Search Results
Results 601 - 650 of 1623
< 8 9 10 11 12 13 14 15 16 17 18 >
Mahadevia Ankit A - - 2005
Endovascular management of vertebral artery stenosis has been shown to have significantly better outcomes than surgical therapy or medical therapy alone. The average mortality is zero and morbidity is about 1%. There is a 97% procedural success rate. The issue is a restenosis rate that is between 30% and 41%. ...
Huntoon Marc A - - 2005
Cervical transforaminal epidural steroid injections are performed for the treatment of radicular pain. Multiple recent case reports have raised safety concerns regarding neurologic deficits such as anterior spinal artery syndrome and cerebellar injury after these injections. To investigate the potential causes of these injuries, an anatomic study was conducted. In ...
Taneichi Hiroshi - - 2005
STUDY DESIGN: A prospective study using magnetic resonance angiography (MRA) on a consecutive cohort of patients with cervical spine injuries. OBJECTIVE: To investigate clinical and radiographic features of vertebral artery injury/occlusion associated with nonpenetrating cervical spine trauma. SUMMARY OF BACKGROUND DATA: With the popularization of MRA, vertebral artery injury has ...
Nowak Dennis A - - 2006
The dorso-lateral medullary syndrome (Wallenberg's syndrome) is produced by infarction of a wedge of lateral medulla posterior to the inferior olivary nucleus and is usually caused by vertebral artery occlusion. Ipsilateral axial lateropulsion as an initial symptom of vertebral artery occlusion is rather rare and the anatomical structure responsible is ...
Sharifi Mansoor - - 2005
The choroid plexus of the fourth ventricle consists of two symmetrical parts located in the roof of the ventricle and protruding through its openings, the foramina of Luschka and Magendie. The arteries supplying the choroid plexus of the fourth ventricle are difficult to approach because of their deep location within ...
Endo Hidehiko - - 2005
A 47-year-old man presented with a ruptured vertebral artery dissecting aneurysm manifesting as subarachnoid hemorrhage followed by acute occlusion and early recanalization of the affected artery. Cerebral angiography 2 hours after the onset of the symptom showed pearl-and-string sign in the right vertebral artery. Serial angiography showed that the affected ...
Liu Chung-Pin - - 2005
Endoluminal stent placement is safe and effective in the treatment of symptomatic ostial stenoses of the vertebral artery (VA) and proximal subclavian artery (SCA). However, determining the relative importance of an individual lesion on angiography is difficult when VA and SCA stenoses are concurrent. Pressure-sensing wires help in determining the ...
Singh Devender - - 2005
Giant mycotic pseudoaneurysms of the vertebral artery are extremely rare. Their management is technically challenging because of the distorted anatomy and intimate relation to the lower cranial nerves. We present a rare case of a 7-year-old boy referred to us by a pediatrician who was treating him for bacterial endocarditis. ...
Seemann Jörg H - - 2005
For years, intra-arterial brachytherapy has been a recognized method for treating recurrent stenosis after percutaneous transluminal angioplasty and stent placement. However, its use in arteries supplying the brain has not been described to date. We report a case treated with intra-arterial brachytherapy for high-grade recurrent stenoses of the high cervical ...
Cokkeser Ya┼čar - - 2005
OBJECTIVES: To study the surgical anatomy of the vertebral artery at the craniocervical junction and its related structures defining reliable landmarks for its safe exposure. DESIGN: Ten sides of 5 fresh cadavers were dissected using the lateral approach to the craniocervical junction. RESULTS: Experience gained in studying the anatomic details ...
Cagnie Barbara - - 2005
This report covers a case in which the right vertebral artery (VA) did not participate in the formation of the basilar artery. The artery had an external diameter of about 1 mm. It ran trough the transverse foramina of C6 through C2, then turned backward and entered the spinal canal ...
Güvençer Mustafa - - 2006
OBJECTIVE: The second segment of the vertebral artery is under the risk of injury during anterior and anterolateral cervical spine procedures. To avoid such a risk, one needs to be familiar with the regional anatomy. The aim of this study was to measure the distance between the vertebral artery and ...
Haynes Michael J - - 2005
OBJECTIVE: To determine whether the presence of posterior ponticles markedly increases by 30% or more, the incidence of major rotational stenosis of vertebral arteries. METHODS: Doppler ultrasound studies were performed in 3 private chiropractic clinics and in the radiology department of a public hospital, and magnetic resonance angiography (MRA) studies ...
