Articles with "absorption rate" as a keyword



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Evaluation of a Workflow to Define Low Specific Absorption Rate MRI Protocols for Patients With Active Implantable Medical Devices

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Published in 2020 at "Journal of Magnetic Resonance Imaging"

DOI: 10.1002/jmri.27044

Abstract: MRI exams for patients with MR‐conditional active implantable medical devices (AIMDs) are contraindicated unless specific conditions are met. This limits the maximum specific absorption rate (SAR, W/kg). Currently, there is no general framework to guide… read more here.

Keywords: specific absorption; active implantable; implantable medical; absorption rate ... See more keywords
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On the computation and comparison of specific absorption rate (SAR) in a skin tissue using analytical and numerical methods

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Published in 2018 at "Microwave and Optical Technology Letters"

DOI: 10.1002/mop.31345

Abstract: Specific absorption rate (SAR) is a measure of safety and a requirement for portable radio frequency devices which are regulated mainly by the standards recommended by the Institute of Electrical and Electronics Engineers (IEEE) and… read more here.

Keywords: specific absorption; analytical numerical; rate; rate sar ... See more keywords
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Probabilistic analysis of the specific absorption rate intersubject variability safety factor in parallel transmission MRI

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Published in 2017 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.26468

Abstract: Specific absorption rate (SAR) calculations in parallel transmission are commonly performed by using electromagnetic simulations on generic models. In this study, we propose a probabilistic analysis to study the safety factor employed to account for… read more here.

Keywords: specific absorption; parallel transmission; safety factor; probabilistic analysis ... See more keywords
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Post‐processing algorithms for specific absorption rate compression

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Published in 2021 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.28909

Abstract: Compression of local specific absorption rate (SAR) matrices is essential for enabling SAR monitoring and efficient pulse calculation in parallel transmission. Improvements in compression result in lower error margin and/or lower number of virtual observation… read more here.

Keywords: specific absorption; compression; post processing; absorption rate ... See more keywords
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Evaluation of specific absorption rate and heating in children exposed to a 7T MRI head coil

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Published in 2022 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.29283

Abstract: To evaluate specific absorption rate (SAR) and temperature distributions resulting from pediatric exposure to a 7T head coil. read more here.

Keywords: specific absorption; head coil; absorption rate;
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Effect of subject‐specific head morphometry on specific absorption rate estimates in parallel‐transmit MRI at 7 T

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Published in 2023 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.29589

Abstract: To assess the accuracy of morphing an established reference electromagnetic head model to a subject‐specific morphometry for the estimation of specific absorption rate (SAR) in 7T parallel‐transmit (pTx) MRI. read more here.

Keywords: head; specific absorption; subject specific; absorption rate ... See more keywords
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Fabrication of electromagnetic waves absorbing material by ink-jet printing method

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Published in 2020 at "Journal of Materials Science: Materials in Electronics"

DOI: 10.1007/s10854-020-03279-w

Abstract: Fabrication of microstrip transmission line (MTL) in a one-step and direct process was a challenge in many of the recent research projects. In this study, for the first time, an MTL is printed on RO4003C… read more here.

Keywords: ink jet; jet; conductivity; jet printing ... See more keywords
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Influence of 1 GHz radiation at low specific absorption rate of energy deposition on plant mitotic division process

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Published in 2017 at "International Journal of Environmental Science and Technology"

DOI: 10.1007/s13762-017-1490-0

Abstract: The biological impact of microwaves exposure on biosphere is presently an important research subject. With the significant increase of communications technology use, of industrial and military activities which involve radiofrequency radiation, electromagnetic pollution became very… read more here.

Keywords: specific absorption; low specific; rate energy; mitotic division ... See more keywords
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Understanding the microstructure and absorption rate of starch-based superabsorbent polymers prepared under high starch concentration.

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Published in 2017 at "Carbohydrate polymers"

DOI: 10.1016/j.carbpol.2017.07.071

Abstract: From a microstructural view, the focus of this work was on the water absorption rate of starch-based superabsorbent polymers (starch-SAPs) prepared under high starch concentration (0.27:1w/w starch:water). The effects of starch amylose/amylopectin ratio were disclosed.… read more here.

Keywords: absorption; rate starch; starch based; absorption rate ... See more keywords
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Selection of blended absorbents for CO2 capture from flue gas: CO2 solubility, corrosion and absorption rate

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Published in 2017 at "International Journal of Greenhouse Gas Control"

DOI: 10.1016/j.ijggc.2017.04.012

Abstract: Abstract In the present study, trisodium phosphate (TSP) was used as a base solvent for CO 2 capture, and five amines, including 2-((2-aminoethyl)amino)ethanol (AEEA), methyldiethanolamine (MDEA), piperazine (PZ), potassium sarcosinate (K-Sar) and potassium lysinate (K-Lys)… read more here.

Keywords: absorption; gas; corrosion; rate ... See more keywords
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Effects of welding speed on absorption rate in partial and full penetration welding of stainless steel with high brightness and high power laser

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Published in 2017 at "Journal of Materials Processing Technology"

DOI: 10.1016/j.jmatprotec.2017.06.014

Abstract: Abstract The objectives of this paper are to measure the absorption rate based on water calorimetric method for both full and partial penetration welding and to evaluate the energy loss by spatter and metallic plume… read more here.

Keywords: absorption; full penetration; absorption rate; welding speed ... See more keywords