AnatomyOrganismsDiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPhenomena and ProcessesTechnology, Industry, AgricultureInformation ScienceHealth Care
Radial ArteryCavernous Sinus ThrombosisCarotid ArteriesGnetumCarotid Artery DiseasesCarotid Artery, CommonCarotid Artery, ExternalEndarterectomy, CarotidDissectionSphenoid SinusCarotid Artery ThrombosisArteriesCarotid Artery, Internal, DissectionCranial SinusesCarotid SinusCerebral AngiographyCarotid-Cavernous Sinus FistulaAbducens Nerve DiseasesAortic Valve StenosisCentral Nervous System Vascular MalformationsCranial NervesOphthalmoplegiaSphenoid BoneTomography, X-Ray ComputedCranial Fossa, MiddleCoronary StenosisSinus Thrombosis, IntracranialDura MaterAneurysm, DissectingCerebral VeinsMagnetic Resonance AngiographyStentsEmbolization, TherapeuticCarotid BodyArteriovenous FistulaAngiography, Digital SubtractionCerebral ArteriesSella TurcicaMaxillary SinusOculomotor Nerve DiseasesTreatment OutcomeTunica IntimaConstriction, PathologicSpinal StenosisMagnetic Resonance ImagingSinus of ValsalvaParanasal SinusesUltrasonography, Doppler, DuplexTracheal StenosisVertebral ArteryChemical PrecipitationArterial Occlusive DiseasesAngiographyPulmonary ArteryNeurosurgical ProceduresFemoral ArteryTunica MediaParanasal Sinus NeoplasmsCranial Nerve DiseasesFollow-Up StudiesRenal ArteryIntracranial AneurysmMeningeal ArteriesHorner SyndromeNeck DissectionRetrospective StudiesPituitary NeoplasmsAortic AneurysmAngioplastySkull Base NeoplasmsIschemic Attack, TransientCarotid Artery InjuriesBlood Flow VelocityBasilar ArteryFrontal SinusMitral Valve StenosisCarotid Intima-Media ThicknessPyloric StenosisCatheterizationTime FactorsPulmonary Valve StenosisExophthalmosEndarterectomyOphthalmic ArteryParanasal Sinus DiseasesSubclavian ArterySkull BaseArteriosclerosisPetrous BonePostoperative ComplicationsMaxillary Sinus NeoplasmsOrbitRisk FactorsIliac ArteryProspective StudiesVertebral Artery DissectionStrokeCoronary SinusRenal Artery ObstructionTrochlear Nerve
Middle cerebrDural venousAneurysmOcclusionVenous systemComputed tomographicAneurysmsLesionsSymptomaticProximalEmbolizationArterialIdentify carotidExtracranial carotidThrombosisStrokeFistulaVertebralIpsilateralEndarterectomyCoronaryOcclusive diseaseClinicalArteriovenousSigmoid sinusBifurcationTransverse sinusCerebralEndovascularVeinStent placementAnatomyFistulasUltrasoundSuperior sagitAtheroscleroticPosteriorMorphologyStrokesStenotic lesionPlaqueDuplexAnteriorEtiologyPatientsAriseInferiorDemonstrates
Middle cerebr3
Dural venous3
  • Because these venous channels are valveless, compression of the thorax, abdomen, or pelvis, as occurs during heavy coughing and straining, may force venous blood from these regions into the internal vertebral venous system and from it into the dural venous sinuses. (gov.gy)
  • Venous shunting occurs into the dural venous sinuses or directly into cortical or spinal veins. (bmj.com)
  • The pathogenesis of sDAVFs is yet to be fully elucidated, conversely to their intracranial counterparts, in which dural venous thrombosis and neoangiogenesis contribute to the abnormal recanalization of the primitive direct connections between the arteries and veins around the major dural venous sinuses. (neurosurgicalatlas.com)
Aneurysm4
Occlusion1
  • The key imaging is the CT angiography that shows the web, the cerebral artery occlusion, and the outcome appreciation. (bvsalud.org)
Venous system1
  • Results The Neuron 6 F 0.053 inch inner luminal diameter delivery catheter (Penumbra) was placed in a very distal location within the internal carotid artery, external carotid artery and venous system enabling successful endovascular treatment of the intracranial pathology with no related neurological complications. (bmj.com)
Computed tomographic1
Aneurysms3
  • There were 10 internal carotid and 3 basilar artery aneurysms. (ajnr.org)
  • The immediate and long-term outcomes, complications, recurrences and the need for retreatment were analyzed in a series of 280 consecutive patients with anterior communicating artery aneurysms treated with the endovascular technique. (neurosurgery.directory)