Cagnie Barbara - - 2005
OBJECTIVE: To describe a case of a simultaneous occurrence of an ossified stylohyoid ligament in a 56-year-old male cadaver and anomalies of the vertebral artery, and to consider the clinical implications for manipulative therapists. INTERVENTION AND OUTCOME: Dissection showed a simultaneous occurrence of complete developmental ossification of the left hyoid ...
Yeh Ju-Fen - - 2005
Rotational movements in the territory of vertebrobasilar artery of the head and neck can induce vertebrobasilar insufficiency (VBI) or infarction. The term "bow hunter's stroke" or "rotational VBI" has been used to describe this clinical syndrome. In most cases, symptoms were provoked because of involvement of a dominant vertebral artery ...
Liu Sheng - - 2005
OBJECTIVE: To explore the clinical characteristics and new treatment for syndrome of craniocerebral-cervical vertebral injury. METHODS: The clinical data of 52 patients with head injury accompanied by neck injury were analyzed retrospectively. RESULTS: Craniocerebral injury could result in damage to cervical vertebrae, muscles, vessels and nerves, and even cause vertebral ...
Zhu Ying - - 2005
A 68-year-old man had an unremitting left sixth cranial nerve palsy immediately after completing a long bicycle trip. High-resolution (3 Tesla) magnetic resonance imaging disclosed a dolichoectatic vertebral artery that compressed the left sixth cranial nerve against the belly of the pons at its root exit zone. It was postulated ...
Toyoda Kazunori - - 2005
Because vertebrobasilar arterial disorders seem to be common in patients with end-stage renal disease, a neuroradiological evaluation of vertebrobasilar circulation is necessary for patients with possible vertebrobasilar insufficiency. In three patients on maintenance hemodialysis, contrast-enhanced transcranial color-coded real-time sonography (TCCS) through a suboccipital window delineated occlusion of bilateral vertebral arteries ...
Gille Olivier - - 2005
STUDY DESIGN: Case report of a triple total cervical vertebrectomy. OBJECTIVE: To describe a new management for cervical tumor. Preoperative planning using arteriography, successive occlusion of both vertebral arteries, and the cervical vertebrectomy are reported. SUMMARY OF BACKGROUND DATA: Thoracic or lumbar complete vertebrectomy for primary malignant tumor or metastasis ...
Spengos K - - 2005
Occlusion of the rostral portion of the basilar artery can result in ischaemia of the midbrain and thalami, as well as of the temporal and occipital lobes. The so called "top of the basilar" syndrome manifests clinically as numerous combinations of abnormalities of alertness, sleep-wake cycle, and behaviour and oculomotor ...
Kim S H - - 2005
PURPOSE: To evaluate the prevalence of proximal vertebral artery stenosis, compared wiith those of the distal vertebral/basilar artery and extracranial internal carotid artery, in a large population of stroke and non-stroke patients. MATERIAL AND METHODS: Nine-hundred-and-thirty-five patients who underwent high-resolution contrast-enhanced magnetic resonance angiography in a regional general hospital were ...
Wu Christopher - - 2005
PURPOSE: To retrospectively determine whether differential temporal changes in signal intensity of the vertebral arteries, measured at a bolus-timing examination with a test dose of a gadolinium-based contrast agent, are present in patients with subclavian steal syndrome. MATERIALS AND METHODS: Institutional review board exemption was obtained, and informed consent was ...
Kakino Shunsuke - - 2005
BACKGROUND: Symptomatic, medically refractory vertebrobasilar stenosis carries a poor prognosis and is an indication for vascular reconstruction. CASE PRESENTATION: A 67-year-old man suffered medically refractory recurrent vertigo due to artery-to-artery embolism caused by long, eccentric, and severe stenosis at the extradural-intradural junction of the right vertebral artery. Transluminal angioplasty was ...
Shimizu Satoru - - 2005
BACKGROUND AND PURPOSE: The segmental arteries, which include the posterior intercostal, subcostal, and lumbar arteries, are gateways for performance of selective spinal arteriography of the thoracolumbar level. We performed a cadaveric study to clarify the anatomic relationship between the origins of the segmental arteries in the aorta and the vertebral ...
Sabadash V V - - 2005
Contractile responses of the basilar artery to serotonin were examined in vitro on two models of circulation disturbances in the vertebrobasilar region of the brain. Two days after 30-min reversible occlusion of vertebral arteries, the sensitivity of the basilar artery to serotonin decreased, while chronic vertebrobasilar insufficiency had no effect ...
