Results 111 to 120 of about 3,048,163 (302)

Feasibility of Transrib Focused Ultrasound Thermal Ablation for Liver Tumors Using a Spherically Curved 2d Array - a Numerical Study

, 2008
The use of focused ultrasound thermal ablation to treat hepatocarcinorna and other liver tumors produces promising clinical results. However, one of the major drawbacks is the high absorption of ultrasonic energy by the rib, making partial rib removal ...
劉浩禮;張恕;陳文翔;施子卿;蕭仲凱;林文澧, LIU, HAO-LI;CHANG, HSU;CHEN, WEN-SHIANG;SHIH, TZU-CHING;HSIAO, JONG-KAI;LIN, WIN-LI   +1 more
core  

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

Advanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies, Daniel E. Driemeyer, Aaron P. Stebner   +2 more
wiley   +1 more source

Contrast-Agent-Enhanced Ultrasound Thermal Ablation

, 2008
The small thermal lesions induced when using high-intensity focused ultrasound (HIFU) to ablate tumors results in long treatment duration. In this study. the effect of using ultrasound contrast agent (UCA.
CHEN, WEN-SHIANG;LIN, WIN-LI, 陳文翔;林文澧   +1 more
core  

Functional anatomy of the subthalamic nucleus and the pathophysiology of cardinal features of Parkinson's disease unraveled by focused ultrasound ablation

The subthalamic nucleus (STN) modulates basal ganglia output and plays a fundamental role in the pathophysiology of Parkinson's disease (PD). Blockade/ablation of the STN improves motor signs in PD.
Martínez-Fernández, Raúl, Máñez-Miró, Jorge U, Pineda-Pardo, José A, Obeso, José A, Del Álamo, Marta, Rodriguez-Rojas, Rafael   +5 more
core   +1 more source

Slip Localization Intensification Mediated by Grain Boundary Sliding in a Polycrystalline Nickel‐Based Superalloy

Advanced Engineering Materials, EarlyView.
The temperature dependence of fatigue behavior in nickel‐based superalloys is investigated through high‐resolution measurements of plastic localization. While increasing temperature reduces localization and enhances fatigue performance in René 88DT, Inconel 718 exhibits a sharp degradation at intermediate temperature due to intensified slip ...
M. Calvat, D. Anjaria, I. Woo, C. Bean, D. Texier, J. C. Stinville   +5 more
wiley   +1 more source

Symmetry‐Guided Multifunctional Acoustic System Based on Mechanically Actuated Sonic Crystals

Advanced Engineering Materials, EarlyView.
This study presents the design, simulation, and experimental validation of amultifunctional acoustic metamaterial based on rotationally engineered sonic crystals.By tuning cylinder orientations, controllable band gaps and six distinct functionalities—including switching, topological insulation, beam splitting, and logic operations—areachieved ...
Yuanyan Zhao, Sriram Subramanian, Gianluca Memoli   +2 more
wiley   +1 more source

Reducing Lesion Aberration by Dual-Frequency Focused Ultrasound Ablations

, 2012
Discrepancies between hyperecho-predicted necrosed volume in ultrasound ( US) images and the actual size of a thermal lesion might cause incomplete ablation or damage normal structures during high intensity focused US ( HIFU) ablations .
CHEN, WEN-SHIANG;LIU, HAO-LI;TUNG, YAO-SHENG;WANG, JEN-CHIEH;DING, YU-HUI;JAN, CHEN-KAI, 陳文翔;劉浩禮;童耀生;王仁杰;丁語慧;詹程凱   +1 more
core   +1 more source

Molecular Dynamics Studies of Shape Memory Polymers: From Bead–Spring Models to Atomistic Simulations

Advanced Engineering Materials, EarlyView.
Coarse‐grained (left) and atomistic (right) models of the shape memory polymer ESTANE ETE 75DT3 are shown schematically. The two representations bridge molecular detail and mesoscopic description. Both models capture shape memory behavior, linking segmental mobility and conformational relaxation of anisotropic chains to macroscopic recovery, and ...
Fathollah Varnik
wiley   +1 more source

Focused Ultrasound-Mediated Hyperthermia in Vitro: An Experimental Arrangement for Treating Cells under Tissue-Mimicking Conditions.

, 2019
An experimental arrangement that allows in vitro exposure of cells to focused ultrasound-mediated hyperthermia (43°C-55°C) in a tissue-mimicking phantom with biological, acoustic and thermal properties comparable to those of human soft tissue is ...
Brüningk, SC, Rivens, I, Mouratidis, P, Ter Haar, G   +3 more
core   +1 more source

Transcranial focused ultrasound for epilepsy

Brain Stimulation, 2021
Ellen Bubrick, Phillip Jason White, Timothy Mariano, Janet Orozco, Mallika Purandare, Nathan McDannold   +5 more
doaj   +1 more source