Search Results
Results 351 - 400 of 1914
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Depedrini J S - - 2007
The present study has analysed 30 pampas fox brains (Pseudalopex gymnocercus), injected with latex, aiming to systematize and describe the distribution and vascularization territories of the middle cerebral artery. After being originated from the rostral branch of the internal carotid artery this vessel formed the following collateral branches: rostral choroidal ...
Schubert Armin - - 2007
The causes of postoperative cardiovascular disturbances in neurosurgical patients include direct cardiac neurogenic effects, clinical situations where brain tissue is underperfused, and hyperdynamic states. EKG and echographic abnormalities are common in subarachnoid hemorrhage where cardiac troponin I is the most useful predictor of cardiac risk after SAH. Neurogenic pulmonary edema ...
Geltser B I - - 2007
Vasomotor activity of the major and cerebral arteries was studied in mice with chronic obstructive pulmonary disease. Regional differences were revealed in the endothelium-dependent response of arteries. The development of chronic obstructive pulmonary disease was associated with a paradoxical response of the dilatational component of vasoregulation against the background of ...
Sharma Vijay K - - 2007
Transcranial Doppler is often employed for the assessment of cerebral hemodynamics. The study by Chao et al in the February 2007 issue of the journal raises some important issues regarding the understanding of the mechanisms involved in cough syncope. We suggest including some additional monitoring parameters, for example, end-tidal or ...
Lee Seung Hwan - - 2007
Unruptured non-traumatic dissecting aneurysm in the M4 segment of the middle cerebral artery (MCA) accompanied by complete occlusion of the ipsilateral internal cerebral artery (ICA) has never been reported. A 41-year-old man presented with an infarction manifesting as left-sided weakness and dysarthria. Magnetic resonance angiography revealed a subacute stage infarction ...
Eskesen Karen - - 2007
Calcitonin-like receptor (CL-R) is a functional CGRP1-receptor when complexed with RAMP1 or an adrenomedullin-receptor or when complexed with RAMP2 or RAMP3. This study was carried out 1. to set up a method to examine the relative quantity of mRNA of CL-R, RAMP1, RAMP2 and RAMP3 in human coronary (CA), pulmonary ...
Freret Thomas - - 2008
The common marmoset (Callithrix jacchus), a New World monkey, has recently been used as a model of focal cerebral ischaemia. Here, we sought to develop a stroke model in this species using an intraluminal approach to occlude the middle cerebral artery (MCA). This technically simple procedure allows both transient and ...
Purandare N - - 2008
The study aimed to examine the relationship between spontaneous cerebral emboli (SCE), patent foramen ovale (PFO) and white matter hyperintensities (WMH) on cerebral MRI in patients with Alzheimer's disease (AD) and vascular dementia (VaD). SCE were identified by transcranial Doppler of the middle cerebral artery for 1 h. A "significant" ...
Krayenbühl Niklaus - - 2007
OBJECTIVE: Cutting the posterior communicating artery (PComA) can improve the neurosurgeon's view and maneuverability while performing surgery within the interpeduncular fossa. Although mentioned in some reports, its technique and safety have not been studied in detail thus far. METHODS: Patients undergoing surgery for vascular and neoplastic lesions in the interpeduncular ...
Paiva Fernando F - - 2007
The ability to assess the perfusion territories of major cerebral arteries can be a valuable asset to the diagnosis of a number of cerebrovascular diseases. Recently, several arterial spin labeling (ASL) techniques have been proposed for determining the cerebral perfusion territories of individual arteries by three different approaches: (1) using ...
Lee Jung Hwan - - 2007
A 26-year-old man was admitted to our department due to intermittent left hemiparesis for 3 months. Magnetic resonance image showed subacute infarction in the right precentral gyrus. Digital subtraction angiography and magnetic resonance angiography revealed an aneurysmal protrusion at the right middle cerebral artery (MCA) bifurcation. It was difficult to ...
Singer Oliver C - - 2007
Pathological yawning can be a clinical sign in disorders affecting the brainstem. Here we describe seven patients with pathological yawning caused by acute middle cerebral artery stroke, indicating that pathological yawning also occurs in supratentorial stroke. We hypothesise that excessive yawning is a consequence of lesions in cortical or subcortical ...
Lee Kee-Oog - - 2007
PURPOSE: The arterial pulsatility index (PI) is measured by transcranial Doppler ultrasonography (TCD) and is postulated to reflect the vascular resistance distal to the artery being examined. An increased PI of the intracranial artery is often reported with diabetes mellitus (DM), old age, hypertension, intracranial hypertension, vascular dementia, and small ...
