Results 71 to 80 of about 2,325,569 (208)

Leveraging Metamaterial‐Inspired Wireless Resonator for Reliable Quantitative MRI at 1.5T: Linearity, Bias, and Repeatability Assessment

Advanced Physics Research, EarlyView.
This study designed a nonlinear‐response metamaterial‐inspired wireless resonator (MWR) and systematically evaluated the feasibility of using MWR for quantitative magnetic resonance imaging (qMRI), including T1/T2 mapping, apparent diffusion coefficient, and proton density fat fraction.
Yakui Wang, Yingyi Qi, Bing Liu, Zhonghai Chi, Yi Yi, Xinxin Li, Yibei Yu, Qian Zhao, Zhuozhao Zheng   +8 more
wiley   +1 more source

Determining of the electric field strength using high frequency broadband measurements [PDF]

Tehnika, 2017
Exposure of humans to electromagnetic fields of high frequency (above 100 kHz), i.e. radiofrequency radiation from the modern wireless systems, today inevitable is. The purpose of this paper is to highlight the importance of broadband measurements of the
Vulević Branislav D.
doaj   +1 more source

On the Impact of Mechanical Constraint on Band Structure and Photo‐Elastic Effect in Photonic Resonators

Advanced Physics Research, EarlyView.
We computationally investigate the mechanical, electronic, and optical properties of strained GeSn microdisks on silicon substrates. By combining photo‐elasticity, strain‐dependent band‐structure calculations, and optical mode analysis, we study how strain distribution, structural configuration, and temperature affect the electronic band structure and ...
Jon Schlipf, Ignatii Zaitsev, Inga Anita Fischer, Davide Spirito, Bernd Witzigmann, Costanza Lucia Manganelli   +5 more
wiley   +1 more source

A Medical Image-Based Computational Framework for Electromagnetic Field Mapping and SAR Estimation in Biological Tissues

Журнал нано- та електронної фізики
It is widely accepted from the universe that magnetic radiation has a vital role to play in the field of medical imaging, such as Magnetic Resonance Imaging (MRI), where radiofrequency electromagnetic fields emitted from the medical instruments interact ...
S. Chandrappa, Prithviraj, I.S. Rajesh, K. Madhusudhana, K.R. Sharath, A. Pai   +5 more
doaj   +1 more source

Accuracy of Large Language Model Chatbots in Retrieving MRI Safety Conditions for Medical Implants

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Retrieving MRI safety conditions for implanted devices is increasingly complex and time‐consuming. Purpose To evaluate the accuracy of internet‐enabled large language model (LLM) chatbots in retrieving implant‐specific MRI safety conditions, using manufacturer documentation as the reference standard.
Ariel Kerpel, Shir Tal, Mark Waserman, Christine Dan Lansman, Anat Berkovitch, Eyal Klang, Ronen Spierer, Shai Shrot, Emanuel Kanal, Gahl Greenberg   +9 more
wiley   +1 more source

Electromagnetic Fields

, 2017
This chapter focuses on the carcinogenic effects of exposure to electromagnetic fields, mainly power frequency and radiofrequency fields/microwaves. It describes the sources of exposure, reviews the available epidemiological studies, and considers the ...
Maria Feychting, Joachim Schüz
core   +1 more source

Emerging cancer therapies: targeting physiological networks and cellular bioelectrical differences with non-thermal systemic electromagnetic fields in the human body – a comprehensive review

Frontiers in Network Physiology
A steadily increasing number of publications support the concept of physiological networks, and how cellular bioelectrical properties drive cell proliferation and cell synchronization.
Frederico P. Costa, Bertram Wiedenmann, Eckehard Schöll, Jack Tuszynski, Jack Tuszynski, Jack Tuszynski   +5 more
doaj   +1 more source

Diffusion MRI‐Based Fetal Thermometry Using Cerebrospinal Fluid: A Translational Feasibility Study

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Noninvasive fetal temperature assessment could improve MRI safety monitoring and provide insight into fetal physiology. Diffusion MRI is a potential approach because water diffusivity in free fluids is temperature dependent. However, the applicability of adult‐derived diffusivity–temperature calibration to neonatal and fetal CSF ...
Nahla M. H. Elsaid, Nickie Andescavage, Kushal Kapse, Dorothy Bulas, Jonathan G. Murnick, Catherine Limperopoulos   +5 more
wiley   +1 more source

Assessing plant water status: Part 2 – Non‐destructive and remote sensing approaches

Journal of the Science of Food and Agriculture, EarlyView.
Abstract Precise, real time and non‐destructive assessment of plant water status is important for advancing plant physiological understanding, optimizing water usage, improving crop resilience and supporting precision agriculture in the face of increasingly variable climatic conditions.
Naila Farooq, Bo Zhang, Bastian Leander Franzisky, Tasawer Abbas, Jochen Taiber, Martin Koch, Ian C Dodd, Christoph‐Martin Geilfus   +7 more
wiley   +1 more source

A review of the ecological effects of radiofrequency electromagnetic fields (RF-EMF)

Environment International, 2013
Objective: This article presents a systematic review of published scientific studies on the potential ecological effects of radiofrequency electromagnetic fields (RF-EMF) in the range of 10 MHz to 3.6 GHz (from amplitude modulation, AM, to lower band ...
S. Cucurachi, W.L.M. Tamis, M.G. Vijver, W.J.G.M. Peijnenburg, J.F.B. Bolte, G.R. de Snoo   +5 more
doaj   +1 more source