Results 91 to 100 of about 16,886 (302)

Synergistic Effect of Gradient Conductivity and Gradient Microstructures Enabled Ultrasensitive and Ultrabroad Linear Flexible Tactile Sensors

Advanced Science, EarlyView.
A design of double gradient effect is proposed to resolve the contradictory optimization on sensitivity and linearity of piezoresistive tactile sensors. The ultrawide linearity is realized by the sequential trigger of pressure‐induced gradient conductivity‐enabled linear current owing to the gradient microstructures.
Yao Fang, Yiwei Wang, Bing Zheng, Liu Yang, Jingyi Yue, Qian Zhou, Jinrong Huang, Yongyun Mao, Qian Li, Jifei Wang, Dongsheng Tang, Yuxin Tang, Bingpu Zhou, Bing Ji   +13 more
wiley   +1 more source

Quantifying myocardial perfusion during MR-guided interventions without exogenous contrast agents: intra-arterial spin labeling

Zeitschrift für Medizinische Physik
Purpose: To test intra-arterial spin labeling (iASL) using active guiding catheters for myocardial perfusion measurements during magnetic resonance (MR)-guided interventions in a pig study. Methods: In this work, a single-loop radiofrequency (RF) coil at
Simon Reiss, Kevin Wäscher, Ali Caglar Özen, Thomas Lottner, Timo Heidt, Constantin von zur Mühlen, Michael Bock   +6 more
doaj   +1 more source

Perfusion magnetic resonance imaging provides additional information as compared to anatomical imaging for decision-making in vestibular schwannoma

European Journal of Radiology Open, 2016
Objective: The added value of perfusion MRI for decision-making in vestibular schwannoma (VS) patients is unknown. MRI offers two perfusion methods: the first employing contrast agent (dynamic susceptibility contrast (DSC)-MRI) that provides information ...
M.C. Kleijwegt, A.G.L. van der Mey, F.T. Wiggers-deBruine, M.J.A Malessy, M.J.P. van Osch   +4 more
doaj   +1 more source

Arterial spin labeling MRI - clinical applications

, 2019
Arterial spin labeling (ASL) is a modern magnetic-resonance technique for evaluation of brain perfusion. One of its most important advantages is that there is no need for an injection of an exogenous contrast material.
Balev, Boyan; Medical University of Varna, Kalchev, Emilian; Medical University of Varna, Georgiev, Radoslav; Medical University of Varna   +2 more
core   +1 more source

Perfusion Deficits Detected by Arterial Spin-Labeling in Patients with TIA with Negative Diffusion and Vascular Imaging [PDF]

, 2013
Background and purposeA substantial portion of clinically diagnosed TIA cases is imaging-negative. The purpose of the current study is to determine if arterial spin-labeling is helpful in detecting perfusion abnormalities in patients presenting ...
Wang, DJJ, Ellingson, BM, He, R, Linetsky, M, Pope, WB, Qiao, XJ, Salamon, N   +6 more
core   +1 more source

MRI assessment of cerebral perfusion in clinical trials

, 2023
Neurodegenerative mechanisms affect the brain through a variety of processes that are reflected as changes in brain structure and physiology. Although some biomarkers for these changes are well established, others are at different stages of development ...
Golay, Xavier, Danny Wang, O'Callaghan, James, Becerra, L, Chappell, M, Wang, D, Becerra, Lino, Courtney Bishop, Theriault, W, Xavier Golay, Wang, X, O'Callaghan, J, Theriault, Wendy, Albani, Justin, Wang, Danny, Bishop, C, Golay, X, Gayhoor, Ali, Justin Albani, Michael Chappell, Wang, Xue, Wendy Theriault, James O'Callaghan, Bishop, Courtney, Chappell, Michael, Albani, J, Lino Becerra, Gayhoor, A, Ali Gayhoor, Xue Wang   +29 more
core   +1 more source

CD177 Deficiency Defines a Stable Subtype of Human Neutrophil Granulocytes with Tumor Promoting Activity

Advanced Science, EarlyView.
Human neutrophils exist as two epigenetically imprinted subtypes defined by stable CD177 expression or absence — a ratio that persists across time, circadian rhythms, and inflammation. CD177− neutrophils display a distinct molecular landscape enriched in arginase 1 and lipid metabolism markers, accumulate in head‐and‐neck tumors, and associate with ...
Marcel Jung, Alexander Beer, Susmita Ghosh, Ekaterina Pylaeva, Belal Alshaar, Tobias Tertel, Nils Bastian Leimkühler, Thomas Schroeder, Janine Gronewold, Nina Hagemann, Ayan Mohamud Yusuf, Benedikt Frank, Yiqiao Zhang, Dennis Nagel, Kim Schloeßer, Laura Karsch, Emily Hedtfeld, Sabrina Lohmann, Kathrin Blank, Andreas Kraus, Max Krumbein, Nastassia Kabankova, Hongxiao Wang, Almke Bader, Mathis Richter, Fengjun Zhang, Raphael Chevre, Bernd Giebel, Stephan Lang, Anika Grüneboom, Daniela Maier‐Begandt, Anja Hasenberg, Oliver Soehnlein, Hans Christian Reinhardt, Sven Heiles, Jianxu Chen, Jadwiga Jablonska, Albert Sickmann, Dirk M. Hermann, Matthias Gunzer   +39 more
wiley   +1 more source

Magnetic resonance imaging of cerebral blood flow in animal stroke models

Brain Circulation, 2016
Perfusion could provide useful information on the metabolic status and functional status of tissues and organs. This review summarizes the most commonly used perfusion measurement methods: Dynamic susceptibility contrast (DSC) and arterial spin labeling (
Qiang Shen, Timothy Q Duong
doaj   +1 more source

Pseudocontinuous Arterial Spin Labeling Perfusion Magnetic Resonance Imaging-a Normative Study of Reproducibility in the Human Brain

, 2012
Pseudocontinuous arterial spin labeling (PCASL), a newly proposed perfusion magnetic resonance imaging (MRI) technique, has the potential of providing a better balance between labeling efficiency and signal-to- noise ratio than conventional ASL methods ...
吳文超;江淑芬;楊舜仲;連淑華, WU, WEN-CHAU;JIANG, SHU-FEN;YANG, SHUN-CHUNG;LIEN, SHU-HUA   +1 more
core  

Smart Flexible Tactile Sensors: Recent Progress in Device Designs, Intelligent Algorithms, and Multidisciplinary Applications

Advanced Intelligent Discovery, EarlyView.
Flexible tactile sensors have considerable potential for broad application in healthcare monitoring, human–machine interfaces, and bioinspired robotics. This review explores recent progress in device design, performance optimization, and intelligent applications. It highlights how AI algorithms enhance environmental adaptability and perception accuracy
Siyuan Wang, Ming Dong, Rongrong Bao, Caofeng Pan   +3 more
wiley   +1 more source