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Wavelength-tunable infrared metasurfaces with chiral bound states in the continuum.
Sci Rep
January 2025
School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China.
In recent years, research on chiral bound states in the continuum (BIC) has surged, leading to the development of various chiral metasurfaces with narrow bandwidths by breaking of in-plane and out-of-plane symmetries. However, the ability to dynamically tune the working band remains relatively unexplored, which is valuable for chiral sensing applications. Optical phase-change materials, with tunable dielectric constants and switchable properties during phase transition, offer the potential for dynamic control of optical metasurfaces.
View Article and Find Full Text PDFEvaluation of Band Selection for Spectrum-Aided Visual Enhancer (SAVE) for Esophageal Cancer Detection.
J Cancer
January 2025
Department of Mechanical Engineering, National Chung Cheng University, Chia-Yi 62102, Taiwan.
Band selection is a common approach to reduce the data dimensionality of hyperspectral imagery. It extracts several bands of importance in some sense by taking advantage of high spectral correlation. In medical imaging, narrow-band imaging (NBI) is an imaging technique for endoscopic diagnostic medical tests, where light of specific blue and green wavelengths is used to enhance the detail of certain aspects of the surface of the mucosa.
View Article and Find Full Text PDFAdvanced Neuroimaging and Clinical Findings in a Case of Linear Scleroderma En Coup De Sabre Presenting With Seizures.
Cureus
November 2024
Radiology, Grupo CT Scanner, Mexico City, MEX.
Scleroderma is a rare connective tissue disease categorized as systemic or localized. Linear subtype of localized scleroderma usually manifests as a cutaneous linear scar-like lesion most commonly on the scalp. It may present with neurologic, ophthalmologic, and rheumatologic symptoms.
View Article and Find Full Text PDFImproved visibility of palisade vessels within Barrett's esophagus using red dichromatic imaging: a retrospective cross-sectional study in Japan.
Clin Endosc
November 2024
Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Hyogo, Japan.
Background/aims: Visualization of palisade vessels (PVs) in Barrett's esophagus is crucial for proper assessment. This study aimed to determine whether red dichromatic imaging (RDI) improves PV visibility compared with white-light imaging (WLI) and narrow-band imaging (NBI).
Methods: Five expert and trainee endoscopists evaluated the PV visibility in Barrett's esophagus using WLI, NBI, and RDI on 66 images from 22 patients.
Recent advances of photodiagnosis and treatment for head and neck squamous cell carcinoma.
Neoplasia
December 2024
Otolaryngology & Head and Neck Center, Cancer Center, Department of Head and Neck Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou 310014, Zhejiang, China; Zhejiang Provincial Clinical Research Center for Head & Neck Cancer, Hangzhou 310014, China; Zhejiang Key Laboratory of Precision Medicine Research on Head & Neck Cancer, Hangzhou 310014, China. Electronic address:
Head and neck squamous cell carcinoma (HNSCC) are the most common type of head and neck tumor that severely threatens human health due to its highly aggressive nature and susceptibility to distant metastasis. The diagnosis of HNSCC currently relies on biopsy and histopathological examination of suspicious lesions. However, the early mucosal changes are subtle and difficult to detect by conventional oral examination.
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