  • From October 1992 to October 2001 280 patients with 282 anterior communicating artery aneurysms were addressed to our center. (neurosurgery.directory)
Lesions4
  • Although duplex imaging helps in the detection of carotid lesions in asymptomatic patients, the cost and risk associated with potentially unnecessary follow-up testing and the risk of unnecessary surgical procedures are arguments againt the wider application of carotid sonography in asymptomatic indivduals. (medscape.com)
  • 1 Arterial supply to these lesions is usually via dural and falcine arteries arising from the anterior or posterior circulation, with less common contribution from parenchymal arteries. (bmj.com)
  • The duplex scan has 86% sensitivity, but is limited in its ability to identify carotid artery lesions near the base of the skull. (biomedcentral.com)
  • Approximately 15% of these lesions derive their vascular supply from the internal iliac arteries, and 5-15% from the intercostal arteries. (neurosurgicalatlas.com)
Symptomatic2
  • [ 7 , 9 ] Duplex carotid ultrasound remains useful in the initial evaluation of symptomatic patients who present with nonspecific symptoms that may be related to stenotic or embolic carotid stenosis. (medscape.com)
  • 70%) symptomatic carotid stenosis have up to a 20% risk of an ipsilateral stroke over the following 3-month time period, with 30% to 35% risk of ipsilateral stroke over 2 to 3 years' time when treated with optimum medical management. (radiologykey.com)
Proximal1
  • and proximal arterial stenosis with hypotension that decreases cerebral blood flow in arterial watershed zones (hemodynamic stroke). (msdmanuals.com)
Embolization2
  • One patient developed a major stroke from venous sinus thrombosis after embolization. (bmj.com)
  • For uterine fibroid embolization , internal radiation therapy for the liver (radioembolization) , radiofrequency ablation or other types of ablation (cryoablation, alcohol or microwave ablation), or irreversible electroporation scheduling, information or for preparation instructions, please call 310-423-8694 . (cedars-sinai.org)
Arterial4
  • The process of carotid arterial narrowing represents a long-term chronic disease. (medscape.com)
  • The clincial management of coronary artery disease , peripheral arterial stenosis, and hypertension are likely to delay the development of carotid artery stenosis. (medscape.com)
  • Arterial blood rushes into the cavernous sinus, enlarging it and forcing retrograde blood flow into its venous tributaries, especially the ophthalmic veins. (gov.gy)
  • Seven patients presented with Degree I arterial injuries, 10 patients presented with Degree II artery injuries, four patients presented with Degree IV artery injuries, one patient presented with a Degree V artery injury, and one patient had a carotid fistula. (biomedcentral.com)
Identify carotid1
Extracranial carotid2
  • [ 1 ] About 15% of acute ischemic strokes are associated with extracranial carotid stenosis resulting from atherosclerosis. (medscape.com)
  • An estimated 88% of these are ischemic strokes, with 15% attributed to extracranial carotid occlusive disease. (radiologykey.com)
Thrombosis1
  • Septic thrombosis of the cavernous sinus often results in the development of acute meningitis. (gov.gy)
Stroke5
  • The factors that determine the risk of a carotid plaque resulting in a stroke include luminal stenosis, plaque composition, and plaque morphology. (medscape.com)
  • BACKGROUND: Carotid web (CaW) and carotid free-floating thrombus (CFFT) are rare yet critical causes of ischemic stroke in young adults. (bvsalud.org)
  • Depending on the cause of stroke, carotid endarterectomy or stenting, antiplatelet medications, or anticoagulants may help reduce risk of subsequent strokes. (msdmanuals.com)
  • Carotid occlusive disease is one of several etiologic factors for stroke. (radiologykey.com)
  • Carotid artery stenosis in patients is usually discovered after an ischemic event (either a transient ischemic attack [TIA] or a permanent stroke). (radiologykey.com)
Fistula1
