Results 81 to 90 of about 6,748,789 (382)

Hepatic artery thrombosis after liver transplantation: Radiologic evaluation [PDF]

, 1986
Hepatic artery thrombosis after liver transplantation is a devastating event requiring emergency retransplantation in most patients. Early clinical signs are often nonspecific.
Bowen, A, Bron, KM, Penkrot, RJ, Segel, MC, Skolnick, ML, Starzl, TE, Zajko, AB   +6 more
core   +1 more source

H-scan Subtraction Doppler Imaging: A Novel Ultrasound Small Blood Vessel Flow Characterization with Scattering and Reflection Identification

Applied Sciences, 2020
Ultrafast compound Doppler imaging (UCDI), which can be used to acquire Doppler information at very high spatial and temporal sampling rates, provides a great improvement to the characterization of the vasculature.
Yang Jiao, Derong Zhang, Yiwen Xu, Yang Chen, Zhe Wu, Yaoyao Cui   +5 more
doaj   +1 more source

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

Advanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen, Boris Rivkin, David Castellanos‐Robles, Ivan Soldatov, Lukas Beyer, Mariana Medina‐Sánchez   +5 more
wiley   +1 more source

Self‐Assembled Inorganic Nanomembrane Tubes: Rolled‐Up Piezoelectrics for Microacoustic Wave‐Based Actuators and Sensors

Advanced Materials, EarlyView.
This study demonstrates a self‐assembly process to generate free‐standing piezoelectric nanomembranes, forming ultracompact microtubular acoustic wave sensors and actuators. The miniaturized 3D piezoelectric platform reported in this work can be applied in telecommunication, energy harvesting, and acoustofluidics. Moreover, the 3D self‐assembly can add
Raphaël C. L‐M. Doineau, Christian N. Saggau, Stefan Baunack, Thomas Gemming, Yara Abdelaal, Robert Weser, Oliver G. Schmidt, Hagen Schmidt, Andreas Winkler, Mariana Medina‐Sánchez   +9 more
wiley   +1 more source

Improving the diagnosis of diastolic dysfunction of heart ventricles in newborns by tissue Doppler imaging

Zdorovʹe Rebenka, 2017
Background. Tissue Doppler imaging allows improving diagnostic capabilities of ultrasound examination of the heart. In order to improve the diagnosis of myocardial dysfunction of heart ventricles in newborns in the neonatal period, we have performed ...
М.О. Gonchar, А.D. Boichenko
doaj   +1 more source

Quantitative Assessment of Salivary Gland Parenchymal Vascularization Using Power Doppler Ultrasound and Superb Microvascular Imaging: A Potential Tool in the Diagnosis of Sjögren"s Syndrome

Balkan Medical Journal, 2020
Background: Primary Sjögren’s syndrome is a chronic inflammatory autoimmune disease. Minor salivary gland biopsy is the gold standard for the diagnosis of primary Sjögren’s syndrome.
Fethi Emre Ustabaşıoğlu, Selçuk Korkmaz, Ufuk İlgen, Serdar Solak, Osman Kula, Sezin Turan, Hakan Emmüngil   +6 more
doaj   +1 more source

Recent Advances in Collective Behaviors of Micro/Nanomotor Swarms

Advanced Materials, EarlyView.
This review describes the driving forces behind collective motion, explores the self‐organization of micro/nano swarms across zero‐dimensional (0D), one‐dimensional (1D), two‐dimensional (2D), and three‐dimensional (3D) spaces, and highlights their potential in drug delivery, environmental monitoring, and smart devices.
Siwen Sun, Bingbing Sun, Alexander B. Cook, Tania Patiño Padial, Jan C. M. van Hest   +4 more
wiley   +1 more source

Seismic probes of solar interior magnetic structure

, 2012
Sunspots are prominent manifestations of solar magnetoconvection and imaging their subsurface structure is an outstanding problem of wide physical importance.
A. G. Kosovichev, Aaron Birch, Jeroen Tromp, Laurent Gizon, Shravan Hanasoge   +4 more
core   +1 more source

Metamaterial Antennas Enhance MRI of the Eye and Occipital Brain

Advanced Materials, EarlyView.
A radiofrequency antenna platform comprising planar and bend configurations is developed, incorporating structurally integrated epsilon‐negative metamaterial unit cells to enhance MRI. These antennas enable high‐resolution in vivo human MRI of the eye, orbit, and occipital brain. Comprehensive validation, including simulations, phantom experiments, SAR,
Nandita Saha, Bilguun Nurzed, Mostafa Berangi, Andre Kuehne, Helmar Waiczies, Igor Fabian Tellez Ceja, Xiang Hu, Thomas Gladytz, Lisa Krenz, Dave Huebler, Beate Endemann, Claudia Brockmann, Ebba Beller, Oliver Stachs, Thoralf Niendorf   +14 more
wiley   +1 more source

Survey of ultrasound practice amongst podiatrists in the UK [PDF]

, 2018
Background: Ultrasound in podiatry practice encompasses musculoskeletal ultrasound imaging, vascular hand-held Doppler ultrasound and therapeutic ultrasound.
Aimie Patience, CA Speed, CJ Bowen, CJ Bowen, DL Miller, GJ Hendry, Heidi J. Siddle, HJ Siddle, J McCardle, James Coughtrey, Jean Mooney, JG Noble, Lindsey Cherry, M Young, MA d'Agostino, Martin Fox, PE Tehan, PE Tehan, R Scissons, RJ Wakefield, Z Karim   +20 more
core   +2 more sources