Results 31 to 40 of about 989,563 (206)

Photoacoustic Tomography (PAT) [PDF]

open access: yes, 2021
Photoacoustic (or optoacoustic) imaging, including photoacoustic tomography (PAT) and photoacoustic microscopy (PAM), is an emerging imaging modality with great clinical potential. PAI’s deep tissue penetration and fine spatial resolution also hold great

core   +1 more source

Internal-illumination photoacoustic computed tomography [PDF]

open access: yesJournal of Biomedical Optics, 2018
We report a photoacoustic computed tomography (PACT) system using a customized optical fiber with a cylindrical diffuser to internally illuminate deep targets. The traditional external light illumination in PACT usually limits the penetration depth to a few centimeters from the tissue surface, mainly due to strong optical attenuation along the light ...
Mucong, Li   +4 more
openaire   +2 more sources

High-speed three-dimensional photoacoustic computed tomography for preclinical research and clinical translation

open access: yesNature Communications, 2021
Photoacoustic imaging has generated increasing interest for uses in preclinical research and clinical translation. Here the authors develop a three-dimensional photoacoustic computed tomography system that allows for multipurpose imaging of biological ...
Li Lin   +9 more
doaj   +1 more source

Photoacoustic computed tomography correcting for heterogeneity and attenuation [PDF]

open access: yesJournal of Biomedical Optics, 2012
We report an investigation of image reconstruction in photoacoustic tomography for objects that possess heterogeneous material and acoustic attenuation distributions. When the object contains materials, such as bone and soft-tissue, that are modeled using power law attenuation models with distinct exponents, we demonstrate that the effects of acoustic ...
Huang, Chao   +4 more
openaire   +3 more sources

Progress of clinical translation of handheld and semi-handheld photoacoustic imaging

open access: yesPhotoacoustics, 2021
Photoacoustic imaging (PAI), featuring rich contrast, high spatial/temporal resolution and deep penetration, is one of the fastest-growing biomedical imaging technology over the last decade.
Qian Chen, Wei Qin, Weizhi Qi, Lei Xi
doaj   +1 more source

Computed tomography-osteoaboorptiometry [PDF]

open access: yes, 1990
A method of making a visual display of subchondral mineralization in the major synovial joints is described. Unlike existing procedures, it can be used on the living subject. A modified application of computed tomography-densitometry, computed tomography-
Müller-Gerbl, Magdalena   +4 more
core   +1 more source

Photoacoustic imaging of squirrel monkey cortical and subcortical brain regions during peripheral electrical stimulation

open access: yesPhotoacoustics, 2022
The investigation of neuronal activity in non-human primate models is of critical importance due to their genetic similarity to human brains. In this study, we tested the feasibility of using photoacoustic imaging for the detection of cortical and ...
Kai-Wei Chang   +7 more
doaj   +1 more source

Recent developments in multimodality fluorescence imaging probes

open access: yesActa Pharmaceutica Sinica B, 2018
Multimodality optical imaging probes have emerged as powerful tools that improve detection sensitivity and accuracy, important in disease diagnosis and treatment. In this review, we focus on recent developments of optical fluorescence imaging (OFI) probe
Jianhong Zhao   +7 more
doaj   +1 more source

Photoacoustic imaging with fiber optic technology: A review

open access: yesPhotoacoustics, 2020
Photoacoustic imaging (PAI) has achieved remarkable growth in the past few decades since it takes advantage of both optical and ultrasound (US) imaging. In order to better promote the wide clinical applications of PAI, many miniaturized and portable PAI ...
Jingcheng Zhou, Jesse V. Jokerst
doaj   +1 more source

Types/Applications of Photoacoustic Contrast Agents: A Review

open access: yesPhotonics, 2021
Ultrasound imaging, one of the common diagnosis techniques, is frequently used since it is safe, cost-efficient technique and real-time imaging can be conducted.
Jaehun Jung   +3 more
doaj   +1 more source

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