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Parallel transmission enables control of the RF field in high-field Magnetic Resonance Imaging (MRI). However, the approach has also caused concerns about the specific absorption rate (SAR) in the patient body. The present work provides new concepts for SAR prediction. A novel approach for generating human body models is proposed, based on a water-fat separated MRI pre-scan. Furthermore, this work explores various approaches for SAR reduction.
patient safety --- radio frequency --- Magnetic Resonance Imaging (MRI) --- parallel transmission --- Specific Absorption Rate (SAR)
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This work presents three new quantitative methods for magnetic resonance imaging. A method for simultaneous mapping of B1 and T1 (MTM) is developed and validated. Electric Properties Tomography (EPT), a method for quantitative imaging of dielectric properties of tissue, is presented. Based on EPT, separate (phase-based) conductivity and (amplitude-based) permittivity measurements are introduced. Finally, a B1-based method for patient-specific local SAR measurements is presented.
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In this work, the physiological effects of time-varying magnetic fields up to 100 kHz have been investigated, namely magnetic stimulation and body warming. Simulation studies were based on numerical calculations on sophisticated cell and body models. In addition, magnetic stimulation thresholds have been determined experimentally.The project was carried out within the scope of the development of Magnetic Particle Imaging, a new imaging technology for medical diagnostics.
Biomedical Engineering --- Magnetic Stimulation --- Magnetic Particle Imaging --- Physiological Effects --- Specific Absorption Rate
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Implantable microdevices, providing accurate measurement of target analytes in animals and humans, have always been important in biological science, medical diagnostics, clinical therapy, and personal healthcare. Recently, there have been increasing unmet needs for developing high-performance implants that are small, minimally-invasive, biocompatible, long-term stable, and cost-effective. Therefore, the aim of this Special Issue is to bring together state-of-the-art research and development contributions that address key challenges and topics related to implantable microdevices. Applications of primary interest include, but are not limited to, miniaturized optical sensing and imaging tools, implantable sensors for detecting biochemical species and/or metabolites, transducers for measuring biophysical quantities (e.g., pressure and/or strain), and neural prosthetic devices.
round window stimulation --- n/a --- reactive loading --- retinal implant --- circular polarization --- mandibular advancement splint --- MedRadio --- Medical Device Radiocommunications Service (MedRadio) band --- patch antenna --- wireless charging --- drag reduce --- piezoelectric transducer --- high-density --- specific absorption rate (SAR) --- micro/nano electrode --- electrocardiogram (ECG) --- microelectrode array --- magnetic shielding --- conductive polymer --- flextensional amplifier --- biotelemetry --- lotus-like structure --- middle ear implant --- obstructive sleep apnea --- implantable BCI --- implantable packaging --- coating --- electrochemistry --- modified electrode --- slow wave effect --- shark skin --- finite element analysis --- implantable antenna --- biomedical microrobot --- magnetic devices --- hydrophobicity --- pressure sensing array --- implantable device --- wireless power transfer --- hearing loss --- system-on-chip --- antifouling
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This Special Issue is a collection of high-quality reviews and original papers from editorial board members, guest editors, and leading researchers discussing new knowledge or new cutting-edge developments in the field of engineering.
Technology: general issues --- hydrofoil optimization --- NSGA-II --- CFD --- XFOIL --- NACA 63815 --- bezier curve --- ultrasound application --- glass bottles --- fruit juice --- foam drainage --- foaming behavior --- martensitic phase transformation (MPT) --- grain misorientation (GMO) --- surface roughening (Ra) --- grain size (Dg) --- solid oxide fuel cell --- computational fluid dynamics --- sensitivity analysis --- optimization --- sand retention test --- sand control devices --- sand production --- sand replication --- SAGD --- probabilistic risk assessment --- multi-hazards --- nuclear safety --- dry-cured ham --- food-grade chemical --- coating --- mechanical performance characteristics --- chemical treatment --- ham nets --- pest management --- mechanical test --- mesh fabric --- artificial magnetic conductor (AMC) --- specific absorption rate (SAR) --- coplanar waveguide (CPW) antenna --- magneto-dielectric (MD) --- mobile phones --- wireless communications --- optical multi-band systems --- physical layer modeling --- fiber-optic communications --- commercially available components --- planar transformer --- eco-design --- environmental impact evaluation --- product efficiency --- DC-DC converter --- dual active bridge (DAB) --- life cycle optimization --- fuel optimization --- low cost HEV --- optimum hybridization --- bubble nucleation --- gas-liquid systems --- supersaturation --- step-down pressure --- Fick's second law diffusion --- characteristic time --- Q factor --- damping model --- transitional flow regime --- viscous flow regime --- MEMS oscillator --- bending modes --- zirconium phosphate --- titanium phosphate --- nanolayered phosphates --- nanofibrous titanium phosphate --- chemical synthesis --- crystal structure --- technological applications --- drug delivery --- biomedical applications --- hydrofoil optimization --- NSGA-II --- CFD --- XFOIL --- NACA 63815 --- bezier curve --- ultrasound application --- glass bottles --- fruit juice --- foam drainage --- foaming behavior --- martensitic phase transformation (MPT) --- grain misorientation (GMO) --- surface roughening (Ra) --- grain size (Dg) --- solid oxide fuel cell --- computational fluid dynamics --- sensitivity analysis --- optimization --- sand retention test --- sand control devices --- sand production --- sand replication --- SAGD --- probabilistic risk assessment --- multi-hazards --- nuclear safety --- dry-cured ham --- food-grade chemical --- coating --- mechanical performance characteristics --- chemical treatment --- ham nets --- pest management --- mechanical test --- mesh fabric --- artificial magnetic conductor (AMC) --- specific absorption rate (SAR) --- coplanar waveguide (CPW) antenna --- magneto-dielectric (MD) --- mobile phones --- wireless communications --- optical multi-band systems --- physical layer modeling --- fiber-optic communications --- commercially available components --- planar transformer --- eco-design --- environmental impact evaluation --- product efficiency --- DC-DC converter --- dual active bridge (DAB) --- life cycle optimization --- fuel optimization --- low cost HEV --- optimum hybridization --- bubble nucleation --- gas-liquid systems --- supersaturation --- step-down pressure --- Fick's second law diffusion --- characteristic time --- Q factor --- damping model --- transitional flow regime --- viscous flow regime --- MEMS oscillator --- bending modes --- zirconium phosphate --- titanium phosphate --- nanolayered phosphates --- nanofibrous titanium phosphate --- chemical synthesis --- crystal structure --- technological applications --- drug delivery --- biomedical applications
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This Special Issue is a collection of high-quality reviews and original papers from editorial board members, guest editors, and leading researchers discussing new knowledge or new cutting-edge developments in the field of engineering.
