Results 41 to 50 of about 61,907 (317)

NIR-II Nanoprobes: A Review of Components-Based Approaches to Next-Generation Bioimaging Probes

open access: yesBioengineering, 2023
Fluorescence and photoacoustic imaging techniques offer valuable insights into cell- and tissue-level processes. However, these optical imaging modalities are limited by scattering and absorption in tissue, resulting in the low-depth penetration of ...
Bryce Dunn   +5 more
doaj   +1 more source

Methodology and applications of acousto-electric analogy in photoacoustic cell design for trace gas analysis

open access: yesPhotoacoustics, 2023
Photoacoustic cells play an important role in photoacoustic trace gas analysis, as they can amplify the photoacoustic signal and improve detection limit.
Xiaoli Liu, Hongpeng Wu, Lei Dong
doaj   +1 more source

Biomedical photoacoustics in China

open access: yesPhotoacoustics, 2013
During the last decade, along with its explosive growth globally, biomedical photoacoustics has become a rapidly growing research field in China as well. In particular, photoacoustic tomography (PAT), capable of imaging intact biological tissue in vivo at great depths, has generated intense interest among Chinese researchers.
Meng, Jing, Song, Liang
openaire   +2 more sources

Non-Invasive Monitoring of Human Health by Photoacoustic Spectroscopy

open access: yesSensors, 2022
For certain diseases, the continuous long-term monitoring of the physiological condition is crucial. Therefore, non-invasive monitoring methods have attracted widespread attention in health care.
Yongyong Jin   +4 more
doaj   +1 more source

Tutorial on photoacoustic tomography [PDF]

open access: yesJournal of Biomedical Optics, 2016
Photoacoustic tomography (PAT) has become one of the fastest growing fields in biomedical optics. Unlike pure optical imaging, such as confocal microscopy and two-photon microscopy, PAT employs acoustic detection to image optical absorption contrast with high-resolution deep into scattering tissue.
Zhou, Yong, Yao, Junjie, Wang, Lihong V.
openaire   +3 more sources

An Automatic Unmixing Approach to Detect Tissue Chromophores from Multispectral Photoacoustic Imaging

open access: yesSensors, 2020
Multispectral photoacoustic imaging has been widely explored as an emerging tool to visualize and quantify tissue chromophores noninvasively. This modality can capture the spectral absorption signature of prominent tissue chromophores, such as oxygenated,
Valeria Grasso   +2 more
doaj   +1 more source

Photoacoustic nanoprobe for β-galactosidase activity detection and imaging in vivo [PDF]

open access: yesJournal of Innovative Optical Health Sciences, 2019
Detection and visualization of β-galactosidase (β-gal) is essential to reflect its physiological and pathological effects on human health and disease, but it is still challenging to precisely track β-gal in vivo owing to the limitation of current ...
Qin Zeng, Yunxia Wu, Tao Zhang
doaj   +1 more source

Excessive alcohol consumption induces methane production in humans and rats

open access: yesScientific Reports, 2017
Various studies have established the possibility of non-bacterial methane (CH4) generation in oxido-reductive stress conditions in plants and animals.
E. Tuboly   +12 more
doaj   +1 more source

Photoacoustic angiography of the breast [PDF]

open access: yesMedical Physics, 2010
Purpose:The authors report a noninvasive technique and instrumentation for visualizing vasculature in the breast in three dimensions without using either ionizing radiation or exogenous contrast agents, such as iodine or gadolinium. Vasculature is visualized by virtue of its high hemoglobin content compared to surrounding breast parenchyma.
Robert A, Kruger   +4 more
openaire   +2 more sources

Eavesdrop at Clinical Depths: Deep Photoacoustic Imaging with Internal Light Illumination

open access: yesAdvanced Devices & Instrumentation
Photoacoustic imaging (PAI) is a hybrid image modality that combines optical absorption contrast and acoustic detection of light-induced ultrasound waves.
Joseph J. Yang, Soon-Woo Cho, Junjie Yao
doaj   +1 more source

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