the lower cervical spine. SUMMARY ...
Horiuchi Tetsuyoshi - - 2008
BACKGROUND: Intraoperative cerebral angiography has been known as a useful tool for diagnosing neurovascular diseases. There are few reports of intraoperative angiography in the prone position. Intraoperative angiograms through the occipital artery and muscular branch of the vertebral artery have not also previously been described. METHODS: The occipital artery or ...
Gupta Tulika - - 2008
BACKGROUND: The location of the vertebral artery on a groove on the superior surface of the posterior arch of atlas makes it vulnerable to injury during surgical procedures in this region. Knowledge of the quantitative anatomy of the vertebral artery groove is therefore necessary. METHODS: In 55 dry adult atlas ...
Songur Ahmet - - 2008
AIM: The aim of our study was to demonstrate some possible variations in the vertebrobasilar system (VBS) in the Turkish population and to compare our results with the literature. MATERIALS AND METHODS: The VBS samples were taken from 109 fresh forensic autopsies and one anatomic cadaver. The widths of the ...
Son Kuk Hui - - 2008
Percutaneous vertebroplasty is a minimally invasive technique that is used to treat vertebral fractures, tumors and osteolytic vertebral metastases. However, cement leakage to the venous system is a potential source of serious complications after percutaneous vertebroplasty. We report a 65-year-old female patient who demonstrated cardiac perforation, pulmonary cement embolism, and ...
Cerrato Paolo - - 2008
Cervical artery dissection is an important cause of stroke in young patients and accounts of 10%-20% of stroke or TIA in patients aged less than 50 years. Basilar artery occlusion (BAO) is an infrequent cause of acute stroke, which invariably leads to death or long-term disability if not recanalized. We ...
Kakino Shunsuke - - 2008
BACKGROUND: Symptomatic atherosclerotic steno-occlusive diseases of the vertebrobasilar artery portend a poor prognosis and high risk of stroke recurrence despite medical therapy. We describe 5 medically refractory patients with occlusion at the origin of the VA and the distal portion of the cervical VA perfused via muscular collateral vessels who ...
Barth P G - - 2008
We report a case of congenital brainstem disconnection including the second detailed autopsy. A full-term newborn presented with irreversible apnoea and died on the fifth day. MRI revealed disconnection of the brainstem. The autopsy included a series of transverse sections of the mesencephalon, medulla oblongata and bridging tissue fragments. A ...
Lim Sang Ho - - 2008
Percutaneous vertebroplasty is a minimally invasive procedure in which polymethylmethacrylate polymer is used to treat painful diseased vertebral bodies. However, despite its minimally invasive nature and relative safety, cement leakage beyond involved vertebral bodies into the venous system can induce devastating cardiovascular complications. Here, the authors report a case of ...
Compter A - - 2008
BACKGROUND: Twenty to 30 percent of all transient ischaemic attacks and ischaemic strokes involve tissue supplied by the vertebrobasilar circulation. Atherosclerotic stenosis >/= 50% in the vertebral artery accounts for vertebrobasilar stroke in at least one third of the patients. The risk of recurrent vascular events in patients with vertebral ...
AteĊŸ Ozkan - - 2008
OBJECT: The microsurgical anatomy of the occipital artery (OA) was studied to describe the diameter, length, and course of this vessel as it pertains to revascularization procedures of the posterior cerebral circulation. METHODS: The authors studied 12 OAs in 6 cadaveric heads that had been injected with colored latex. They ...
Kubikova E - - 2008
This study presents and describes the variation of the vertebral artery arising from the aortic arch as a case report. This variation was found in one of the cadavers at the Institute of Anatomy of Medical Faculty of Comenius University in Bratislava. Anomalous arising was discovered during the student's dissection ...
Wynd Shari - - 2008
BACKGROUND: Serious adverse events such as cervical artery dissection (CAD) have been reported to occur following cervical spine manipulation therapy (cSMT). To investigate the relation between these events, we utilized an animal model to determine if vertebral arteries with a suspected susceptibility factor (wall lesion) could be injured further by ...
Lescanne Emmanuel - - 2008
The microanatomy of the cerebellopontine cistern (CPC) is of interest to many surgeons and has been the subject of controversial works especially concerning the study of the subarachnoid space in the internal acoustic meatus (IAM). The CPC lies in the cerebellopontine angle between the brainstem, cerebellum and petrous bone. It ...
Manninen Hannu - - 2008
BACKGROUND: The aim of this study was to assess hemodynamic consequences of increasingly common coverage of the left subclavian artery (LSA) during endovascular stent-graft repair for thoracic aortic disease without surgical revascularization. We considered that critical arteries to examine are the right vertebral artery and posterior communicating arteries (PComA) because ...
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