Results 41 to 50 of about 101,662 (224)

Surface Metrology of Cerebral Arteries Luminal Surface [PDF]

arXiv, 2023
Atherosclerotic lesions within carotid and cerebral vessels are likely to influence hemodynamics and manifest into vascular pathologies, including Alzheimers Disease and ischemic stroke. Hemodynamics are influenced by changes in luminal diameter of vessels and wall shear stress derived from turbulence, which directly relates to the surface topography ...
arxiv  

Shape‐Reconfigurable Crack‐Based Strain Sensor with Ultrahigh and Tunable Sensitivity

Advanced Functional Materials, EarlyView.
A highly sensitive crack‐based sensor with tunable strain detection capabilities is demonstrated through controlled nanocrack formation in a line‐patterned shape memory polymer substrate. The sensor design integrates thermoplastic polyurethane and poly(lactic acid), enabling thermo‐responsive reconfiguration of crack geometry.
Seungjae Lee, Youngoh Lee, Cheolhong Park, Yun Goo Ro, Min Sub Kwak, Geonyoung Jeong, Junseo Park, Hyejin Lee, Pan Kyeom Kim, Sung‐Il Chung, Hyunhyub Ko   +10 more
wiley   +1 more source

Uncertainty-based quality assurance of carotid artery wall segmentation in black-blood MRI [PDF]

arXiv, 2023
The application of deep learning models to large-scale data sets requires means for automatic quality assurance. We have previously developed a fully automatic algorithm for carotid artery wall segmentation in black-blood MRI that we aim to apply to large-scale data sets.
arxiv  

Hydrogel Adhesive Integrated‐Microstructured Electrodes for Cuff‐Free, Less‐Invasive, and Stable Interface for Vagus Nerve Stimulation

Advanced Healthcare Materials, EarlyView.
In this study, a cuff‐free, less‐invasive surgical approach for vagus nerve stimulation (VNS) by combining ultrathin Y‐shaped kirigami electrodes is developed with a chemically cross‐linked hydrogel adhesive (hydrogel‐kirigami). Unlike conventional cuff implantation, which may damage nerves and nearby critical vessels, this new technique minimizes ...
Jae Young Park, Jongcheon Lim, Carl R. Russell III, Pei‐Lun Chen, Deniz Eksioglu, Seokkyoon Hong, Juan C. Mesa, Matthew P. Ward, Chi Hwan Lee, Hyowon Lee   +9 more
wiley   +1 more source

Non‐Surgical, In‐Stent Membrane Bioelectronics for Long‐Term Intracranial Pressure Monitoring

Advanced Healthcare Materials, EarlyView.
This image shows a sequence of long‐term intracranial pressure monitoring using non‐surgical, in‐stent membrane bioelectronics. Abstract Traditional intracranial pressure (ICP) monitoring methods, using intraventricular catheters, face significant limitations, including high invasiveness, discrete data, calibration complexities, and drift issues, which
Jimin Lee, Allison Bateman, Mi Hyeon Kim, Bruno Rigo, Hodam Kim, Jaeho Lee, Yun Hyeok Choi, Robert Herbert, Deok Hee Lee, Woon‐Hong Yeo   +9 more
wiley   +1 more source

Analysis of atherosclerotic plaque distribution in the carotid artery

Clinical Cardiology, Volume 45, Issue 12, Page 1272-1276, December 2022., 2022
Abstract Background The present study was designed to investigate the hypothesis that the outer wall at the carotid bifurcation is the most common area of atherosclerotic plaque deposition due to the low shear stress. Hypothesis We hypothesized that the most common site of arteriosclerosis in carotid arteries is different in the early and late stages ...
Shin‐Seok Yang, Shin‐Young Woo, Dong‐Ik Kim   +2 more
wiley   +1 more source

Warfarin Treatment Is Associated to Increased Internal Carotid Artery Calcification

Frontiers in Neurology, 2021
Background: Long-term treatment with the vitamin K antagonist warfarin is widely used for the prevention of venous thrombosis and thromboembolism. However, vitamin K antagonists may promote arterial calcification, a phenomenon that has been previously ...
Krista Nuotio, Krista Nuotio, Suvi M. Koskinen, Suvi M. Koskinen, Laura Mäkitie, Laura Mäkitie, Jarno Tuimala, Petra Ijäs, Petra Ijäs, Hanna M. Heikkilä, Jani Saksi, Pirkka Vikatmaa, Pia Sorto, Sonja Kasari, Ilari Paakkari, Heli Silvennoinen, Leena Valanne, Mikko I. Mäyränpää, Lauri Soinne, Lauri Soinne, Petri T. Kovanen, Perttu J. Lindsberg, Perttu J. Lindsberg   +22 more
doaj   +1 more source

Computational Fluid Dynamic Simulations In a Model of a Carotid Bifurcation Under Steady Flow Conditions [PDF]

arXiv, 2020
Strokes are still one of the leading causes for death after heart diseases and cancer in all over the world. Most strokes happen because an artery that carries blood uphill from the heart to the head gets clogged. Most of the time, as with heart attacks, the problem is atherosclerosis, hardening of the arteries, calcified buildup of fatty deposits on ...
arxiv  

Visualizing Carotid Blood Flow Simulations for Stroke Prevention [PDF]

arXiv, 2021
In this work, we investigate how concepts from medical flow visualization can be applied to enhance stroke prevention diagnostics. Our focus lies on carotid stenoses, i.e., local narrowings of the major brain-supplying arteries, which are a frequent cause of stroke.
arxiv  

Nanostructured 316L Stainless Steel Stent Surfaces Improve Corrosion Resistance, and Enhance Endothelization and Hemocompatibility

Advanced Materials Interfaces, EarlyView.
This study investigates the impact of nanostructured surface modification on corrosion resistance, HUVEC functions, and platelet interactions of 316L SS for cardiovascular stents. Nanostructured surfaces enhanced HUVEC proliferation, migration, and angiogenesis‐related gene expression while reducing platelet adhesion and hemolysis.
Yasar Kemal Erdogan, Pelin Mutlu, Batur Ercan   +2 more
wiley   +1 more source