Paraskevas George - - 2005
The bony bridges of the atlas over the "groove of the vertebral artery" are commonly seen in plain radiographs of the cervical spine, and it is a subject of controversy whether they cause compression of the underneath lying vertebral artery. To clarify this we examined a total of 176 dried ...
Garcia Alzamora Meritxell - - 2005
The incidence of injury to the cervical vertebral artery during surgery for stenosis of the cervical neuroforamina is very low. We present a case in which bleeding during microforaminotomy at the level C6/7 occurred. The bleeding could be controlled intraoperatively. Two days later, a life-threatening cervical hematoma required urgent bedside ...
Iwabuchi S S Department of Neurosurgery, Toho University Ohashi Hospital, Ohashi, Meguro-ku, Tokyo; Japan - - - 2005
Proximal occlusion of the vertebral artery is regarded as a safe and effective method of treating aneurysms of the vertebral artery or the vertebrobasilar junction unsuitable for treatment by neck clipping. Complications known to develop after this procedure include ischemic lesions of the perforators and other areas. There are only ...
O'Shaughnessy Brian A - - 2005
BACKGROUND: The authors present a patient who experienced late (5-year follow-up) morphological progression of a dissecting aneurysm of the distal basilar artery after treatment with a combined microsurgical and neuroendovascular Hunterian strategy. In addition to postulating about the possible reasons underlying the evolution of this lesion, the role of stenting ...
Shiraishi Naoki - - 2005
This study investigated in 165 cadavers for the presence and morphology of a great posterior radicular artery (GPRA). The spinal cords were examined for the presence of a GPRA macroscopically and by stereomicroscopy, and the spinal segmental level where the GPRA was located and left-right differences were investigated. A GPRA ...
Orihashi Kazumasa - - 2005
Although identification of the key artery that perfuses the spinal cord is essential to avoid occurrence of paraplegia after surgery on the thoracoabdominal aorta, reliable and noncomplicated measures are not yet available. A new method of determining it by using echocardiography with a saline injection into the lumbar artery was ...
Gürer Onur - - 2005
A pulsatile mass and severe neck pain developed suddenly in a 15-year-old female patient suffering from Behçet's disease. Magnetic resonance imaging showed a pseudoaneurysm at the C3-C4 level that was 51 x 49 x 45 mm in size, originating from the left vertebral artery, with a thin neck and thrombus ...
Tay Keng Yeow - - 2005
Although conventional intraarterial digital subtraction angiography remains the gold standard method for imaging the vertebral artery, noninvasive modalities such as ultrasound, multislice computed tomographic angiography and magnetic resonance angiography are constantly improving and are playing an increasingly important role in diagnosing vertebral artery pathology in clinical practice. This paper reviews ...
Macchi V - - 2005
The posterior inferior cerebellar artery (PICA) shows the most variable course among the cerebellar arteries, mainly at the level of the lateral medullary segment. Based on the correlation between the level of origin and the characteristics of the lateromedullary segment, we have proposed three patterns of course of the PICA. ...
Kumral Emre - - 2005
BACKGROUND AND PURPOSE: The clinical, etiological and stroke mechanisms are defined well before but the detailed clinical and etiologic mechanisms regarding to all clinical spectrum of posterior inferior cerebellar artery (PICA) infarcts were not systematically studied by diffusion-weighted imaging (DWI). METHODS: Seventy-four patients with PICA territory ischemic lesion proved by ...
Coward L J - - 2005
Surgery for vertebral artery stenosis is technically difficult, potentially hazardous and is not considered in most centres. There is growing evidence from case series that vertebral artery stenosis may be treated endovascularly by percutaneous transluminal angioplasty and stenting. This may be a feasible alternative to surgery to relieve symptoms caused ...
Haneline Michael - - 2005
OBJECTIVE: To examine the similarities and dissimilarities between cervical chiropractic manipulative therapy and whiplash, and their respective relation to cervical artery dissection. DATA SOURCES: A literature synthesis used MEDLINE-PubMed and MANTIS literature searches. A total list of 99 relevant articles was generated. Additional references were collected from citations incorporated within ...
Arnold Marcel - - 2005
The most frequent clinical manifestation of vertebral artery dissection is posterior headache or neck pain accompanied or followed by posterior circulation transient ischemic attack or stroke. Rarer clinical features include isolated headache or neck pain, cervical spinal cord ischemia and cervical root impairment. Asymptomatic vertebral artery dissections have been reported. ...
