Results 1 to 10 of about 92,210 (293)

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   +2 more sources

Seeing through the Skin: Photoacoustic Tomography of Skin Vasculature and Beyond

open access: yesJID Innovations, 2021
Skin diseases are the most common human diseases and manifest in distinct structural and functional changes to skin tissue components such as basal cells, vasculature, and pigmentation. Although biopsy is the standard practice for skin disease diagnosis,
Daiwei Li   +4 more
doaj   +1 more source

Deep-Learning-Based Algorithm for the Removal of Electromagnetic Interference Noise in Photoacoustic Endoscopic Image Processing

open access: yesSensors, 2022
Despite all the expectations for photoacoustic endoscopy (PAE), there are still several technical issues that must be resolved before the technique can be successfully translated into clinics.
Oleksandra Gulenko   +7 more
doaj   +1 more source

Deep image prior for undersampling high-speed photoacoustic microscopy

open access: yesPhotoacoustics, 2021
Photoacoustic microscopy (PAM) is an emerging imaging method combining light and sound. However, limited by the laser’s repetition rate, state-of-the-art high-speed PAM technology often sacrifices spatial sampling density (i.e., undersampling) for ...
Tri Vu   +12 more
doaj   +1 more source

Initial results of in vivo non-invasive cancer imaging in the human breast using near-infrared photoacoustics [PDF]

open access: yes, 2007
Near-infrared photoacoustic images of regions-of-interest in 4 of the 5 cases of patients with symptomatic breasts reveal higher intensity regions which we attribute to vascular distribution associated with cancer.
Engh, Frank M. van den   +6 more
core   +15 more sources

Truncated correlation photoacoustic coherence tomography: An axial resolution enhancement imaging modality

open access: yesPhotoacoustics, 2021
In this report we present a novel photoacoustic (PA) modality using pulsed chirp excitation at a fixed wavelength and spectral analysis based on frequency-domain (FD) processing.
Alireza Jangjoo   +4 more
doaj   +1 more source

Progress of photoacoustic imaging combined with targeted photoacoustic contrast agents in tumor molecular imaging

open access: yesFrontiers in Chemistry, 2022
Molecular imaging visualizes, characterizes, and measures biological processes at the molecular and cellular level. In oncology, molecular imaging is an important technology to guide integrated and precise diagnosis and treatment.
Yiwen Zheng, Mengyao Liu, Lixin Jiang
doaj   +1 more source

Mass-specific optical absorption coefficients and imaginary part of the complex refractive indices of mineral dust components measured by a multi-wavelength photoacoustic spectrometer [PDF]

open access: yesAtmospheric Measurement Techniques, 2015
Mass-specific optical absorption coefficients (MACs) and the imaginary part (κ) of the refractive indices of various mineral dust components including silicate clays (illite, kaolin and bentonite), oxides (quartz, hematite and rutile), and ...
N. Utry   +6 more
doaj   +1 more source

Aspects of Antiviral Strategies Based on Different Phototherapy Approaches: Hit by the Light

open access: yesPharmaceuticals, 2022
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) which caused the COVID-19 pandemic spreading around the world from late 2019, served as a ruthless reminder of the threat viruses pose to global public health.
Hannah Kunstek   +5 more
doaj   +1 more source

Enhanced Photothermal and Photoacoustic Performance of Graphene Oxide in NIR-II Biowindow by Chemical Reduction

open access: yesPhotonics, 2021
We report on a novel strategy for constructing graphene oxide nanomaterials with strongly enhanced photothermal (PT) and photoacoustic (PA) performance in the near-infrared (NIR)-II biowindow by chemical reduction.
Xiaoye Su   +4 more
doaj   +1 more source

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