Littérature scientifique sur le sujet « Radio-Frequency (RF) coils »
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Articles de revues sur le sujet "Radio-Frequency (RF) coils"
Truszkiewicz, Adrian, David Aebisher, Zuzanna Bober, Łukasz Ożóg et Dorota Bartusik-Aebisher. « Radio Frequency MRI coils ». European Journal of Clinical and Experimental Medicine 18, no 1 (2020) : 24–27. http://dx.doi.org/10.15584/ejcem.2020.1.5.
Texte intégralSeo, Jeung-Hoon, Yeunchul Ryu et Jun-Young Chung. « Simulation Study of Radio Frequency Safety and the Optimal Size of a Single-Channel Surface Radio Frequency Coil for Mice at 9.4 T Magnetic Resonance Imaging ». Sensors 22, no 11 (3 juin 2022) : 4274. http://dx.doi.org/10.3390/s22114274.
Texte intégralSeo, Jeung-Hoon, Young-Seung Jo, Chang-Hyun Oh et Jun-Young Chung. « A New Combination of Radio-Frequency Coil Configurations Using High-Permittivity Materials and Inductively Coupled Structures for Ultrahigh-Field Magnetic Resonance Imaging ». Sensors 22, no 22 (19 novembre 2022) : 8968. http://dx.doi.org/10.3390/s22228968.
Texte intégralAhmad, Sheikh Faisal, Young Cheol Kim, Ick Chang Choi et Hyun Deok Kim. « Recent Progress in Birdcage RF Coil Technology for MRI System ». Diagnostics 10, no 12 (27 novembre 2020) : 1017. http://dx.doi.org/10.3390/diagnostics10121017.
Texte intégralDuan, Yunsuo, Tamer S. Ibrahim, Bradley S. Peterson, Feng Liu et Alayar Kangarlu. « Assessment of a PML Boundary Condition for Simulating an MRI Radio Frequency Coil ». International Journal of Antennas and Propagation 2008 (2008) : 1–10. http://dx.doi.org/10.1155/2008/563196.
Texte intégralAebischer, H. A. « Inductance Formula for Square Spiral Inductors with Rectangular Conductor Cross Section ». Advanced Electromagnetics 8, no 4 (10 septembre 2019) : 80–88. http://dx.doi.org/10.7716/aem.v8i4.1074.
Texte intégralHong, Seon-Eui, Sukhoon Oh et Hyung-Do Choi. « RF Exposure Assessment for Various Poses of Patient Assistant in Open MRI Environment ». Applied Sciences 11, no 11 (28 mai 2021) : 4967. http://dx.doi.org/10.3390/app11114967.
Texte intégralRamsaroop, Neetu, et Oludayo O. Olugbara. « Wireless Power Transfer Using Harvested Radio Frequency Energy with Magnetic Resonance Coupling to Charge Mobile Device Batteries ». Applied Sciences 11, no 16 (21 août 2021) : 7707. http://dx.doi.org/10.3390/app11167707.
Texte intégralLu, Ming, Xiaoyang Zhang, Shuyang Chai et Xinqiang Yan. « Improving Specific Absorption Rate Efficiency and Coil Robustness of Self-Decoupled Transmit/Receive Coils by Elevating Feed and Mode Conductors ». Sensors 23, no 4 (6 février 2023) : 1800. http://dx.doi.org/10.3390/s23041800.
Texte intégralDomenick, Robert, Phillip Foreman, David M. Parish et Donald W. Pettibone. « 4882540 Magnetic resonance imaging (MRI) apparatus with quadrature radio frequency (RF) coils ». Magnetic Resonance Imaging 8, no 6 (janvier 1990) : I. http://dx.doi.org/10.1016/0730-725x(90)90025-w.
Texte intégralThèses sur le sujet "Radio-Frequency (RF) coils"
MAGGIORELLI, FRANCESCA. « Design and Development of Radio Frequency Coils for Sodium Magnetic Resonance Imaging at 7 T ». Doctoral thesis, Università di Siena, 2019. http://hdl.handle.net/11365/1066803.
Texte intégralNohava, Lena. « Concepts for Wearable Technology in MR : Lightweight Flexible Radio Frequency Coils and Optical Wireless Communication Flexible multi-turn multi-gap coaxial RF coils : design concept and implementation for Magnetic Resonance Imaging at 3 and 7 Tesla Perspectives in Wireless Radio Frequency Coil Development for Magnetic Resonance Imaging ». Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPAST069.
