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Intracranial venous sinus stenosis

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https://www.readbyqxmd.com/read/27894675/the-manifestation-of-vortical-and-secondary-flow-in-the-cerebral-venous-outflow-tract-an-in-vivo-mr-velocimetry-study
#1
Sarah Kefayati, Matthew Amans, Farshid Faraji, Megan Ballweber, Evan Kao, Sinyeob Ahn, Karl Meisel, Van Halbach, David Saloner
Aberrations in flow in the cerebral venous outflow tract (CVOT) have been implicated as the cause of several pathologic conditions including idiopathic intracranial hypertension (IIH), multiple sclerosis (MS), and pulsatile tinnitus (PT). The advent of 4D flow magnetic resonance imaging (4D-flow MRI) has recently allowed researchers to evaluate blood flow patterns in the arterial structures with great success. We utilized similar imaging techniques and found several distinct flow characteristics in the CVOT of subjects with and without lumenal irregularities...
November 15, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27886896/venous-sinus-stenting-for-idiopathic-intracranial-hypertension-where-are-we-now
#2
REVIEW
Marc J Dinkin, Athos Patsalides
Idiopathic intracranial hypertension causes headache, papilledema and visual field loss, typically in obese women of childbearing age. Its anatomical underpinnings remain unclear, but a stenosis at the junction of the transverse and sigmoid sinuses has been recognized in the majority of patients through venography. The stenosis may result from intrinsic dural sinus anatomy or extrinsic compression by increased intracranial pressure, but in either case, its stenting has been shown to lead to an improvement in symptoms of intracranial hypertension and papilledema in multiple retrospective, non-controlled studies...
February 2017: Neurologic Clinics
https://www.readbyqxmd.com/read/27768690/resolution-of-pulsatile-tinnitus-after-venous-sinus-stenting-in-patients-with-idiopathic-intracranial-hypertension
#3
Srikanth Boddu, Marc Dinkin, Maria Suurna, Kelly Hannsgen, Xem Bui, Athos Patsalides
OBJECTIVE: Evaluate the role of venous sinus stenting in the treatment of pulsatile tinnitus among patients with Idiopathic Intracranial Hypertension (IIH) and significant venous sinus stenosis. SUBJECTS AND METHODS: A written informed consent approved by the Weill Cornell institutional review board was signed and obtained from the study participants. Thirty-seven consecutive patients with IIH and venous sinus stenosis who were treated with venous sinus stenting between Jan...
2016: PloS One
https://www.readbyqxmd.com/read/27765737/quantifying-the-cerebral-hemodynamics-of-dural-arteriovenous-fistula-in-transverse-sigmoid-sinus-complicated-by-sinus-stenosis-a-retrospective-cohort-study
#4
W-Y Guo, C-C J Lee, C-J Lin, H-C Yang, H-M Wu, C-C Wu, W-Y Chung, K-D Liu
BACKGROUND AND PURPOSE: Sinus stenosis occasionally occurs in dural arteriovenous fistulas. Sinus stenosis impedes venous outflow and aggravates intracranial hypertension by reversing cortical venous drainage. This study aimed to analyze the likelihood of sinus stenosis and its impact on cerebral hemodynamics of various types of dural arteriovenous fistulas. MATERIALS AND METHODS: Forty-three cases of dural arteriovenous fistula in the transverse-sigmoid sinus were reviewed and divided into 3 groups: Cognard type I, type IIa, and types with cortical venous drainage...
October 20, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27567578/cavernous-sinus-dural-arteriovenous-fistula-presenting-with-intracerebral-hemorrhage-associated-with-chronological-angiographic-demonstration-of-disturbed-leptomeningeal-venous-drainage-as-the-sole-outflow-route
#5
Satoru Tanioka, Yu Sato, Mai Nampei, Kazuhiko Tsuda, Shigehiko Niwa, Hidenori Suzuki
BACKGROUND: Cavernous sinus (CS) dural arteriovenous fistula (DAVF) rarely causes intracranial hemorrhage. The authors describe a case of CS DAVF presenting with intracranial hemorrhage, focusing on the findings in digital subtraction angiography (DSA) performed before and after the onset. CASE DESCRIPTION: An 80-year-old woman, diagnosed as Borden type 3 CS DAVF on DSA 2 years before, presented with subarachnoid hemorrhage and right temporal subcortical hemorrhage...