  • The blood does not collect within a preexisting space, but rather creates a space at the Fractures of Cranial Base In fractures of the cranial base, the internal carotid artery may be torn, producing an arteriovenous fistula within the cavernous sinus. (gov.gy)
Vertebral5
Ipsilateral3
  • The ipsilateral association of stenosis and hearing loss strengthens the link between narrowing of the IAC and deafness. (nyu.edu)
  • There is more than one probable cause (eg, atrial fibrillation and ipsilateral carotid stenosis). (msdmanuals.com)
  • Patients that are ideal for CAS include patients that have a high surgical risk, such as patients with prior neck irradiation, aberrant neck anatomy, contralateral recurrent laryngeal nerve injury, prior ipsilateral CEA, significant coronary artery disease, high cervical stenotic lesion location, and tracheostomy. (radiologykey.com)
Endarterectomy2
  • Therapeutic strategy associates antithrombotic treatment and operative management with stenting of the carotid web or endarterectomy. (bvsalud.org)
  • Endovascular therapy for the treatment of carotid atherosclerotic disease has advanced over the last decade and is now considered to be a viable alternative to carotid endarterectomy (CEA) in appropriately selected patients. (radiologykey.com)
Coronary2
  • There is good evidence in support of an evaluation for carotid stenosis prior to coronary artery bypass surgery. (medscape.com)
  • We encountered the unusual case of a coronary artery stent that stripped from its delivery balloon and embolised into the left internal carotid artery during percutaneous coronary intervention. (bvsalud.org)
Occlusive disease1
  • It is ranked as the third most common cause of death in the United States, after heart disease and cancer, and about one third of all strokes are related to carotid occlusive disease. (medscape.com)
Clinical3
  • The goals of carotid imaging are early detection, clinical staging, surgical road mapping, and postoperative therapeutic surveillance (see the images below). (medscape.com)
  • The patient was treated with excellent clinical outcomes with carotid artery stenting and dual antiplatelet therapy. (bvsalud.org)
  • Today, the rate of complications from CEA versus CAS are nearly equivocal, making the choice of therapy based more on clinical presentation, medical comorbidities, and carotid artery anatomy. (radiologykey.com)
Arteriovenous2
  • An arteriovenous malformation (AVM) is a tangled cluster of vessels, typically located in the supratentorial portion of the brain, in which arteries connect directly to veins without an intervening capillary bed. (medscape.com)
  • Spinal dural arteriovenous fistulas are a heterogeneous group of predominantly acquired pathologic vascular malformations that are defined by an abnormal connection between an artery and a vein. (neurosurgicalatlas.com)
Sigmoid sinus1
  • A posterior condylar emissary vein may also be present, passing through the condylar canal, connecting the sigmoid sinus with the suboccipital venous plexus. (gov.gy)
Bifurcation1
  • Less than 20% of these are caused by atheroma in the carotid bifurcation. (radiologykey.com)
Transverse sinus1
Cerebral1
Endovascular1
  • In this review, the authors concentrate their discussion on the treatment of carotid atherosclerotic disease with particular attention on the endovascular treatment. (radiologykey.com)
Vein2
  • AVM represents complex communication of an artery and a vein in which oxygenated blood is forced away from the intended tissue. (medscape.com)
  • The innermost layer of an artery or vein, made up of one layer of endothelial cells and supported by an internal elastic lamina. (lookformedical.com)
Stent placement2
  • however, carotid artery balloon angioplasty and stent placement has enjoyed significant technological advances over the last decade and can now offer a comparable treatment alternative to CEA. (radiologykey.com)
  • Carotid artery balloon angioplasty and stent placement (CAS) during its infancy was associated with higher rates of perioperative ischemic complications when compared with CEA. (radiologykey.com)
Anatomy1
