Results 81 to 90 of about 23,892 (284)

Handheld optical-resolution photoacoustic microscopy [PDF]

, 2017
Optical-resolution photoacoustic microscopy (OR-PAM) offers label-free in vivo imaging with high spatial resolution by acoustically detecting optical absorption contrasts via the photoacoustic effect. We developed a compact handheld OR-PAM probe for fast
Li, Lei, Lin, Li, Shi, Junhui, Wang, Lidai, Wang, Lihong V., Xu, Song, Yao, Junjie, Zhang, Pengfei, Zou, Jun   +8 more
core   +1 more source

Handheld Point-of-Care Ultrasound Probes: The New Generation of POCUS [PDF]

Journal of Cardiothoracic and Vascular Anesthesia, 2020
Recent advances in ultrasound technology have made ultrasound equipment more versatile, portable, and accessible than ever. Modern handheld, ultra-portable ultrasound devices have been developed by multiple companies and are contributing to make bedside ultrasound evaluation a practice available to all physicians.
Omar Chaudhary, Santiago Krumm, Feroze Mahmood, Robina Matyal, Aidan Sharkey, Huma Fatima, Yanick Baribeau   +6 more
openaire   +2 more sources

Upconversion Nanoparticle‐Covalent Organic Framework Core–shell Particles as Therapeutic Microrobots Trackable With Optoacoustic Imaging

Advanced Materials, EarlyView.
Upconversion nanoparticle‐covalent organic framework core–shell particles provide enhanced contrast for optoacoustic imaging by leveraging the optical absorption of upconversion luminescence within the covalent organic framework matrix. Beyond their role as contrast agents, these particles enable customizable therapeutic agent loading and release, as ...
Dong Wook Kim, Paul Wrede, Andrés Rodríguez‐Camargo, Yi Chen, Nihal Olcay Dogan, Chaim Glück, Bettina V. Lotsch, Daniel Razansky, Metin Sitti   +8 more
wiley   +1 more source

Context encoding enables machine learning-based quantitative photoacoustics

, 2018
Real-time monitoring of functional tissue parameters, such as local blood oxygenation, based on optical imaging could provide groundbreaking advances in the diagnosis and interventional therapy of various diseases.
Gröhl, Janek, Kirchner, Thomas, Maier-Hein, Lena   +2 more
core   +1 more source

Dynamic Microfluidic Synthesis of Zinc Oxide Nanowires: Impact of Channel Architecture on Growth Homogeneity and Uniformity

Advanced Materials Interfaces, Volume 12, Issue 9, May 5, 2025.
In situ synthesis of nanomaterials within microfluidic reactors in dynamic mode boosts the growth rate. Notably, microfluidic reactors with optimized tree‐branched microchannel networks enable outstanding homogeneity of 99% and excellent nanowires uniformity.
Mazen Erfan, Martine Gnambodoe‐Capochichi, Yasser M. Sabry, Diaa Khalil, Yamin Leprince‐Wang, Tarik Bourouina   +5 more
wiley   +1 more source

Automatic Diagnosis of Carotid Atherosclerosis Using a Portable Freehand 3D Ultrasound Imaging System [PDF]

arXiv, 2023
The objective of this study is to develop a deep-learning based detection and diagnosis technique for carotid atherosclerosis using a portable freehand 3D ultrasound (US) imaging system. A total of 127 3D carotid artery scans were acquired using a portable 3D US system which consisted of a handheld US scanner and an electromagnetic tracking system. A U-
arxiv  

Ligand‐Driven Annular‐Epitaxial Growth of CuS‐Au Heterostructures as Trinity Plasmonic Nanozyme for Multimode Diagnosis of Pathogenic Bacteria

Advanced Science, EarlyView.
CuS‐Au heterostructures were synthesized via ligand‐regulated annular‐epitaxial growth strategy, biotin‐Concanavalin A (ConA) was modified on the CuS‐Au heterostructures for universal bacterial‐labelling, assembled with strip, Streptococcus pneumoniae and Klebsiella pneumoniae can be sensitively recognized by SERS/colorimetric/temperature three‐mode ...
Xiaorui Lin, Pengyou Zhou, Miao An, Chenyi Zhu, Yuanfeng Pang, Rui Xiao   +5 more
wiley   +1 more source

Estimating the accuracy of optic nerve sheath diameter measurement using a pocket-sized, handheld ultrasound on a simulation model

Critical Ultrasound Journal, 2016
Background Ultrasound measurement of optic nerve sheath diameter (ONSD) appears to be a promising, rapid, non-invasive bedside tool for identification of elevated intra-cranial pressure.
Garrett G. R. J. Johnson, Frederick A. Zeiler, Bertram Unger, Gregory Hansen, Dimitrios Karakitsos, Lawrence M. Gillman   +5 more
doaj   +1 more source

AI Enabled High Frame Rate Portable Ultrasound Imaging Pipeline: Prototype Implementation with GPU Acceleration [PDF]

arXiv, 2023
In this paper, we present a GPU-accelerated prototype implementation of a portable ultrasound imaging pipeline on an Nvidia CLARA AGX development kit. The raw data is acquired with nonsteered plane wave transmit using a programmable handheld open platform that supports 128-channel transmit and 64-channel receive. The received signals are transferred to
arxiv  

Tailored Fluorescent Metal–Organic Frameworks Hybrid Membrane Sensor Arrays: Simultaneous and Selective Quantification of Multiple Antibiotics

Advanced Science, EarlyView.
A filterable paper‐based fluorescent metal–organic frameworks (MOFs) sensor array is developed for one‐to‐one recognition and simultaneous quantification of multiple antibiotics. Three representative MOFs are strategically designed to exhibit exceptional affinity and specificity for the target antibiotic.
Tongtong Ma, Qiao Huang, Lei Yuan, Shugang Yan, Yalin Mo, Yibin Ying, Yingchun Fu, Jinming Pan   +7 more
wiley   +1 more source