Bejot Yannick - - 2008
Ischemia of the areas supplied by the anterior cerebral artery is relatively uncommon. In addition, combined hemiballismus and masturbation have rarely been reported in patients with cerebrovascular disease. We describe herein a 62-year-old right-handed man simultaneously exhibiting right side hemiballismus and involuntary masturbation with the left hand after bilateral infarction ...
Maingay-de Groof Femke - - 2008
INTRODUCTION: Incontinentia pigmenti (IP) is a rare X-linked dominant neuroectodermal multisystem disorder characterized by skin lesions following Blaschko lines. In almost all patients the skin is involved and in 30-50% the central nervous system (CNS) is. Vascular occlusive phenomena probably play a role in CNS involvement. Whether these vascular changes ...
Totaro Pasquale - - 2008
Cerebral and/or visceral malperfusion during CPB is a potentially dramatic situation which can be easily misunderstood if a complete monitoring of arterial pressure and cerebral saturation is not available. Here we present a case in which we could promptly diagnose cerebral and visceral malperfusion just after starting cardiopulmonary bypass. Use ...
Proweller Aaron - - 2007
Stroke is the third leading cause of death and a significant contributor of morbidity in the United States. In humans, suboptimal cerebral collateral circulation within the circle of Willis (CW) predisposes to ischemia and stroke risk in the setting of occlusive carotid artery disease. Unique genes or developmental pathways responsible ...
Misra Vivek - - 2007
BACKGROUND: Cerebral sino-venous thrombosis (CVT) is commonly treated with anticoagulant therapy. There are reports of response to endovascular thrombolysis with or without mechanical aspiration in patients with clinical deterioration. CASE: We present a 29-year-old man with acute onset of severe headache, found to have extensive CVT by magnetic resonance venography ...
Huh Jun Suk - - 2007
The azygos anterior cerebral artery, a rare anomaly in the circle of Willis in which only a single vessel supplies the medial aspects of both anterior cerebral hemispheres, is closely associated with saccular aneurysms. We present three cases of azygos anterior cerebral artery aneurysms among the 781 cerebral aneurysms surgically ...
Shoja Mohammadali M - - 2008
Cerebral control of respiration has been extensively studied but at present, no evidence of cerebral laterality or dominance for respiration exists. We examined the ventilatory changes following temporary (20 min) occlusion of the right or left common carotid artery in rabbits. The corresponding groups of sham-operated rabbits were used as ...
Waaijer Annet - - 2007
PURPOSE: To prospectively evaluate changes in brain perfusion computed tomographic (CT) parameters after revascularization of unilateral symptomatic carotid artery stenosis and to determine whether pretreatment perfusion CT parameters can be used to predict changes in cerebral hemodynamics after treatment. MATERIALS AND METHODS: This study was medical ethics committee approved, and ...
Laar, Peter Jan van
The ability to visualize the perfusion territories of the brain feeding arteries is important for many clinical applications. Recently, selective arterial spin labeling (ASL) MRI has been introduced as the first method capable to visualize the perfusion territories of the brain in-vivo. In this thesis we describe the possibilities of ...
Vasović Ljiljana P - - 2007
Numerous studies have reported that all components of the cerebral arterial circle in the 4-month-old human fetus are more slender than adult vessels, and of equal caliber. After that period, a degree of caliber differentiation is present, especially at the level of the posterior communicating arteries. The aim of this ...
Okeda Riki - - 2007
An autopsy case of diffuse axonopathic leukoencephalopathy induced by drug treatment is reported. A 70-year-old woman with multiple myeloma developed encephalopathy several days after completing a course of intravenous human immunoglobulin (IVIg) and granulocyte-colony stimulating factor (G-CSF), and died within I month. T2-weighted MRI demonstrated multifocal high-signal areas in the ...
Tajima Yutaka - - 2007
A 37-year-old man with a meningioma compressing the right frontal lobe underwent preoperative embolization of the feeding vessels from the right meningeal artery. Although the first challenge was apparently successful, an excess amount of embolization agent was accidentally injected during the next procedure. X-ray monitoring demonstrated flow of contrast medium ...
Chang W-N - - 2007
To evaluate the cerebral hemodynamics in cryptococcal meningitis (CM) patients using non-invasive studies. Serial trans-cranial color-coded sonography (TCCS) and magnetic resonance angiography (MRA) studies were performed to measure the cerebral vasculopathy of 12 HIV-negative CM patients. With TCCS, 8 of the 22 middle cerebral arteries (MCAs) showed stenotic velocities, whereas ...
