Results 1 to 10 of about 18,687 (226)

Biomedical photoacoustic imaging [PDF]

open access: yesInterface Focus, 2011
Abstract Photoacoustic (PA) imaging, also called optoacoustic imaging, is a new biomedical imaging modality based on the use of laser-generated ultrasound that has emerged over the last decade. It is a hybrid modality, combining the high-contrast and spectroscopic-based specificity of optical imaging with the high spatial resolution ...
Paul Beard
exaly   +3 more sources

Photoacoustic-guided focused ultrasound (PAFUSion) for identifying reflection artifacts in photoacoustic imaging

open access: yesPhotoacoustics, 2015
Influence of acoustic inhomogeneities and resulting reflection artifacts is an important problem in reflection-mode photoacoustic imaging. Absorption of light by skin and superficial optical absorbers will generate photoacoustic transients, which ...
Mithun Kuniyil Ajith Singh   +1 more
exaly   +3 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

Photoacoustic Imaging [PDF]

open access: yesCold Spring Harbor Protocols, 2011
INTRODUCTIONPhotoacoustic imaging, which is based on the photoacoustic effect, has developed extensively over the last decade. Possessing many attractive characteristics such as the use of nonionizing electromagnetic waves, good resolution and contrast, portable instrumention, and the ability to partially quantitate the signal, photoacoustic techniques
Yin, Zhang, Hao, Hong, Weibo, Cai
openaire   +2 more sources

Photoacoustic Cystography [PDF]

open access: yesJournal of Visualized Experiments, 2013
Conventional pediatric cystography, which is based on diagnostic X-ray using a radio-opaque dye, suffers from the use of harmful ionizing radiation. The risk of bladder cancers in children due to radiation exposure is more significant than many other cancers.
Jeon, M, Kim, J, Kim, C
openaire   +3 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

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