keyword
MENU ▼
Read by QxMD icon Read
search

Cerebral venous

keyword
https://www.readbyqxmd.com/read/28237923/maven-an-algorithm-for-multi-parametric-automated-segmentation-of-brain-veins-from-gradient-echo-acquisitions
#1
Serena Monti, Sirio Cocozza, Pasquale Borrelli, Sina Straub, Mark E Ladd, Marco Salvatore, Enrico Tedeschi, Giuseppe Palma
Cerebral vein analysis provides a chance to study, from an unusual viewpoint, an entire class of brain diseases, including neurodegenerative disorders and traumatic brain injuries. Manual segmentation approaches can be used to assess vascular anatomy, but they are observer-dependent and time consuming; therefore, automated approaches are desirable, as they also improve reproducibility. In the present work, a new, fully automated algorithm, based on structural, morphological and relaxometric information, is proposed to segment the entire cerebral venous system from MR images...
February 20, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28236869/intraventricular-hemorrhage-after-dural-fistula-embolization
#2
Joana Chaves Gonçalves Rodrigues de Carvalho, Francisco Javier Tercero Machin, Luis San Roman Manzanera, Jordi Blasco Andaluz, Sílvia Herrero Nogués, Núria Peix Soriano, Victor Obach Baurier, Enrique Jesus Carrero Cardenal
BACKGROUND AND OBJECTIVES: Dural arteriovenous fistulas are anomalous shunts between dural arterial and venous channels whose nidus is located between the dural leaflets. For those circumstances when invasive treatment is mandatory, endovascular techniques have grown to become the mainstay of practice, choice attributable to their reported safety and effectiveness. We describe the unique and rare case of a dural arteriovenous fistula treated by transarterial embolization and complicated by an intraventricular hemorrhage...
March 2017: Brazilian Journal of Anesthesiology
https://www.readbyqxmd.com/read/28235957/cerebral-arteriovenous-malformation-flow-is-associated-with-venous-intimal-hyperplasia
#3
Sophia F Shakur, Ahmed E Hussein, Sepideh Amin-Hanjani, Tibor Valyi-Nagy, Fady T Charbel, Ali Alaraj
BACKGROUND AND PURPOSE: The pathogenesis of venous intimal hyperplasia and venous outflow stenosis associated with cerebral arteriovenous malformation (AVM) draining veins is poorly understood. We sought to determine the relationship between maximum vein wall thickness and AVM flow. METHODS: Patients who underwent AVM surgical resection and had flow measured before treatment using quantitative magnetic resonance angiography were retrospectively reviewed. Specimens were mounted on slides and stained with elastin special stain...
February 24, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28235955/validation-of-cerebral-arteriovenous-malformation-hemodynamics-assessed-by-dsa-using-quantitative-magnetic-resonance-angiography-preliminary-study
#4
Sophia F Shakur, Denise Brunozzi, Ahmed E Hussein, Andreas Linninger, Chih-Yang Hsu, Fady T Charbel, Ali Alaraj
BACKGROUND: The hemodynamic evaluation of cerebral arteriovenous malformations (AVMs) using DSA has not been validated against true flow measurements. OBJECTIVE: To validate AVM hemodynamics assessed by DSA using quantitative magnetic resonance angiography (QMRA). MATERIALS AND METHODS: Patients seen at our institution between 2007 and 2016 with a supratentorial AVM and DSA and QMRA obtained before any treatment were retrospectively reviewed...
February 24, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28235859/an-international-collaboration-studying-the-physiological-and-anatomical-cerebral-effects-of-carbon-dioxide-during-head-down-tilt-bed-rest-the-spacecot-study
#5
Karina Marshall-Goebel, Edwin Mulder, Dorit Donoviel, Gary Strangman, Jose I Suarez, Chethan Venkatasubba Rao, Petra Frings-Meuthen, Ulrich Limper, Jörn Rittweger, Eric M Bershad
Exposure to the microgravity environment results in various adaptive and maladaptive physiological changes in the human body, with notable ophthalmic abnormalities developing during 6-month missions on the International Space Station (ISS). These findings have led to the hypothesis that the loss of gravity induces a cephalad fluid shift, decreased cerebral venous outflow and increased intracranial pressure (ICP) which may be further exacerbated by increased ambient carbon dioxide (CO2) levels on the ISS. Here we describe the "SPACECOT study" (Studying the Physiological and Anatomical Cerebral Effects of CO2 during Head-Down Tilt), a randomized, double-blinded cross-over design study with two conditions: 29 h of 12° head-down tilt (HDT) with ambient air and 29 h of 12° HDT with 0...