Technology: general issues --- hydrofoil optimization --- NSGA-II --- CFD --- XFOIL --- NACA 63815 --- bezier curve --- ultrasound application --- glass bottles --- fruit juice --- foam drainage --- foaming behavior --- martensitic phase transformation (MPT) --- grain misorientation (GMO) --- surface roughening (Ra) --- grain size (Dg) --- solid oxide fuel cell --- computational fluid dynamics --- sensitivity analysis --- optimization --- sand retention test --- sand control devices --- sand production --- sand replication --- SAGD --- probabilistic risk assessment --- multi-hazards --- nuclear safety --- dry-cured ham --- food-grade chemical --- coating --- mechanical performance characteristics --- chemical treatment --- ham nets --- pest management --- mechanical test --- mesh fabric --- artificial magnetic conductor (AMC) --- specific absorption rate (SAR) --- coplanar waveguide (CPW) antenna --- magneto-dielectric (MD) --- mobile phones --- wireless communications --- optical multi-band systems --- physical layer modeling --- fiber-optic communications --- commercially available components --- planar transformer --- eco-design --- environmental impact evaluation --- product efficiency --- DC-DC converter --- dual active bridge (DAB) --- life cycle optimization --- fuel optimization --- low cost HEV --- optimum hybridization --- bubble nucleation --- gas-liquid systems --- supersaturation --- step-down pressure --- Fick’s second law diffusion --- characteristic time --- Q factor --- damping model --- transitional flow regime --- viscous flow regime --- MEMS oscillator --- bending modes --- zirconium phosphate --- titanium phosphate --- nanolayered phosphates --- nanofibrous titanium phosphate --- chemical synthesis --- crystal structure --- technological applications --- drug delivery --- biomedical applications --- n/a --- Fick's second law diffusion
Choose an application
This Special Issue is a collection of high-quality reviews and original papers from editorial board members, guest editors, and leading researchers discussing new knowledge or new cutting-edge developments in the field of engineering.
hydrofoil optimization --- NSGA-II --- CFD --- XFOIL --- NACA 63815 --- bezier curve --- ultrasound application --- glass bottles --- fruit juice --- foam drainage --- foaming behavior --- martensitic phase transformation (MPT) --- grain misorientation (GMO) --- surface roughening (Ra) --- grain size (Dg) --- solid oxide fuel cell --- computational fluid dynamics --- sensitivity analysis --- optimization --- sand retention test --- sand control devices --- sand production --- sand replication --- SAGD --- probabilistic risk assessment --- multi-hazards --- nuclear safety --- dry-cured ham --- food-grade chemical --- coating --- mechanical performance characteristics --- chemical treatment --- ham nets --- pest management --- mechanical test --- mesh fabric --- artificial magnetic conductor (AMC) --- specific absorption rate (SAR) --- coplanar waveguide (CPW) antenna --- magneto-dielectric (MD) --- mobile phones --- wireless communications --- optical multi-band systems --- physical layer modeling --- fiber-optic communications --- commercially available components --- planar transformer --- eco-design --- environmental impact evaluation --- product efficiency --- DC-DC converter --- dual active bridge (DAB) --- life cycle optimization --- fuel optimization --- low cost HEV --- optimum hybridization --- bubble nucleation --- gas-liquid systems --- supersaturation --- step-down pressure --- Fick’s second law diffusion --- characteristic time --- Q factor --- damping model --- transitional flow regime --- viscous flow regime --- MEMS oscillator --- bending modes --- zirconium phosphate --- titanium phosphate --- nanolayered phosphates --- nanofibrous titanium phosphate --- chemical synthesis --- crystal structure --- technological applications --- drug delivery --- biomedical applications --- n/a --- Fick's second law diffusion
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