Sasaki Tatsuya - - 2007
OBJECT: The object of this study was to investigate patients with cerebral infarction in the area of the perforating arteries after aneurysm surgery. METHODS: The authors studied the incidence of cerebral infarction in 1043 patients using computed tomography or magnetic resonance imaging and the affected perforating arteries, clinical symptoms, prognosis, ...
Peltier J - - 2007
Although variations of the anterior part of the cerebral arterial circle of Willis are quite well known, though some anomalies are exceedingly rare. In a 61-year-old female individual, on both sides the precommunicating parts of the anterior cerebral artery were found to course inferiorly to the ipsilateral optic nerves. This ...
Hirouchi Yasuhiko - - 2007
A monkey model (Cynomolgus) was established to evaluate the delayed neurological damage evident at areas distant from ischemic cerebral foci. In addition to proton magnetic resonance spectroscopy (MRS) monitoring in life, histological examinations of specimens of the brain was conducted on lesions produced 6h and 1, 2, 4 and 8 ...
Aoki Tomohiro - - 2007
BACKGROUND AND PURPOSE: The degradation of extracellular matrix (ECM) is a hallmark of a cerebral aneurysm; however, little is known regarding the molecular mechanism leading to this change. Tissue inhibitor of matrix metalloproteinase (TIMP) regulates the ECM degradation in vascular walls by inhibiting the activity of matrix metalloproteinases (MMPs). We ...
Sarikcioglu Levent - - 2007
Otfrid Foerster was a German neurologist and neurosurgeon who made innovative contributions to neurology and neurosurgery. Foerster performed the first electrocorticographic studies, the hyperventilation test on patient with epilepsy and described the atonic-astatic from of infantile cerebral palsy. He will be remembered best for the operation which bears his name ...
Gupta Praveen Kumar - - 2008
A 43-year-old lady, known case of sickle cell disease (SCD) was admitted in sickle cell crises and developed a left frontal intracerebral hematoma. She worsened further neurologically and was found to have developed a large left middle cerebral artery (MCA) infarct. Angiogram showed Moyamoya pattern. The patient was managed conservatively ...
Ortiz Gustavo A - - 2007
We report an 8-year-old white girl with no previous medical history who developed sudden onset right hemiplegia, left gaze preference, and global aphasia. An acute left middle cerebral artery stroke syndrome was diagnosed. She was treated with intravenous recombinant tissue plasminogen activator, 2 hours after the onset of symptoms. A ...
Yang Chun-Pai - - 2007
We report the clinical features and dopamine transporter [2-[[2-[[[3-(4-chlorophenyl)-8-methyl-8-azabicyclo[3.2.1]oct-2-yl]methyl](2-mercaptoethyl)amino]ethyl]amino]ethanethiolato(3-)-N2,N20,S2,S20]oxo-[1R-(exo-exo)]-[99mTc] technetium([99mTc]TRODAT-1) image finding in an 86-year-old woman with akinetic mutism due to infarction of bilateral anterior cerebral arterial territories. TRODAT-1 is a cocaine analogue that can be labeled with technetium-99m and bound to the dopamine transporter (DAT) site. It reflects primarily ...
Fujimura Miki - - 2007
OBJECT: Surgical revascularization for moyamoya disease prevents cerebral ischemic attacks by improving cerebral blood flow (CBF). It is undetermined, however, how rapid increase in CBF affects ischemic brain at acute stage, especially in children. CASE REPORT: A 4-year-old girl with moyamoya disease underwent right superficial temporal artery-middle cerebral artery (STA-MCA) ...
Myojin K - - 2007
BACKGROUND AND PURPOSE: Small cerebral vessels are a major site for vascular pathology leading to cerebral infarction and hemorrhage. However, such small cerebral vessels are difficult to visualize by using conventional methods. The goal of our study was the development of methodology allowing visualization of small cerebral arteries in rodents, ...
Aron Jesse H - - 2007
Raynaud's phenomenon is characterized by episodes of arterial vasospasm precipitated by cold stress, usually affecting the digits of the hands. There is controversy about the occurrence of vasospasm in internal organ systems. In this report, we present a case of Raynaud's peripheral vasospasm accompanied by cerebral oxygen desaturation as detected ...
Tubbs R Shane - - 2007
OBJECT: The basal vein of Rosenthal (BV) courses from the premesencephalic cistern, through the ambient cistern, and terminates in the quadrigeminal cistern. The aim of this study was to describe and quantitate the surgical anatomy of this structure and specifically to provide landmarks for identifying this vessel along its course. ...
