Results 51 to 60 of about 9,368 (247)

Reactive suicidality after diagnosis of large complex brainstem arteriovenous malformation

Interdisciplinary Neurosurgery, 2019
Brain Arteriovenous malformations (AVM) are dangerous and rare vascular malformations. They have potential to cause headache, intracranial hemorrhage (ICH), focal neurologic deficit (FND) and seizure.
Benjamin Jang, Vaishak Amblee, Farah Ciftci   +2 more
doaj  

The Use of Intraoperative Microvascular Doppler in Vascular Neurosurgery: Rationale and Results—A Systematic Review

Brain Sciences
Surgical treatment of neurovascular lesions like intracranial aneurysms, arteriovenous malformations and arteriovenous dural fistulas is still associated with high morbidity. Several recent studies are providing increasing insights into reliable tools to
Vincenzo Gulino, Lara Brunasso, Chiara Avallone, Benedetta Maria Campisi, Lapo Bonosi, Roberta Costanzo, Emanuele Cammarata, Carmelo Lucio Sturiale, Adriana Cordova, Domenico Gerardo Iacopino, Rosario Maugeri   +10 more
doaj   +1 more source

A computational study of viscoelastic blood flow in an arteriovenous fistula [PDF]

arXiv, 2020
A finite element analysis of flows of an Oldroyd-B fluid is developed, to simulate blood flow in an arteriovenous fistula. The model uses a combination of a standard conforming finite element approximation for the momentum equation, and the discontinuous Galerkin method, with upwinding, for the equation governing the evolution of the extra stress.
arxiv  

Mosaic KRAS Mutation in Schimmelpenning–Feuerstein–Mims Syndrome With Overlapping Oculoectodermal Syndrome and Encephalocraniocutaneous Lipomatosis Features

Pediatric Dermatology, EarlyView.
ABSTRACT We report a patient with clinically confirmed Schimmelpenning–Feuerstein–Mims (SFM) syndrome but many overlapping features with oculoectodermal syndrome (OES) and encephalocraniocutaneous lipomatosis (ECCL). Whole exome sequencing revealed a mosaic KRAS c.436G>A, p.(Ala146Thr) mutation, previously identified in three OES and ECCL patients ...
Hyvönen Hanna, Kettunen Kaisa, Avela Kristiina, Kivirikko Sirpa, Jeskanen Leila, Suominen Sinikka, Salminen Päivi, Hannula‐Jouppi Katariina   +7 more
wiley   +1 more source

High fidelity blood flow in a patient-specific arteriovenous fistula [PDF]

arXiv, 2020
An arteriovenous fistula, created by artificially connecting segments of a patient's vasculature, is the preferred way to gain access to the bloodstream for kidney dialysis. The increasing power and availability of supercomputing infrastructure means that it is becoming more realistic to use simulations to help identify the best type and location of a ...
arxiv  

Interleaved flow‐sensitive dephasing (iFSD): Toward enhanced blood flow suppression and preserved T1 weighting and overall signals in 3D TSE‐based neuroimaging

Magnetic Resonance in Medicine, Volume 93, Issue 5, Page 1911-1923, May 2025.
Abstract Purpose To develop and validate a 3D turbo spin‐echo (TSE)–compatible approach to enhancing black‐blood (BB) effects while preserving T1 weighting and overall SNR. Methods Following the excitation RF pulse, a 180° RF pulse sandwiched by a pair of flow‐sensitive dephasing (FSD) gradient pulses in the phase‐ (y) and partition‐encoding (z ...
Qingle Kong, Jiayu Xiao, Mark S. Shiroishi, Nasim Sheikh‐Bahaei, Steven Y. Cen, Kasra Khatibi, William J. Mack, Jason C. Ye, Paul E. Kim, Xiaoming Bi, David Saloner, Qi Yang, Eric Chang, Zhaoyang Fan   +13 more
wiley   +1 more source

RAS Pathway Mutations and Therapeutics in Vascular Anomalies

Pediatric Blood &Cancer, Volume 72, Issue 5, May 2025.
ABSTRACT Vascular anomalies (VAs) are a diverse group of vascular tumors and vascular malformations (VMs). VMs are characterized by abnormal vessel development, overgrowth, and dysfunction. Coagulopathy, edema, and effusions can cause severe morbidity and mortality in children and adults with these diseases. Germline or somatic mutations in the RAS/RAF/
Sara Alharbi, Svatava Merkle, Adrienne M. Hammill, Andrew M. Waters, Timothy D. Le Cras   +4 more
wiley   +1 more source

Deep denoising autoencoder-based non-invasive blood flow detection for arteriovenous fistula [PDF]

arXiv, 2023
Clinical guidelines underscore the importance of regularly monitoring and surveilling arteriovenous fistula (AVF) access in hemodialysis patients to promptly detect any dysfunction. Although phono-angiography/sound analysis overcomes the limitations of standardized AVF stenosis diagnosis tool, prior studies have depended on conventional feature ...
arxiv  

Endovascular Neurosurgery in the Northern Macro- region of Rio Grande do Sul: Part I

Brazilian Neurosurgery, 2016
Introduction The city of Passo Fundo, in the north of the Rio Grande do Sul state, has been standing out in the health care field for many years. The state has become a reference in endovascular interventional neuroradiology.
José Ricardo Vanzin, Nério Dutra Azambuja Jr, Leonardo Frighetto, Alan Christmann Frohlich, Daniel Lima Varela, Paulo Mesquita Filho, Alex Roman, Luciano Bambini Manzato   +7 more
doaj   +1 more source

Simultaneous self-organization of arterial and venous networks driven by the physics of global power optimization [PDF]

arXiv, 2023
Understanding of vascular organization is a long-standing problem in quantitative biology and biophysics and is essential for the growth of large cultured tissues. Approaches are needed that (1) make predictions of optimal arteriovenous networks in order to understand the natural vasculatures that originate from evolution (2) can design vasculature for
arxiv