Results 101 to 110 of about 3,110,122 (363)

Image-Enhanced Pseudo-Thermal Ghost Imaging with Hybrid Speckle Pattern

Photonics, 2023
In this study, the influence of hybrid speckle patterns on the contrast-to-noise ratio (CNR) and resolution in pseudo-thermal ghost imaging (PGI) was examined based on the object dimensions in the macroscopic and microscopic regimes.
Tong Tian, Zhe Sun, Sukyoon Oh, Christian Spielmann   +3 more
doaj   +1 more source

Speckle noise and dynamic range in coronagraphic images [PDF]

, 2007
This paper is concerned with the theoretical properties of high contrast coronagraphic images in the context of exoplanet searches. We derive and analyze the statistical properties of the residual starlight in coronagraphic images, and describe the effect of a coronagraph on the speckle and photon noise.
arxiv   +1 more source

On subcellular distribution of the zinc finger 469 protein (ZNF469) and observed discrepancy in the localization of endogenous and overexpressed ZNF469

FEBS Open Bio, EarlyView.
ZNF469 regulates the expression of genes encoding extracellular matrix proteins. Endogenous ZNF469 is predominantly cytoplasmic, while in transfected cells, it forms aggregates reminiscent of biomolecular condensates, located mainly in the nucleus. These condensates exhibit overlapping staining with proteasomes and are also associated with the mitotic ...
Anne Elisabeth Christensen Mellgren, Ileana Cristea, Thomas Stevenson, Endy Spriet, Per Morten Knappskog, Stig Ove Bøe, Harald Kranz, Sushma N. Grellscheid, Eyvind Rødahl   +8 more
wiley   +1 more source

Enhanced dose prediction for head and neck cancer artificial intelligence‐driven radiotherapy based on transfer learning with limited training data

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Training deep learning dose prediction models for the latest cutting‐edge radiotherapy techniques, such as AI‐based nodal radiotherapy (AINRT) and Daily Adaptive AI‐based nodal radiotherapy (DA‐AINRT), is challenging due to limited data.
Hui‐Ju Wang, Austen Maniscalco, David Sher, Mu‐Han Lin, Steve Jiang, Dan Nguyen   +5 more
wiley   +1 more source

High-energy, high-resolution, fly-scan X-ray phase tomography

Scientific Reports, 2019
High energy X-ray phase contrast tomography is tremendously beneficial to the study of thick and dense materials with poor attenuation contrast. Recently, the X-ray speckle-based imaging technique has attracted widespread interest because multimodal ...
Hongchang Wang, Robert C. Atwood, Matthew James Pankhurst, Yogesh Kashyap, Biao Cai, Tunhe Zhou, Peter David Lee, Michael Drakopoulos, Kawal Sawhney   +8 more
doaj   +1 more source

Evaluation of daily residual pancreatic tumor motion for deep‐inspiration breath‐hold radiotherapy

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Breath‐hold techniques are widely used in radiation therapy to minimize respiratory‐induced tumor or organ‐at‐risk motion. However, residual motion persists, necessitating a reliable daily evaluation method. Methods At our institution, fiducial markers serve as surrogates for target localization in pancreatic cancer treatment.
Weihua Mao, Binbin Wu, Kai Ding, Sarah Han‐Oh, Amol Narang   +4 more
wiley   +1 more source

Nonsequential Speckle Reduction Method by Generating Uncorrelated Laser Subbeams With Equivalent Intensity Using a Reflective Spatial Light Modulator

IEEE Photonics Journal, 2017
Sequential speckle reduction methods demand the usage of fast modulators due to the short integration period of human eyes. Here, a nonsequential speckle reduction method by splitting one laser beam with short coherence length into uncorrelated laser ...
Zhaomin Tong, Shaohua Song, Suotang Jia, Xuyuan Chen   +3 more
doaj   +1 more source

Real-time quantification of bowel perfusion using Laparoscopic Laser Speckle Contrast Imaging (LSCI) in a porcine model

BMC Surgery, 2023
Background/purpose Real-time quantification of tissue perfusion can improve intraoperative surgical decision making. Here we demonstrate the utility of Laser Speckle Contrast Imaging as an intra-operative tool that quantifies real-time regional ...
Saloni Mehrotra, Yao Z. Liu, Chibueze A. Nwaiwu, Vasiliy E. Buharin, Roman Stolyarov, Steven D. Schwaitzberg, Matthew F. Kalady, Peter C. W. Kim   +7 more
doaj   +1 more source

A review of artificial intelligence in brachytherapy

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Artificial intelligence (AI) has the potential to revolutionize brachytherapy's clinical workflow. This review comprehensively examines the application of AI, focusing on machine learning and deep learning, in various aspects of brachytherapy.
Jingchu Chen, Richard L. J. Qiu, Tonghe Wang, Shadab Momin, Xiaofeng Yang   +4 more
wiley   +1 more source

Surface characterization of biodegradable nanocomposites by dynamic speckle analysis

Applied Surface Science Advances, 2023
Starch/kefiran/ZnO nanocomposite films may exhibit different physicochemical properties depending on the distribution of ZnO nanoparticles. As a result of UV exposure, the hydrophobicity of the nanoparticles may be modified, resulting in their dispersion
Ramin Jamali, Amin Babaei-Ghazvini, Elaheh Nazari, Majid Panahi, Iman Shahabi-Ghahfarrokhi, Ali-Reza Moradi   +5 more
doaj