Breast density quantification in dual-energy mammography using virtual anthropomorphic phantoms
CONCLUSIONS: Our results in virtual phantoms indicate that the material decomposition method can produce accurate VBD measurements if the presence of a third material (skin) is considered. The results from our proof of concept showed agreement between MRI and dual-energy mammography VBD. Assessment of VBD using dual-energy images could provide complementary information in dual-energy mammography and tomosynthesis examinations.PMID:38648734 | DOI:10.1002/acm2.14360 (Source: Journal of Applied Clinical Medical Physics)
Source: Journal of Applied Clinical Medical Physics - April 22, 2024 Category: Physics Authors: Gustavo Pacheco Jorge Patricio Castillo-Lopez Yolanda Villase ñor-Navarro Mar ía-Ester Brandan Source Type: research
Site-directed mutagenesis at the Glu78 in Ec-NhaA transporter impacting ion exchange: a biophysical study
In this study, we have explored the role of Glu78 in the regulation of pH by Ec-NhaA. Although we have created various mutants, E78C has shown a considerable effect on the stoichiometry of NhaA and presented comparable phenotypes. The ITC experiment has shown the binding of ~ 5 protons in response to the transport of one lithium ion. The phenotype analysis on selective medium showed a significant expression compared to WT Ec-NhaA. This represents the importance of Glu78 in transporting the H+ across the membrane where a single mutation with Cys amino acid alters the number of H+ significantly maintaining the activity of th...
Source: European Biophysics Journal : EBJ - April 22, 2024 Category: Physics Authors: Anuradha Yadav Dinesh Kumar Manish Dwivedi Source Type: research
The effect of ionic redistributions on the microwave dielectric response of cytosol water upon glucose uptake
We present some insights into the MD response of cytosol water when exposed to Ca2+ in the absence of D-glucose. The findings from this study confirm that ion-induced alterations in bound/bulk water balance do not affect the MD response of cytosol water during glucose uptake.PMID:38647542 | DOI:10.1007/s00249-024-01708-w (Source: European Biophysics Journal : EBJ)
Source: European Biophysics Journal : EBJ - April 22, 2024 Category: Physics Authors: Cindy Galindo Leonid Livshits Lama Tarabeih Gregory Barshtein Sharon Einav Yuri Feldman Source Type: research
Fiber Bragg gratings fabricated in fibers with different geometries by femtosecond laser written through the coating and their applications in strain sensing and fiber laser
Applications of the type-I fiber Bragg gratings (FBGs) written through the coating (TTC) in strain sensing and tunable distributed Bragg ... (Source: Optics Express)
Source: Optics Express - April 22, 2024 Category: Physics Authors: Yingjie Li Tao Chen Jinhai Si Zenghui Sun Ruidong Lv Daqi Zhang Bo Gao Xun Hou Source Type: research
Sub-pixel target fine spatial feature extraction method based on aperture coding and micro-scanning imaging mechanism
The small imaging size of targets over long distances results in the loss of geometry and spatial features. Current methods are subject to ... (Source: Optics Express)
Source: Optics Express - April 22, 2024 Category: Physics Authors: Chao Zhang Ying yuan Xiaorui Wang Yang Ning Yue Li Yangyang Li Source Type: research
Relations between near-field enhancements and Purcell factors in hybrid nanostructures of plasmonic antennas and dielectric cavities
Strong near-field enhancements (NFEs) of nanophotonic structures are believed to be closely related to high Purcell factors (F_P). Here, we ... (Source: Optics Express)
Source: Optics Express - April 22, 2024 Category: Physics Authors: Xu-Tao Tang Lin Ma Yue You Xiao-Jing Du Hua Qiu Xi-Hua Guan Jun He Zhong-Jian Yang Source Type: research