February 23, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28235512/transient-global-amnesia-in-immediate-postoperative-period-a-diagnostic-dilemma
#6
Anudeep Jafra, Tanvir Samra, Vasudha Gupta, M Seran Kumar Reddy
INTRODUCTION: Transient Global Amnesia (TGA) is short-term inability to form new memories despite otherwise normal neurological function. There is associated anterograde and retrograde amnesia. The memory loss is often accompanied by repetitive questioning and temporal disorientation while higher cognitive functions are preserved. The symptoms usually resolve by 24h. CASE REPORT: We present an interesting case of 31year old female who was planned for robotically assisted right sided pyeloplasty...
February 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28228911/ultrasonographic-detection-of-air-in-the-superior-sagittal-sinus-in-a-neonate-with-transposition-of-the-great-arteries
#7
Michael D Rivers-Bowerman, Sharon Litz, Pierre Schmit
Cerebral venous air embolism is a relatively rare condition that arises from iatrogenic or traumatic introduction of air into the venous system. We describe the ultrasonographic findings in a 1-day-old infant with iatrogenic retrograde cerebral venous air embolism, which to our knowledge, is the earliest case reported in the literature to date. This case highlights the role of cerebral ultrasonography in the detection and surveillance of cerebral venous air embolism in neonates.
March 2017: Radiology case reports
https://www.readbyqxmd.com/read/28228636/progressive-ischemic-stroke-due-to-thyroid-storm-associated-cerebral-venous-thrombosis
#8
Natsumi Tanabe, Eiji Hiraoka, Masataka Hoshino, Gautam A Deshpande, Kana Sawada, Yasuhiro Norisue, Jumpei Tsukuda, Toshihiko Suzuki
BACKGROUND Cerebral venous thrombosis (CVT) is a rare but fatal complication of hyperthyroidism that is induced by the hypercoagulable state of thyrotoxicosis. Although it is frequently difficult to diagnose CVT promptly, it is important to consider it in the differential diagnosis when a hyperthyroid patient presents with atypical neurologic symptoms. CASE REPORT A 49-year-old Japanese female with unremarkable medical history came in with thyroid storm and multiple progressive ischemic stroke identified at another hospital...
February 23, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28228623/elucidation-of-mechanism-of-blood-brain-barrier-damage-for-prevention-and-treatment-of-vascular-dementia
#9
Masaki Ueno
It is well-known that the blood-brain barrier (BBB) plays significant roles in transporting intravascular substances into the brain. The BBB in cerebral capillaries essentially impedes the influx of intravascular compounds from the blood to the brain, while nutritive substances, such as glucose, can be selectively transported through several types of influx transporters in endothelial cells. In the choroid plexus, intravascular substances can invade the parenchyma as fenestrations exist in endothelial cells of capillaries...
February 22, 2017: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/28228575/risk-of-pulmonary-embolism-after-cerebral-venous-thrombosis
#10
Ava L Liberman, Alexander E Merkler, Gino Gialdini, Steven R Messé, Michael P Lerario, Santosh B Murthy, Hooman Kamel, Babak B Navi
BACKGROUND AND PURPOSE: Cerebral vein thrombosis (CVT) is a type of venous thromboembolism. Whether the risk of pulmonary embolism (PE) after CVT is similar to the risk after deep venous thrombosis (DVT) is unknown. METHODS: We performed a retrospective cohort study using administrative data from all emergency department visits and hospitalizations in California, New York, and Florida from 2005 to 2013. We identified patients with CVT or DVT and the outcome of PE using previously validated International Classification of Diseases, Ninth Revision, Clinical Modification codes...
