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Answer to the Letter to the Editor of S. Pan, et al. concerning "The test-retest reliability of frontal, sagittal, and transverse spinal measurements during three standing arm positions in adolescents with idiopathic scoliosis measured using ultrasound imaging" by B.J. Fehr, et al. (Eur Spine J [2024]: doi: 10.1007/s00586-024-08576-0).
Eur Spine J
January 2025
Department of Physical Therapy, Faculty of Rehabilitation Medicine, University of Albert, 2-50 Corbett Hal, Edmonton, AB, T6G 2G4, Canada.
An ultrasensitive angular interrogation metasurface sensor based on the TE mode surface lattice resonance.
Microsyst Nanoeng
January 2025
National Key Laboratory of Advanced Micro and Nano Manufacture Technology, Beijing, 100871, PR China.
The localized surface plasmon resonance metasurface is a research hotspot in the sensing field since it can enhance the light-matter interaction in the nanoscale, but the wavelength sensitivity is far from comparable with that of prism-coupled surface plasmon polariton (SPP). Herein, we propose and demonstrate an ultrasensitive angular interrogation sensor based on the transverse electric mode surface lattice resonance (SLR) mechanism in an all-metal metasurface. In theory, we derive the sensitivity function in detail and emphasize the refraction effect at the air-solution interface, which influences the SLR position and improves the sensitivity performance greatly in the wide-angle.
View Article and Find Full Text PDFMachine Learning to Detect Cervical Spine Fractures Missed by Radiologists on CT: Analysis Using Seven Award-Winning Models from the RSNA 2022 Cervical Spine Fracture AI Challenge.
AJR Am J Roentgenol
January 2025
Department of Medical Imaging, Faculty of Medicine, University of Toronto, Toronto, ON, Canada.
Available data on radiologists' missed cervical spine fractures are based primarily on studies using human reviewers to identify errors on re-evaluation; such studies do not capture the full extent of missed fractures. To use machine-learning (ML) models to identify cervical spine fractures on CT missed by interpreting radiologists, characterize the nature of these fractures, and assess their clinical significance. This retrospective study included all cervical spine CT examinations performed in adult patients in the emergency department between January 1, 2018 and December 31, 2022.
View Article and Find Full Text PDFHigh-Performance CP Magneto-Electric Dipole Antenna Fed by Printed Ridge Gap Waveguide at Millimeter-Wave.
Sensors (Basel)
December 2024
Centre-Energie Materiaux et Telecommunications, Institut National de la Recherche Scientifique, Montreal, QC H5A 1K6, Canada.
This paper presents a high-performance circularly polarized (CP) magneto-electric (ME) dipole antenna optimized for wideband millimeter-wave (mm-wave) frequencies, specifically targeting advancements in 5G and 6G technologies. The CP antenna is excited through a transverse slot in a printed ridge gap waveguide (PRGW), which operates in a quasi-transverse electromagnetic (Q-TEM) mode. Fabricated on Rogers RT 3003 substrate, selected for its low-loss and cost-effective properties at high frequencies, the design significantly enhances both impedance and axial ratio (AR) bandwidths.
View Article and Find Full Text PDFA novel dual filtering mechanism for laser safety eyewear with polycarbonate lens coated by zirconium dioxide and silicon dioxide.
Lasers Med Sci
January 2025
Department of Physics, Shabestar Branch, Islamic Azad University, Shabestar, Iran.
In laser safety eyewear, due to the lack of complete blocking of ultraviolet and infrared rays, we proposed a structure based on one-dimensional multilayer composed of several layers of silicon dioxide and zirconium dioxide materials alternately behind polycarbonate lens. It is find out that the acceptance angle range to the photonic crystal is 0 to 39°. This incident angle range corresponds to the band gap of the photonic crystal.
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