Encoding independent wavefronts in a single metasurface for high-order optical vortex recognition
The orbital angular momentum (OAM) of vortex beams has great potential in optical communications due to its communication confidentiality ... (Source: Optics Express)
Source: Optics Express - April 22, 2024 Category: Physics Authors: Kai He Tigang Ning Jing Li Jingjing Zheng Li Pei Jianshuai Wang Source Type: research
Nonlinear dynamics of an interband cascade laser with optical injection
This work reports the nonlinear dynamics of a mid-infrared interband cascade laser (ICL) subject to optical injection. It is shown that the ... (Source: Optics Express)
Source: Optics Express - April 22, 2024 Category: Physics Authors: Kai-Li Lin Peng-Lei Wang Yi-Bo Peng Yu Deng Cheng Wang Source Type: research
Broadband nonlinear conversion and random quasi-phase-matching in transparent glass composite
With the development of laser technology, nonlinear optics plays a crucial role in frequency conversion. However, the generation of second ... (Source: Optics Express)
Source: Optics Express - April 22, 2024 Category: Physics Authors: Jinwei Cao Yipeng Lun Xingzhao Huang Siyun Li Rongtai Lu Meihui Zhang Xu Lu M. Sun Huakang Yu Q. Qian Source Type: research
Broadband silicon nitride integrated polarization rotators at 780 nm
Polarization management, and in particular polarization rotation, is becoming increasingly important for photonic integrated circuits ... (Source: Optics Express)
Source: Optics Express - April 22, 2024 Category: Physics Authors: Marcel W. Pruessner Kyle J. Walsh Nathan F. Tyndall Nicholas M. Fahrenkopf Alin O. Antohe Todd H. Stievater Source Type: research
LMA fibers with increased higher-order mode loss for high average power, pulsed, diffraction-limited lasers
We demonstrate new, large-mode area (LMA) gain fibers with ∼ 25 µ m mode-field diameter, and increased higher-order mode loss ... (Source: Optics Express)
Source: Optics Express - April 22, 2024 Category: Physics Authors: Yaakov Glick Jose Pincha Ishu Kansal Robert Windeler Vasiliy Lukonin Eric Monberg Erin S. Lamb Lalitkumar Bansal Jeffrey W. Nicholson Source Type: research
Equalization of RGB coupling efficiencies of metasurface waveguide coupler by adjusting imaginary part of refractive index
Optical metasurfaces offer high-efficiency and flexible wavefront shaping for near-eye displays, especially in wideband waveguide couplers ... (Source: Optics Express)
Source: Optics Express - April 22, 2024 Category: Physics Authors: Ruqing Duan Diyang Gu Chenhui Liang Lele Xia Hang Chen Yuan Chen Liu Yang Source Type: research
Photon counting Raman spectroscopy: a benchmarking study vs surface plasmon enhancement
We demonstrate a single-photon counting Raman spectroscope and benchmark it against conventional and surface-enhanced Raman spectroscopy. ... (Source: Optics Express)
Source: Optics Express - April 22, 2024 Category: Physics Authors: Yehong Li Santosh Kumar Tianhang Huo Henry Du Yu-Ping Huang Source Type: research
Human activity recognition using a single-photon direct time-of-flight sensor
Single-Photon Avalanche Diode (SPAD) direct Time-of-Flight (dToF) sensors provide depth imaging over long distances, enabling the detection ... (Source: Optics Express)
Source: Optics Express - April 22, 2024 Category: Physics Authors: Germ á n Mora-Mart í n Stirling Scholes Robert K. Henderson Jonathan Leach Istvan Gyongy Source Type: research
Noise correction in differential phase contrast for improving phase sensitivity
Differential phase contrast (DPC) imaging relies on computational analysis to extract quantitative phase information from phase gradient ... (Source: Optics Express)
Source: Optics Express - April 22, 2024 Category: Physics Authors: Hu Liu Jialin Liu Wei Zhou Baoteng Xu Zengqi Yue Daxi Xiong Xibin Yang Source Type: research