February 22, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28228323/evaluation-of-the-role-of-susceptibility-weighted-imaging-in-thrombolytic-therapy-for-acute-ischemic-stroke
#11
Guangjian Zhao, Ling Sun, Ziran Wang, Liquan Wang, Zhongrong Cheng, Hongyan Lei, Daiqun Yang, Yansen Cui, Shirui Zhang
We inspected low-intensity venous signals and microbleeds in patients with acute ischemic stroke (AIS) using susceptibility-weighted imaging (SWI) before and after administration of within-thrombolytic-time-window thrombolytic therapies, and observed their prognosis and safety, in order to guide individualized thrombolytic therapies. Patients with AIS were divided into groups A or B according to the presence of symmetric or asymmetric veins on SWI, and were re-inspected by SWI after intravenous thrombolysis using recombinant tissue plasminogen activator (rt-PA)...
February 19, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28222615/clinical-associations-biological-risk-factors-and-outcomes-of-cerebral-venous-sinus-thrombosis
#12
Hafize Nalan Gunes, Burcu Gokce Cokal, Selda Keskin Guler, Tahir Kurtulus Yoldas, Umit Yavuz Malkan, Cemile Sencer Demircan, Mehmet Ilker Yon, Zeynep Yoldas, Gursel Gunes, Ibrahim Celalettin Haznedaroglu
Objective Cerebral venous sinus thrombosis (CVST) is a rare cerebrovascular disease affecting young adults. The majority of the patients are female. The aim of this study is to assess the clinical associations, risk factors and outcomes of the patients with CVST. Methods The data of 75 patients with CVST admitted to our hospital between 2006 and 2016 were reviewed. Demographic and clinical features and the thrombophilic risk factors of the patients were recorded. The localizations of the thrombi were determined and modified Rankin score at the time of onset and discharge were calculated...
December 2016: Journal of International Medical Research
https://www.readbyqxmd.com/read/28213478/endovascular-mechanical-thrombectomy-for-cerebral-venous-sinus-thrombosis-a-systematic-review
#13
REVIEW
Adeel Ilyas, Ching-Jen Chen, Daniel M Raper, Dale Ding, Thomas Buell, Panogiotis Mastorakos, Kenneth C Liu
BACKGROUND: Cerebral venous sinus thrombosis (CVST) is an uncommon form of stroke that, when severe, can be a therapeutic challenge. Endovascular mechanical thrombectomy (EMT) techniques have significantly evolved over the past decade, but data regarding the efficacy and safety of EMT for CVST are poorly defined. OBJECTIVE: To summarize the large number of case series on this relatively rare condition and establish trends in the outcomes of EMT for CVST. METHODS: A literature review was performed using PubMed and Medline to identify reports of three or more patients with CVST treated with EMT...
February 17, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28212801/notch-signaling-in-vascular-smooth-muscle-cells
#14
J T Baeten, B Lilly
The Notch signaling pathway is a highly conserved pathway involved in cell fate determination in embryonic development and also functions in the regulation of physiological processes in several systems. It plays an especially important role in vascular development and physiology by influencing angiogenesis, vessel patterning, arterial/venous specification, and vascular smooth muscle biology. Aberrant or dysregulated Notch signaling is the cause of or a contributing factor to many vascular disorders, including inherited vascular diseases, such as cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy, associated with degeneration of the smooth muscle layer in cerebral arteries...
2017: Advances in Pharmacology
https://www.readbyqxmd.com/read/28212190/endothelial-cell-disease-emerging-knowledge-from-cerebral-cavernous-malformations
#15
Maria Grazia Lampugnani, Matteo Malinverno, Elisabetta Dejana
PURPOSE OF REVIEW: Endothelial cells dysfunctions are crucial determinants of several human diseases. We review here the most recent reports on endothelial cell defects in cerebral cavernous malformations (CCMs), particularly focusing on adherens junctions. CCM is a vascular disease that affects specifically the venous microvessels of the central nervous system and which is caused by loss-of-function mutation in any one of the three CCM genes (CCM1, 2 or 3) in endothelial cells. The phenotypic result of these mutations are focal vascular malformations that are permeable and fragile causing neurological symptoms and occasionally haemorrhagic stroke...
