Results 71 to 80 of about 1,759,840 (273)

Photoacoustic microscopy of nanoparticles in cells and tissues [PDF]

open access: yes, 2013
textMolecular photoacoustic imaging is an exciting new field that promises to visualize molecular indicators of disease. The objective of this dissertation is to progress molecular imaging by providing a photoacoustic microscopy platform to better ...
Cook, Jason Ray
core  

PhotoAcoustic-guided Focused UltraSound imaging (PAFUSion) for reducing reflection artifacts in photoacoustic imaging

open access: yes, 2015
Reflection artifacts caused by acoustic reflectors is an important problem in reflection-mode photoacoustic imaging. The light absorbed by skin and superficial optical absorbers may produce high photoacoustic signals, which traverse into the tissue and ...
Steenbergen, Wiendelt   +3 more
core   +1 more source

Artificial Intelligence Meets Micro/Nanorobotics

open access: yesAdvanced Materials, EarlyView.
Artificial intelligence is transforming micro‐ and nanorobots from externally controlled, task‐specific machines into adaptive, autonomous systems. Machine learning, multimodal perception, digital twins, AI‐guided materials and geometry design enhance propulsion, localization, decision‐making, whichaccelerates clinical and environmental applications ...
Fatma M. Yurtsever   +6 more
wiley   +1 more source

Biomedical applications of full-spectrum photoacoustic imaging for wavelength-dependent endogenous molecules

open access: yesJournal of Innovative Optical Health Sciences
Photoacoustic imaging has emerged as a promising technology in the life sciences, exploiting the relatively weak scattering of sound in biological tissues to overcome the penetration limits inherent in conventional optical imaging.
Liwen Jiang   +7 more
doaj   +1 more source

A study of blood clots using photoacoustic imaging during sonothrombolysis

open access: yes, 2019
Formation of blood clots or thrombus in healthy blood vessels can lead to serious or even life-threatening complications. Sonothrombolysis is a promising tool for lysing the blood clots non-invasively using focused acoustic waves. Ultrasound (US) imaging
Pramanik, Manojit, Das, Dhiman
core   +1 more source

Photoacoustic Nanotagging for In Vivo Tracking and Optimization of Macrophage Immunotherapy in Solid Tumors

open access: yesAdvanced Materials, EarlyView.
Macrophage‐based immunotherapy for solid tumors is limited by poor tracking of cell localization and persistence. This study introduces nanotagged macrophages enabling near‐infrared photoacoustic imaging for real‐time monitoring. IFNγ‐conjugated tags enhance antitumor polarization without harming viability.
Seoyoon Song   +8 more
wiley   +1 more source

Ultrasonic Ring Array-Based Transient Triplet Differential Photoacoustic Imaging for Strong Background Removal

open access: yesFrontiers in Materials, 2021
Photoacoustic imaging (PAI) is a fast evolving imaging technology enabling in vivo imaging with high specificity and spatial resolution. However, due to strong background signals from various intrinsic chromospheres such as melanin, photoacoustic imaging
Guan Wang   +7 more
doaj   +1 more source

Cross‐Scale Hierarchical Targeted Delivery System Based on Small‐Scale Magnetic Robots

open access: yesAdvanced Robotics Research, EarlyView.
This article reviews a cross‐scale hierarchical targeted delivery system that integrates magnetic continuum robots and magnetic microrobots. By combining rapid long‐range navigation with precise microscale targeting, the system overcomes key limitations of single‐scale approaches.
Junjian Zhou   +4 more
wiley   +1 more source

Remote Photoacoustic Sensing Using Single Speckle Analysis by an Ultra-Fast Four Quadrant Photo-Detector

open access: yesSensors, 2021
The need for tissue contact makes photoacoustic imaging not applicable for special medical applications like wound imaging, endoscopy, or laser surgery.
Benjamin Lengenfelder   +8 more
doaj   +1 more source

Gold Nanoparticles for Photoacoustic Imaging [PDF]

open access: yesNanomedicine, 2015
Photoacoustic (PA) imaging is a biomedical imaging modality that provides functional information regarding the cellular and molecular signatures of tissue by using endogenous and exogenous contrast agents. There has been tremendous effort devoted to the development of PA imaging agents, and gold nanoparticles as exogenous contrast agents have great ...
Wanwan, Li, Xiaoyuan, Chen
openaire   +2 more sources

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