Results 31 to 40 of about 70,471 (264)

Efficacy of color Doppler ultrasound and contrast-enhanced ultrasound in identifying vascular invasion in pancreatic ductal adenocarcinoma

Insights into Imaging
Objectives To compare color Doppler ultrasound and contrast-enhanced ultrasound (CEUS) in evaluating vascular invasion in pancreatic ductal adenocarcinoma (PDAC).
Wan-Ying Jia, Yang Gui, Xue-Qi Chen, Li Tan, Jing Zhang, Meng-Su Xiao, Xiao-Yan Chang, Meng-Hua Dai, Jun-Chao Guo, Yue-Juan Cheng, Xiang Wang, Jia-Hui Zhang, Xiao-Qian Zhang, Ke Lv   +13 more
doaj   +1 more source

Una mirada a la seguridad del ultrasonido en ecotomografía obstétrica

Revista Chilena de Obstetricia y Ginecología, 2022
Los índices térmico y mecánico son estimadores de riesgo fetal en una ecografía y se deben controlar sus valores minimizando la exposición. Comparamos los valores de los índices térmico y mecánico obtenidos en exámenes ecográficos obstétricos de ...
Jorge Jeldes-Maturana, Rodrigo Ramírez-Peña, Patricia Zúñiga-Clavijo, Sebastián Ogalde-Baeza, José S. Miño-Cornejo, Mauricio Fuentes-Alburquenque, Miriam Pastén-Avalos, Mauricio Canals-Lambarri   +7 more
doaj   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

To Doppler or Not to Doppler: From Doppler Ultrasound to Color Doppler to Doppler in 3D and Beyond

Donald School Journal of Ultrasound in Obstetrics and Gynecology, 2011
ABSTRACT This review aims to provide the reader with an update on the present and potential clinical applications in Doppler ultrasound in perinatal medicine. Umbilical artery Doppler plays an important role in the management of intrauterine growth restriction (IUGR) and pre-eclampsia and aids in twin-to-twin transfusion syndrome management while ...
Ivica Zalud, William Goh
openaire   +1 more source

Two‐Photon Grayscale Lithography (2GL) of High Mechanical and Optical Quality 3D Silica Glass Microstructures

Advanced Functional Materials, EarlyView.
Two‐photon grayscale lithography (2GL) enables high‐speed and precise 3D printing of thermolyzed silica glass microstructures with optical‐grade surface quality, high quality factors, and mechanical strength utilizing a custom‐made pre‐glass resist based on polyhedral oligomeric silsesquioxane (POSS) modified with a high‐sensitivity Norrish type II ...
Jonathan L. G. Schneider, Jiajie Liang, Paul Somers, Martin Wegener, Jens Bauer   +4 more
wiley   +1 more source

Guidelines for ultrasound examination in ophthalmology. Part III: Color Doppler ultrasonography

Journal of Ultrasonography, 2019
The aim of this article was to present the possibilities of use and application of color-coded Doppler ultrasonography in the diagnosis of various diseases of the eyeball and orbit which result from vascular disorders. Color-coded Doppler ultrasonography
Monika Modrzejewska
doaj   +1 more source

Design and Modeling of a High‐Displacement, Skin‐Integrated Flexible Electromagnetic Actuator for Haptic Interfaces in Virtual Reality

Advanced Robotics Research, EarlyView.
A flexible, skin‐integrated electromagnetic actuator is developed for wearable virtual/augmented reality (VR/AR) haptic systems. A tunable design model enables control over displacement and resonance frequency. The system is validated through a custom VR application with a 6 × 4 actuator array, demonstrating real‐time, spatially targeted tactile ...
Naji Tarabay, Alexandra Zhang Jiang, Ziteng Liu, Rachel Villamor, Derek Cha, Ananya Renuka Balakrishna, Tianshu Liu, Priyanshu Agarwal, Rainer Dömer, Camilo Velez   +9 more
wiley   +1 more source

ALK1 controls hepatic vessel formation, angiodiversity, and angiocrine functions in hereditary hemorrhagic telangiectasia of the liver

Hepatology, EarlyView., 2022
Hepatic endothelial Alk1 signaling protects from development of vascular malformations while maintaining organ‐specific endothelial differentiation and angiocrine portmanteau of the names Wingless and Int‐1 signaling. Abstract Background and Aims In hereditary hemorrhagic telangiectasia (HHT), severe liver vascular malformations are associated with ...
Christian David Schmid, Victor Olsavszky, Manuel Reinhart, Vanessa Weyer, Felix A. Trogisch, Carsten Sticht, Manuel Winkler, Sina W. Kürschner, Johannes Hoffmann, Roxana Ola, Theresa Staniczek, Joerg Heineke, Beate K. Straub, Jens Mittler, Kai Schledzewski, Peter ten Dijke, Karsten Richter, Steven Dooley, Cyrill Géraud, Sergij Goerdt, Philipp‐Sebastian Koch   +20 more
wiley   +1 more source

COMPARATION OF DIAGNOSTIC VALUE B-MODE ULTRASOUND WITH COLOR DOPPLER TWINKLING ARTIFACT FOR DETECTING RESIDUAL STONE AFTER PCNL

Jurnal Urologi Indonesia, 2017
Objective: To compare the accuracy of B-Mode US and color Doppler twinkling artifact for detecting residual stone after Percutaneous Nephrolithotomy (PCNL) with Non-contrast CT (NCCT) as the standard diagnostic.
Sonny Andikha Wardhana, Fikri Rizaldi, Tarmono Djojodimedjo, Sunaryo Hardjowijoto   +3 more
doaj   +1 more source

Modulation of miR‐23b Wnt/β‐catenin Axis Strengthens Endothelial Barrier Properties

Advanced Science, EarlyView.
Early blood‐brain barrier (BBB) disruption contributes to stroke and CNS disease pathology. miR‐23b was identified as a regulator of BBB integrity in brain endothelial cells. Inhibition of miR‐23b enhanced barrier‐associated properties, promoted repair‐related signaling, and reduced BBB leakage in experimental stroke models, supporting further ...
Victor Anthony Martinez, Rose E. Presby, Sara Nakanishi, Pallavi Gaur, Ugur Akcan, Johannes Daugaard Krog, Iben Daugaard Krog, Lipi Das, David S. Johnson, Danny Jamoul, Douglas Jury, Brian Lawson, Jacob Körbelin, Lewis M. Brown, Vilas Menon, Dritan Agalliu, Irene Munk Pedersen   +16 more
wiley   +1 more source