February 16, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28211916/role-of-endothelial-nitric-oxide-synthase-and-endothelin-1-polymorphism-genes-with-the-pathogenesis-of-intraventricular-hemorrhage-in-preterm-infants
#16
Dawid Szpecht, Janusz Gadzinowski, Agnieszka Seremak-Mrozikiewicz, Grażyna Kurzawińska, Marta Szymankiewicz
In the pathogenesis of neonatal intraventricular hemorrhage (IVH) in preterm infants, an important role is played by changes in venous and arterial cerebral flows. It has been shown that the ability of autoregulation of cerebral flows in response to variations in arterial blood pressure in preterm infants is impaired. This impaired autoregulation causes an increased risk of germinal matrix rupture and IVH occurrence. We examined three polymorphisms of genes, related to regulation of blood flow, for an association with IVH in 100 preterm infants born from singleton pregnancy, before 32 + 0 weeks of gestation, exposed to antenatal steroids therapy, and without congenital abnormalities...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28209177/is-posture-related-craniospinal-compliance-shift-caused-by-jugular-vein-collapse-a-theoretical-analysis
#17
Manuel Gehlen, Vartan Kurtcuoglu, Marianne Schmid Daners
BACKGROUND: Postural changes are related to changes in cerebrospinal fluid (CSF) dynamics. While sitting up leads to a decrease in cranial CSF pressure, it also causes shifts in the craniospinal CSF volume and compliance distribution. We hypothesized that jugular vein collapse in upright posture is a major contributor to these shifts in CSF volume and compliance. METHODS: To test this hypothesis, we implemented a mathematical lumped-parameter model of the CSF system and the relevant parts of the cardiovascular system...
February 16, 2017: Fluids and Barriers of the CNS
https://www.readbyqxmd.com/read/28208950/cerebral-venous-thrombosis-in-pregnancy-a-poignant-allegory-of-an-unusual-case
#18
Sheeba Marwah, Gaikwad Harsha Shailesh, Sumedha Gupta, Manjula Sharma, Pratima Mittal
Cerebral Venous Thrombosis (CVT), also known as cortical venous, cerebral sinus, cerebral venous sinus, or dural sinus thrombosis, is an infrequent grave condition affecting pregnant females, resulting from clot formation in one of the many outflow tracts of the brain. Although pregnancy-associated stroke or CVT is uncommon, the risk of stroke is greatly increased above the low baseline rate in young patients during late pregnancy and, even more so, during the puerperium. Haemorrhagic infarction can occur in the acute stage of CVT...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208940/neurological-disorders-complicating-pregnancy-focus-on-obstetric-outcome
#19
Sandya Renukesh, Lavanya Rai
INTRODUCTION: Neurological disorders in pregnancy can be pregnancy related or can be caused by exacerbation of a pre-existing neurological condition or sometimes may even be detected for the first time during pregnancy in which it might be an incidental finding. The diagnosis and management of the neurological disorders in pregnancy is always a challenging task due to varied symptomatology and risks to the fetus. The evaluation and management should be performed in a stepwise fashion and requires multidisciplinary approach...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28207907/argon-does-not-affect-cerebral-circulation-or-metabolism-in-male-humans
#20
Frank Grüne, Stephan Kazmaier, Sanne Elisabeth Hoeks, Robert Jan Stolker, Marc Coburn, Andreas Weyland
OBJECTIVE: Accumulating data have recently underlined argon´s neuroprotective potential. However, to the best of our knowledge, no data are available on the cerebrovascular effects of argon (Ar) in humans. We hypothesized that argon inhalation does not affect mean blood flow velocity of the middle cerebral artery (Vmca), cerebral flow index (FI), zero flow pressure (ZFP), effective cerebral perfusion pressure (CPPe), resistance area product (RAP) and the arterio-jugular venous content differences of oxygen (AJVDO2), glucose (AJVDG), and lactate (AJVDL) in anesthetized patients...
2017: PloS One
keyword
keyword
48250
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"