August 24, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27556959/venous-sinus-stenting-in-idiopathic-intracranial-hypertension-results-of-a-prospective-trial
#6
Marc J Dinkin, Athos Patsalides
BACKGROUND: Our goal was to evaluate the safety and efficacy of stenting of venous sinus stenosis (VSS) in patients with medically-refractory, medically-intolerant or fulminant idiopathic intracranial hypertension (IIH) in a prospective, observational study. METHODS: Thirteen patients with IIH who were refractory or intolerant to medical therapy or who presented with fulminant visual field (VF) loss underwent stenting of VSS at the transverse-sinus sigmoid sinus junction, using a Precise Pro carotid stent system (Cordis)...
August 23, 2016: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/27496529/new-frontiers-in-venous-sinus-stenting-illustrative-cases
#7
Bradley A Gross, Felipe C Albuquerque, Karam Moon, Cameron G McDougall
Idiopathic intracranial hypertension (IIH) occurs rarely, with severe patients recalcitrant to pharmacologic management often requiring cerebrospinal fluid diversion. We report two patients with variant IIH successfully treated with venous sinus stenting: 1) A 65-year-old man with severe vision loss, papilledema, and cognitive decline treated with four telescoped stents across a long, severely stenotic transverse-sigmoid system, and 2) a 58-year-old woman with headaches, vision loss, and papilledema secondary to a jugular paraganglioma causing severe jugular bulb stenosis that required contralateral venous sinus stenting...
November 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/27471977/imaging-of-intracranial-pressure-disorders
#8
John Holbrook, Amit M Saindane
: Intracranial pressure (ICP) is the pressure inside the bony calvarium and can be affected by a variety of processes, such as intracranial masses and edema, obstruction or leakage of cerebrospinal fluid, and obstruction of venous outflow. This review focuses on the imaging of 2 important but less well understood ICP disorders: idiopathic intracranial hypertension and spontaneous intracranial hypotension. Both of these ICP disorders have salient imaging findings that are important to recognize to help prevent their misdiagnosis from other common neurological disorders...
July 27, 2016: Neurosurgery
https://www.readbyqxmd.com/read/27199383/venous-sinus-stenting-in-patients-without-idiopathic-intracranial-hypertension
#9
Michael R Levitt, Felipe C Albuquerque, Bradley A Gross, Karam Moon, Ashutosh P Jadhav, Andrew F Ducruet, R Webster Crowley
BACKGROUND: Venous sinus stenting is an effective treatment for patients with idiopathic intracranial hypertension (IIH) and venous sinus stenosis. OBJECTIVE: To determine the usefulness of venous sinus stenting in the treatment of patients with symptomatic venous sinus stenosis without a diagnosis of IIH. METHODS: We performed a retrospective review of a prospective multicenter database of patients undergoing venous sinus stenting between January 2008 and February 2016...
May 19, 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/27197986/computational-modeling-of-venous-sinus-stenosis-in-idiopathic-intracranial-hypertension
#10
M R Levitt, P M McGah, K Moon, F C Albuquerque, C G McDougall, M Y S Kalani, L J Kim, A Aliseda
BACKGROUND AND PURPOSE: Idiopathic intracranial hypertension has been associated with dural venous sinus stenosis in some patients, but the hemodynamic environment of the dural venous sinuses has not been quantitatively described. Here, we present the first such computational fluid dynamics model by using patient-specific blood pressure measurements. MATERIALS AND METHODS: Six patients with idiopathic intracranial hypertension and at least 1 stenosis or atresia at the transverse/sigmoid sinus junction underwent MR venography followed by cerebral venography and manometry throughout the dural venous sinuses...