Holodny Andrei I - - 2005
The author presents a case of occlusion of the right internal carotid artery in which the vertebral artery, the basilar artery and the entire right-sided anterior and posterior circulations were supplied by the right external carotid artery by way of an occipital-vertebral artery anastomosis. In this case, the usually small ...
Benninger D H - - 2005
The purpose of this chapter is to present ultrasound and, in particular, color duplex sonography (CDS) assessment of spontaneous dissection of the cervical internal carotid (sICAD) and vertebral (sVAD) arteries. The examination, typical ultrasound findings and pitfalls in the acute sICAD and sVAD, detection of microembolic signals, and recanalization will ...
Tomasello Francesco - - 2005
OBJECTIVE: Brainstem compression caused by vascular abnormalities has rarely been reported in the literature. We describe five cases of large ectatic vertebral artery causing compression and distortion of the medulla oblongata with pyramidal tract signs and low cranial nerve dysfunction. Microvascular decompression by retracting the vertebral artery and anchoring it ...
Shimizu S S Department of Neurological Surgery, University of Florida, Gainesville; Florida - - - 2004
The so called anterior meningeal artery (AMA) is a branch of the vertebral artery (VA), which had been interpreted as a supplying vessel of the dura in the foramen magnum and upper cervical level. In this study, we examined the anatomy of this artery and relationships to its surrounding structures ...
Brouwer P A PA Radiology Department, Leiden University Medical Center, Leiden; The Netherlands - - - 2004
In this case presentation we describe a patient with an anomalous origin of the right vertebral artery arising from the right common carotid artery in combination with an aberrant right subclavian artery and a left vertebral artery originating from the arch between the left common carotid artery and left subclavian ...
Chen Yuan-Liang - - 2004
We have recently encountered a rare case of fibromuscular dysplasia (FMD) of the vertebral artery (VA) presenting as lateral medullary syndrome. A 39-year-old male was admitted to our hospital due to vertigo, dysarthria and numbness of the left face and the right limbs. A magnetic resonance imaging (MRI) and magnetic ...
Yamazaki Masashi - - 2004
STUDY DESIGN: Case report of a Down syndrome patient with right vertebral artery fenestration and abnormalities of the craniovertebral junction. OBJECTIVES: Describe the utility of 3-dimensional computed tomography angiography for evaluating vertebral artery anomalies before surgery. SUMMARY OF BACKGROUND DATA: Previous reviews evaluating catheter angiograms identified various anomalies of vertebral ...
Kawchuk Gregory N - - 2004
BACKGROUND: Cervical spine manipulation is most often performed to affect relief of musculoskeletal complaints of the head and neck. Performed typically without complication, this modality is thought to be a potential cause of cerebrovascular injury, although a cause-effect relation has yet to be established. To explore this relation, an experimental ...
Shin Y S - - 2004
Two patients with vertebral artery dissecting aneurysm are presented in which the posterior inferior cerebellar artery (PICA) arose from the wall of the aneurysm. The patients presented with progressive myelopathy due to mass effect on the medulla. One patient was treated with proximal occlusion of the vertebral artery using Guglielmi ...
Kizilkilic Osman - - 2004
OBJECTIVE: Color Doppler ultrasonography is the most widespread diagnostic procedure in obstructive disease of the arteries supplying the brain. To our knowledge, there are only a few correlative color Doppler ultrasonographic and angiographic studies of the vertebral arteries, especially in patients who have flow-restrictive stenosis at the carotid bifurcation. The ...
Sade Burak - - 2004
The basilar artery as the origin of the ophthalmic artery is extremely rare. A 48-year-old patient had undergone angiography for suspicion of a right middle cerebral artery aneurysm. No aneurysm was detected. Vertebral artery injections demonstrated the left ophthalmic artery originating from the basilar trunk. Current embryologic theories fall short ...
O'Shaughnessy Brian A - - 2004
OBJECTIVE AND IMPORTANCE: Dolichoectatic vertebrobasilar artery aneurysms are often extremely difficult, if not impossible, to treat with microneurosurgical clip reconstruction. As such, a Hunterian strategy via vertebral or basilar artery sacrifice is often used. We have encountered a patient in whom deliberate bilateral vertebral artery sacrifice was insufficient to avoid ...
< 8 9 10 11 12 13 14 15 16 17 18 >