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Portable Nuclear Magnetic Resonance Spectrometer with Birdcage Coil for Non-destructive Testing and Analysis of Metallic Materials
Published 2024-12-01“…In this article, a portable NMR spectrometer has been designed, simulated and implemented from a small birdcage coil for the frequency range of 1 MHz to 10 MHz according to the static magnetic field. …”
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A Modified Quadrature Birdcage Coil Incorporated With a Curved Feature for <italic>In Ovo</italic> MR Imaging
Published 2024-01-01Subjects: Get full text
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Low-Field Magnetic Resonance Imaging: A Full-Wave Simulation of Radiofrequency Birdcage Coils for Musculoskeletal Limb Imaging
Published 2025-03-01“…<b>Results:</b> The accuracy of the results was verified by data acquired from two lowpass birdcage prototypes designed for musculoskeletal experiments on a 0.18 T open MR clinical scanner. …”
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Comparative Analysis of the Effect of Needle-Based Spinneret/Collector Combinations on Morphological Properties of PVA Electrospun Mats
Published 2025-01-01“…Nanosized but flattened electrospun fibers are handled by multineedle/disc collector and two distinct compositions are incorporated by deposition of nanofibers on birdcage collector.…”
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Assessment of a PML Boundary Condition for Simulating an MRI Radio Frequency Coil
Published 2008-01-01“…We first experimentally constructed a high-pass birdcage head coil, measured its resonance pattern, and used it to acquire proton (1H) phantom MRI images. …”
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Magnetic Induction Phase Difference for Cerebral Hemorrhage Detection
Published 2024-12-01“…The sensitivities in detecting solutions with different conductivities were 1.84, 1.39, and 1.22 times higher than those for a low-pass birdcage coil, planar gradiometer, and Bx-sensor, respectively. …”
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Engineering the development of democratic citizenship education curriculum in the global era: A few perspectives from theoretical frameworks
Published 2023-04-01“…There are at least six theoretical frameworks, namely the Birdcage Theory, Crystal Theory, Tree Theory, DNA Theory, Mushroom Theory, and Amoeba Theory. …”
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Mechatronic system’s permeable materials with controlled porosity
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John McGahern’s Photographic Eye
Published 2014-06-01“…That he chose to focus on a poor cottage, a barefoot woman in a doorway, two girls in their Sunday finery, is significant, but more telling of the eye which he brought to his craft is the angle of the house, the broom next to the doorway, the placing of the birdcage and wheel.” My starting point is the quote above, which evokes the techniques and concerns that characterize McGahern’s own work as a novelist. …”
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Visible Human Project® female surface based computational phantom (Nelly) for radio-frequency safety evaluation in MRI coils.
Published 2021-01-01“…Given the same or similar coil settings, the computational human model generates meaningful results for SAR, B1 field, and temperature rise when used in conjunction with the 1.5 T birdcage MRI coils or at higher frequencies corresponding to 3 T MRI. …”
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Novel Design of Dual Resonant RF Microstrip Surface Coil for High-Field MR Applications
Published 2024-01-01“…Due to numerous research efforts in RF coil development, birdcage and surface coils are the most commonly used in clinical applications to enhance medical imaging quality. …”
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Open-transmit and flexible receiver array for high resolution ultrahigh-field fMRI of the human sensorimotor cortex
Published 2025-03-01“…Leveraging the increased signal-to-noise ratio (SNR) and spatial resolution of ultrahigh field MRI, we address the technical challenges inherent in fMRI coil design. The open-birdcage transmit coil enhances patient comfort and enables visual task implementation, demonstrating superior performance in transmit efficiency and specific absorption rate distribution compared to conventional coils. …”
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Optimized radiofrequency shimming using low-heating B1+-mapping in the presence of deep brain stimulation implants: Proof of concept.
Published 2024-01-01“…Simulation and experimental outcomes were compared with those obtained using an existing simulation-driven workflow for obtaining safe mode RF shim settings, and for quadrature RF transmission using a circularly polarized (CP) birdcage head coil. Experimental results showed that although both existing and proposed safe-mode workflows effectively suppressed localized heating at the wire tip in comparison to the CP coil results, the proposed workflow produced much smaller temperature elevations and much improved signal uniformity. …”
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Evaluation of the impact of heat stress at flowering on spikelet fertility and grain quality in barley
Published 2024-12-01“…Delayed sowing in target field environments as well as combined birdcage and heat chamber experiments were conducted in Western Australia for two consecutive years. …”
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Evaluation of Metabolic Characteristics of Brain Tumours Utilising 31-Phosphorus MR Spectroscopy in 3T MRI: A Cross-sectional Study
Published 2025-01-01“…The study included 32 patients diagnosed with brain tumours based on conventional MR imaging, followed by histopathology, and 10 normal healthy volunteers who underwent 31-Phosphorus MR spectroscopy using a customised birdcage 31-P dual-tuned head coil on a Siemens 3-Tesla MRI scanner (Rapid Biomedical, Wurzburg, Germany). …”
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