May 19, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27173363/peritherapeutic-hemodynamic-changes-of-carotid-stenting-evaluated-with-quantitative-dsa-in-patients-with-carotid-stenosis
#11
M M H Teng, F-C Chang, C-J Lin, L Chiang, J-S Hong, Y-H Kao
BACKGROUND AND PURPOSE: Quantitative data from DSA have become important tools for understanding hemodynamic changes of intracranial lesions. In this study, we evaluated 8 hemodynamic parameters in patients before and after carotid artery angioplasty. MATERIALS AND METHODS: DSA images of 34 patients with carotid stenosis who underwent angioplasty and stent placement were retrospectively analyzed. Eleven ROIs (M1, M2, A1, A2, the parietal vein, superior sagittal sinus, internal jugular vein, and 4 in the ICA) were selected on color-coded DSA...
May 12, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27154606/venous-abnormalities-leading-to-tinnitus-imaging-evaluation
#12
REVIEW
Michael A Reardon, Prashant Raghavan
Venous anomalies are the most commonly identified abnormality by imaging in the work-up for pulse synchronous tinnitus. Potential diagnoses include idiopathic intracranial hypertension, sigmoid sinus wall anomalies, transverse and sigmoid sinus stenosis, jugular bulb anomalies, and prominent posterior fossa emissary veins. These causes are discussed in detail along with the association between sigmoid sinus wall anomalies and idiopathic intracranial hypertension.
May 2016: Neuroimaging Clinics of North America
https://www.readbyqxmd.com/read/26967777/incidence-and-predictors-of-dural-venous-sinus-pressure-gradient-in-idiopathic-intracranial-hypertension-and-non-idiopathic-intracranial-hypertension-headache-patients-results-from-164-cerebral-venograms
#13
Michael R Levitt, Randall J Hlubek, Karam Moon, M Yashar S Kalani, Peter Nakaji, Kris A Smith, Andrew S Little, Kerry Knievel, Jane W Chan, Cameron G McDougall, Felipe C Albuquerque
OBJECTIVE Cerebral venous pressure gradient (CVPG) from dural venous sinus stenosis is implicated in headache syndromes such as idiopathic intracranial hypertension (IIH). The incidence of CVPG in headache patients has not been reported. METHODS The authors reviewed all cerebral venograms with manometry performed for headache between January 2008 and May 2015. Patient demographics, headache etiology, intracranial pressure (ICP) measurements, and radiographic and manometric results were recorded. CVPG was defined as a difference ≥ 8 mm Hg by venographic manometry...
March 11, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/26964555/letter-regarding-article-focal-stenosis-of-the-sigmoid-sinus-causing-intracranial-venous-hypertension-case-report-endovascular-management-and-review-of-the-literature
#14
EDITORIAL
https://www.readbyqxmd.com/read/26929666/idiopathic-intracranial-hypertension-ongoing-clinical-challenges-and-future-prospects
#15
REVIEW
Parunyou Julayanont, Amputch Karukote, Doungporn Ruthirago, Deepa Panikkath, Ragesh Panikkath
Idiopathic intracranial hypertension (IIH) is an uncommon disorder characterized by increased intracranial pressure without radiological or laboratory evidence of intracranial pathology except empty sella turcica, optic nerve sheath with filled out cerebrospinal fluid spaces, and smooth-walled nonflow-related venous sinus stenosis or collapse. This condition typically affects obese women. The incidence of IIH is increasing with the rising prevalence of obesity. Persistent headache is the most common symptom...
2016: Journal of Pain Research
https://www.readbyqxmd.com/read/26863329/a-case-series-of-dural-venous-sinus-stenting-in-idiopathic-intracranial-hypertension-association-of-outcomes-with-optical-coherence-tomography
#16
Kyle A Smith, Jeremy C Peterson, Paul M Arnold, Paul J Camarata, Thomas J Whittaker, Michael G Abraham
: Purpose/Aim: Pseudotumor cerebri or idiopathic intracranial hypertension (IIH) is characterized by increased intracranial pressure of unknown etiology. A subset of patients has shown benefit from endovascular dural venous sinus stenting (DVSS). We sought to identify a population of IIH patients who underwent DVSS to assess outcomes. MATERIALS AND METHODS: A retrospective study was performed to identify IIH patients with dural sinus stenosis treated with DVSS. Outcome measures included dural sinus pressure gradients, peripapillary retinal nerve fiber layer (RNFL) thickness using optical coherence tomography and improvement in symptoms...