Yamauchi Hiroshi - - 2007
OBJECTIVE: In atherothrombotic internal carotid artery or middle cerebral artery (MCA) occlusive disease, chronic hemodynamic compromise may increase the risk for cerebral ischemic damage. To determine whether selective neuronal damage demonstrated as a decrease in central benzodiazepine receptor (BZR) in the normal-appearing cerebral cortex is associated with increased oxygen extraction ...
Kochanowicz Jan - - 2007
BACKGROUND: Vascular reactions after cerebral angiography have not been hitherto extensively explored due to the lack of a simple, easily available, and safe method for the measurement of cerebral circulation. We attempted to study cerebral circulation with color Doppler transcranial sonography (TCCS) in consecutive patients before and immediately after digital ...
O'Charoen P - - 2007
In adult patients with acquired immunodeficiency syndrome (AIDS), cerebral arteritis usually takes the form of arterial wall thickening, stenosis, and occlusion, leading to cerebral ischemia and infarction. Aneurysms and intracranial hemorrhage are much less commonly associated with cerebral vasculitis. For reasons not entirely clear, this form is seen more often ...
Lee Seung-Hoon - - 2007
BACKGROUND: The cerebral distribution of microbleeds in cerebral amyloid angiopathy (CAA) is quite different from that in hypertension, i.e., microbleeds in central gray matters are frequently found in patients with advanced hypertension (aHT), but not in patients with CAA. Distributions within the cortico-subcortical (CSC) area have not been compared between ...
Horiuchi Tetsuyoshi - - 2007
Traumatic intracranial aneurysms are rare. A case of traumatic middle cerebral artery aneurysm was presented. A 66-year-old man sustained a severe head injury in a bicycle accident. Serial computed tomography and angiography showed the delayed intracerebral hemorrhage caused by the traumatic middle cerebral artery aneurysm. The aneurysm was trapped and ...
Sánchez-Arjona M B - - 2007
BACKGROUND AND PURPOSE: Carotid angioplasty stent placement (CAS) is an accepted alternative to endarterectomy. However, little is known about its effect on cerebral hemodynamics. We prospectively studied the early and delayed hemodynamic changes after CAS. MATERIALS AND METHODS: Sixty patients underwent CAS for >or=70% internal carotid artery stenosis. Transcranial Doppler ...
Pascual-Castroviejo I - - 2007
The authors describe a girl who was evaluated at 7 years old because of facial segmental hemangioma associated with unilateral persistent trigeminal artery, bilateral proatlantal arteries, hypoplasia of 1 posterior cerebral artery, kinking of 1 internal carotid artery at 2 different levels, and transdural collateral vascularization supplying the posterior areas ...
Lee Yen-Hsun - - 2007
A 3-year-old boy was brought to our hospital with 62% TBSA burn injury by boiled water. He received modern burn therapy, including early débridment and skin grafts. The patient discharged 70 days after being burned. Unfortunately, he sustained an acute right-sided hemiparesis 7 days after discharge. Magnetic resonance imaging revealed ...
Bednarek Nathalie - - 2007
Localized skin necrosis with deeper soft tissue injury at birth is unusual and has been rarely reported in association with cerebral infarction. Two cases with forearm necrotic skin associated with injured deeper soft tissue are described in which brachial artery thrombosis was documented. Considering the possibility of disseminated thrombosis, cerebral ...
Milosevic Zoran V - - 2007
PURPOSE: To present a technique for internal carotid artery stenting (CAS) with dual cerebral protection in patients with high-grade stenosis caused by large, soft atherosclerotic plaques. TECHNIQUE: The MO.MA proximal cerebral protection device is first placed in the external and common carotid arteries. Complete blockade of blood flow is achieved ...
Guerrieri Wolf Lorenzo - - 2007
OBJECTIVES: Intraoperative cerebral microembolism is a cause of cerebral dysfunction after cardiac surgery, and particulate microemboli are the most damaging. Using a new-generation transcranial Doppler ultrasound, we compared the number and nature of microemboli in patients undergoing off-pump coronary artery bypass grafting during performance of proximal anastomoses with three techniques: ...
Ando Koichi - - 2007
The innervation pattern of vasoactive intestinal polypeptide-immunoreactive (VIP-IR) nerves in the quail internal carotid artery (ICA) and cerebral arterial tree was investigated and compared with that of acetylcholinesterase-positive (AChE-P) nerves. The supply of VIP-IR nerves to the two arterial systems was distinctly richer than that of AChE-P nerves. It was ...
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