Results 1 to 10 of about 13,780,098 (199)

MRSaiFE: An AI-Based Approach Towards the Real-Time Prediction of Specific Absorption Rate [PDF]

open access: yesIEEE Access, 2021
The purpose of this study is to investigate feasibility of estimating the specific absorption rate (SAR) in MRI in real time. To this goal, SAR maps are predicted from 3T- and 7T-simulated magnetic resonance (MR) images in 10 realistic human body models ...
Sayim Gokyar   +4 more
doaj   +2 more sources

Reduction of Specific Absorption Rate: A Review Article [PDF]

open access: yesThe Egyptian International Journal of Engineering Sciences and Technology, 2022
This paper presents a generic review of various methods performed to acquire a low SAR for antennas used in different applications. While the SAR is minimized, various parameters such as bandwidth, gain, directivity, efficiency, and antenna size are also
Alaa Hediya, Walid El-Deeb, Ahmed Attiya
doaj   +2 more sources

Specific absorption rate of randomly oriented magnetic nanoparticles in a static magnetic field [PDF]

open access: yesBeilstein Journal of Nanotechnology, 2023
Numerical simulations using the stochastic Landau–Lifshitz equation are performed to study magnetization dynamics of dilute assemblies of iron oxide nanoparticles exposed to an alternating (ac) magnetic field with an amplitude Hac = 200 Oe and a ...
Ruslan A. Rytov, Nikolai A. Usov
doaj   +2 more sources

A self-matched leaky-wave antenna for ultrahigh-field magnetic resonance imaging with low specific absorption rate [PDF]

open access: yesNature Communications, 2021
Magnetic resonance imaging of the prostate is challenging due to the trade-off between a high magnetic field and safety concern of local specific absorption rate. Here, the authors demonstrate that a leaky-wave antenna design can reduce local heating due
G. Solomakha   +6 more
doaj   +2 more sources

Automatic specific absorption rate (SAR) prediction for hyperthermia treatment planning using deep learning method [PDF]

open access: yesInternational Journal of Hyperthermia
Objective To develop a deep learning method for fast and accurate prediction of Specific Absorption Rate (SAR) distributions in the human head to support real-time hyperthermia treatment planning (HTP) of brain cancer patients.Approach We propose an ...
Yankun Lang, Dario B. Rodrigues, Lei Ren
doaj   +2 more sources

Specific Absorption Rate Dependency on the Co2+ Distribution and Magnetic Properties in CoxMn1-xFe2O4 Nanoparticles [PDF]

open access: yesNanomaterials, 2021
Mixed ferrite nanoparticles with compositions CoxMn1-xFe2O4 (x = 0, 0.2, 0.4, 0.6, 0.8, and 1.0) were synthesized by a simple chemical co-precipitation method.
Venkatesha Narayanaswamy   +9 more
doaj   +2 more sources

Design of miniaturized double-negative material for specific absorption rate reduction in human head. [PDF]

open access: yesPLoS ONE, 2014
In this study, a double-negative triangular metamaterial (TMM) structure, which exhibits a resounding electric response at microwave frequency, was developed by etching two concentric triangular rings of conducting materials.
Mohammad Rashed Iqbal Faruque   +1 more
doaj   +2 more sources

Evaluation of specific absorption rate as a dosimetric quantity for electromagnetic fields bioeffects. [PDF]

open access: yesPLoS ONE, 2013
PURPOSE: To evaluate SAR as a dosimetric quantity for EMF bioeffects, and identify ways for increasing the precision in EMF dosimetry and bioactivity assessment. METHODS: We discuss the interaction of man-made electromagnetic waves with biological matter
Dimitris J Panagopoulos   +2 more
doaj   +2 more sources

Ultrasonic specific absorption rate in nanoparticle-mediated moderate hyperthermia [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2021
Magnetic nanoparticle’s different applications in nanomedicine, due to their unique physical properties and biocompatibility, were intensively investigated.
Barbara Gambin, Eleonora Kruglenko
doaj   +1 more source

Specific Absorption Rate (SAR) Simulated for Square Patch Antenna of Head Tissues [PDF]

open access: yesEngineering and Technology Journal, 2018
Square patch antennas (SPA) are widely used today is in wireless communication systems, mainly with a popular frequency of 2.4 GHz. Wireless devices is the main source of electromagnetic (EM) radiation, which penetrates the tissues of human and causes ...
Ahmed Ahmed
doaj   +1 more source

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