February 29, 2016: International Journal of Neuroscience
https://www.readbyqxmd.com/read/26747875/prevalence-of-dural-venous-sinus-stenosis-and-hypoplasia-in-a-generalized-population
#17
Christopher R Durst, David A Ornan, Michael A Reardon, Prachi Mehndiratta, Sugoto Mukherjee, Robert M Starke, Max Wintermark, Avery Evans, Mary E Jensen, R Webster Crowley, John Gaughen, Kenneth C Liu
BACKGROUND AND PURPOSE: While recent literature has described the prevalence of transverse sinus stenosis in patients with idiopathic intracranial hypertension, tinnitus, and refractory headaches, it is unclear what the prevalence is in the general population. This study evaluates the prevalence of venous sinus stenosis and hypoplasia in the general patient population. MATERIALS AND METHODS: 355 of 600 consecutive patients who underwent CT angiography of the head met the inclusion criteria...
November 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/26641809/current-concepts-in-pseudotumor-cerebri
#18
REVIEW
Clotilde Hainline, Janet C Rucker, Laura J Balcer
PURPOSE OF REVIEW: Idiopathic intracranial hypertension (IIH) is a potentially blinding disorder of unknown cause, characterized by elevated intracranial pressure in the absence of a mass lesion, venous sinus thrombosis, or meningitis. This review summarizes recent developments and insights from leading treatment trials, emerging treatment options, and evolving ways to evaluate IIH. RECENT FINDINGS: The Idiopathic Intracranial Hypertension Treatment Trial is the first large-scale, randomized, prospective study to evaluate medical treatment of patients with mild vision loss...
February 2016: Current Opinion in Neurology
https://www.readbyqxmd.com/read/26516306/current-status-of-the-application-of-intracranial-venous-sinus-stenting
#19
REVIEW
Kan Xu, Tiecheng Yu, Yongjie Yuan, Jinlu Yu
The intracranial venous sinus is an important component of vascular disease. Many diseases involve the venous sinus and are accompanied by venous sinus stenosis (VSS), which leads to increased venous pressure and high intracranial pressure. Recent research has focused on stenting as a treatment for VSS related to these diseases. However, a systematic understanding of venous sinus stenting (VS-Stenting) is lacking. Herein, the literature on idiopathic intracranial hypertension (IIH), venous pulsatile tinnitus, sinus thrombosis, high draining venous pressure in dural arteriovenous fistula (AVF) and arteriovenous malformation (AVM), and tumor-caused VSS was reviewed and analyzed to summarize experiences with VS-Stenting as a treatment...
2015: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/26457687/brain-imaging-in-idiopathic-intracranial-hypertension
#20
REVIEW
Samuel Bidot, Amit M Saindane, Jason H Peragallo, Beau B Bruce, Nancy J Newman, Valérie Biousse
BACKGROUND: The primary role of brain imaging in idiopathic intracranial hypertension (IIH) is to exclude other pathologies causing intracranial hypertension. However, subtle radiologic findings suggestive of IIH have emerged with modern neuroimaging. This review provides a detailed description of the imaging findings reported in IIH and discusses their possible roles in the pathophysiology and the diagnosis of IIH. EVIDENCE ACQUISITION: References were identified by searches of PubMed from 1955 to January 2015, with the terms "idiopathic intracranial hypertension," "pseudotumor cerebri," "intracranial hypertension," "benign intracranial hypertension," "magnetic resonance imaging," "magnetic resonance venography," "computed tomography (CT)," "CT venography," "imaging," and "cerebrospinal fluid (CSF) leak...
December 2015: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
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