Texte intégralThis PhD thesis work was conducted at the BioMaps laboratory at the Université Paris-Saclay and the Center for Medical Physics and Biomedical Engineering (CMPBME) at the Medical University of Vienna.To improve diagnostic value in MRI, shorter acquisitions, more efficient patient handling and improved image quality are needed. Wearable technology with optimized hardware reduces weight, increases flexibility, and could be wireless, thereby improving sensitivity, comfort, safety, and usability.In this work, flexible self-resonant coaxial transmission line resonators were investigated. Coaxial coils with multiple turns and gaps enable size optimization depending on the target application. The design was first studied in silico. Numerous prototypes were constructed and their performance was tested on the bench and in 3 and 7 T MRI. Coaxial coils were shown to be robust against bending, have no SAR penalty and improve SNR and transmit efficiency when form-fitted.A review of wireless MR, associated hardware developments and data transmission technology is given.An optical wireless communication module for sensor data transmission was demonstrated experimentally.Wearable coaxial coils offer an attractive alternative to standard coils due to low weight and flexibility. With wireless motion sensors diagnostic value in e.g. breast, knee, or cardiac MRI could be increased
Winter, Lukas. « Detailing radio frequency controlled hyperthermia and its application in ultrahigh field magnetic resonance ». Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2014. http://dx.doi.org/10.18452/17012.
Texte intégralThe presented work details the basic feasibility of using radiofrequency (RF) fields generated by ultrahigh field (UHF) magnetic resonance (MR) (B0≥7.0T) systems for therapeutic applications such as RF hyperthermia and targeted drug delivery. A truly hybrid 8-channel transmit/receive applicator operating at the 7.0T proton MR frequency of 298MHz has been developed. Experimental verification conducted in this work demonstrated that the hybrid applicator supports targeted RF heating, MR imaging and MR thermometry (MRTh). The approach offers extra degrees of freedom (RF phase, RF amplitude) that afford deliberate changes in the location and thermal dose of targeted RF induced heating. High spatial and temporal MR temperature mapping can be achieved due to intrinsic signal-to-noise ratio (SNR) gain of UHF MR together with the enhanced parallel imaging performance inherent to the multi-channel receive architecture used. Temperature simulations in human voxel models revealed that the proposed hybrid setup is capable to deposit a controlled and localized RF induced thermal dose in the center of the human brain. After demonstrating basic feasibility, theoretical considerations and proof-of-principle experiments were conducted for RF frequencies of up to 1.44GHz to explore electrodynamic constraints for MRI and targeted RF heating applications for a frequency range larger than 298MHz. For this frequency regime a significant reduction in the effective area of energy absorption was observed when using dedicated RF antenna arrays proposed and developed in this work. Based upon this initial experience it is safe to conclude that the presented concepts generate sufficient signal strength for the circular polarized spin excitation fields with acceptable specific absorption rate (SAR) on the surface, to render in vivo MRI at B0=33.8T or in vivo electron paramagnetic resonance (EPR) at L-Band feasible.
Cassidy, Paul Joseph. « Radio-frequency coil design for magnetic resonance imaging and spectroscopy ». Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249272.
Texte intégralSerano, Peter James. « Design of a Multi-Array Radio-Frequency Coil for Interventional MRI of the Female Breast ». Digital WPI, 2009. https://digitalcommons.wpi.edu/etd-theses/747.
Texte intégralChapitres de livres sur le sujet "Radio-Frequency (RF) coils"
Lemdiasov, Rosti, Arun Venkatasubramanian et Ranga Jegadeesan. « Estimating Electric Field and SAR in Tissue in the Proximity of RF Coils ». Dans Brain and Human Body Modeling 2020, 293–307. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-45623-8_18.
Texte intégralNoetscher, Gregory, Peter Serano, Ara Nazarian et Sergey Makarov. « Computational Tool Comprising Visible Human Project® Based Anatomical Female CAD Model and Ansys HFSS/Mechanical® FEM Software for Temperature Rise Prediction Near an Orthopedic Femoral Nail Implant During a 1.5 T MRI Scan ». Dans Brain and Human Body Modelling 2021, 133–51. Cham : Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-15451-5_9.
Texte intégralActes de conférences sur le sujet "Radio-Frequency (RF) coils"
Chen, Xin, Sergey Vinogradov et Adam Cobb. « Shear Horizontal Guided Wave Corrosion Detection and Quantification in Pipes via Linear Scanning Magnetostrictive Transducers (MST) ». Dans 2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/qnde2021-75249.
Texte intégralShrivastava, Devashish, Timothy Hanson, Robert Schlentz, William Gallagher, Carl Snyder, Lance DelaBarre, Surya Prakash, Paul Iaizzo et J. Thomas Vaughan. « MR Safety and In Vivo Thermal Characterization of an RF Coil at 9.4T ». Dans ASME 2007 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2007. http://dx.doi.org/10.1115/sbc2007-176078.
Texte intégralLing, J. X., Jeffrey W. Hand et Ian R. Young. « Effect of the SAR Distribution of a Radio Frequency (RF) Coil on the Temperature Field Within a Human Leg : Numerical Studies ». Dans ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-0570.
Texte intégralHawkes, Grant, John Richardson, Dirk Gombert et John Morrison. « Heat Transfer Model for an RF Cold Crucible Induction Heated Melter ». Dans ASME 2003 Heat Transfer Summer Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ht2003-47397.
Texte intégralHawkes, Grant. « Modeling an RF Cold Crucible Induction Heated Melter With Subsidence ». Dans ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56376.
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