  • Patients with type II and III aortic arches, tortuous common carotid artery (CCA), or young patients with otherwise normal anatomy and a low-lying cervical lesion location precluding mandibular disarticulation are best served with CEA. (radiologykey.com)
Fistulas1
  • The first cases of DAVF as a separate entity from cavernous carotid fistulas were reported in the literature as early as 1936. (bmj.com)
Ultrasound1
  • The degree of carotid stenosis by ultrasound should be reported based on the Society of Radiologists in Ultrasound's consensus conference in 2003. (radiologykey.com)
Superior sagit1
  • Sensory endings are more numerous in the dura along each side of the superior sagittal sinus and in the tentorium cerebelli than they are in the floor of the cranium. (gov.gy)
Atherosclerotic1
Posterior3
  • Quantitative study of the opticocarotid and carotid-oculomotor windows for the interpeduncular fossa, before and after internal carotid artery mobilization and posterior communicating division. (neurosurgery.directory)
  • The posterior wall of the frontal sinus, which separates the sinus from the anterior cranial fossa, is much thinner than its anterior wall. (medscape.com)
  • The sphenoid sinus is supplied by the sphenopalatine artery, except for the planum sphenoidale, which is supplied by the posterior ethmoidal artery. (medscape.com)
Morphology1
Strokes1
  • Although considered as a rare entity, carotid web is associated with the risk of recurrent strokes in the MCA territory and especially in the absence of the typically recognized risk factors. (bvsalud.org)
Stenotic lesion1
  • Severe focal stenosis (arrow) on background of a larger stenotic lesion. (neuroangio.org)
Plaque1
  • Bost US and MRI offer insight into the nature of carotid plaques based on the amount of lipid material in the plaque and the presence of ulcerations. (medscape.com)
Duplex3
  • The use of carotid duplex ultrasonography has been widely recommended as a screening examination. (medscape.com)
  • However, the U.S. Preventive Services Task Force U.S. Preventive Services Task Force has recommended against the usefulness of carotid duplex ultrasonography as a screening test in asymptomatic individuals. (medscape.com)
  • The detection of a carotid bruit is a common physical examination finding that may lead to a referral for carotid duplex ultrasonography. (medscape.com)
Anterior4
  • Sinuses, anterior and sectioned views. (medscape.com)
  • The anterior maxillary sinus wall houses the infraorbital nerve, which runs through the infraorbital canal along the roof of the sinus and sends branches to the soft tissues of the cheek. (medscape.com)
  • The thinnest portion of the anterior wall is above the canine tooth, called the canine fossa, which is an ideal entry site for addressing various disease processes of the maxillary sinus. (medscape.com)
  • The most common location was the anterior communicating artery . (neurosurgery.directory)
Etiology1
  • These cases form the basis for reading about etiology, pathology, complications and treatment of problems in internal medicine. (xusom.com)
Patients4
  • The usefulness of carotid artery screening has been demonstrated in patients prior to elective surgery. (medscape.com)
  • Most of the literature on IAC stenosis is concerned with its effect on the outcome of cochlear implantation (i.e. patients with profound bilateral hearing loss). (nyu.edu)
  • The purpose of this study was to clarify the criteria for initial treatment of chronic subdural hematoma (CSDH) by com-paring the backgrounds and post-treatment courses of patients who underwent drainage or middle meningeal artery (MMA) emboliza-tion for CSDH. (go.jp)
  • The sphenoid sinus is variably pneumatized and may extend as far as the foramen magnum in some patients. (medscape.com)
Arise1
  • The ethmoid sinuses arise in the ethmoid bone, forming several distinct air cells between the eyes. (medscape.com)
Inferior1
Demonstrates1
  • The accessory meningeal artery (AMA) demonstrates various potential anastomoses with the external (ECA) and internal (ICA) carotid arteries. (nagoya-u.ac.jp)