Results 31 to 40 of about 1,807,104 (196)

High-Sensitivity Optical-Resolution Photoacoustic Microscopy with an Optical-Acoustic Combiner Based on an Off-Axis Parabolic Acoustic Mirror

open access: yesPhotonics, 2021
Optical-resolution photoacoustic microscopy (OR-PAM) is a promising noninvasive biomedical imaging technology with label-free optical absorption contrasts. Performance of OR-PAM is usually closely related to the optical-acoustic combiner.
Xiang Zhang   +7 more
doaj   +1 more source

Real-time whole-brain imaging of hemodynamics and oxygenation at micro-vessel resolution with ultrafast wide-field photoacoustic microscopy

open access: yesLight: Science & Applications, 2022
High-speed high-resolution imaging of the whole-brain hemodynamics is critically important to facilitating neurovascular research. High imaging speed and image quality are crucial to visualizing real-time hemodynamics in complex brain vascular networks ...
Xiaoyi Zhu   +11 more
semanticscholar   +2 more sources

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

Towards non-contact photoacoustic imaging [review]

open access: yesPhotoacoustics, 2020
Photoacoustic imaging (PAI) takes advantage of both optical and ultrasound imaging properties to visualize optical absorption with high resolution and contrast.
Zohreh Hosseinaee   +3 more
doaj   +1 more source

Handheld Photoacoustic Microscopy Probe [PDF]

open access: yesScientific Reports, 2017
AbstractOptical resolution photoacoustic microscopy (OR-PAM) is a non-invasive, label-free method of in vivo imaging with microscopic resolution and high optical contrast. Based on intrinsic contrasts, OR-PAM has expanded to include in vivo vessel imaging, flow cytometry, physiological parameter analysis, and single-cell characterization.
Kyungjin Park   +5 more
openaire   +3 more sources

Ultraviolet metasurface-assisted photoacoustic microscopy with great enhancement in DOF for fast histology imaging

open access: yesPhotoacoustics, 2023
Pathology interpretations of tissue rely on the gold standard of histology imaging, potentially hampering timely access to critical information for diagnosis and management of neoplasms because of tedious sample preparations.
Wei Song   +6 more
semanticscholar   +1 more source

Grueneisen Relaxation Photoacoustic Microscopy [PDF]

open access: yesPhysical Review Letters, 2014
The temperature-dependent property of the Grueneisen parameter has been employed in photoacoustic imaging mainly to measure tissue temperature. Here we explore this property using a different approach and develop Grueneisen relaxation photoacoustic microscopy (GR-PAM), a technique that images nonradiative absorption with confocal optical resolution. GR-
Wang, Lidai, Zhang, Chi, Wang, Lihong V.
openaire   +3 more sources

Slow-sound photoacoustic microscopy [PDF]

open access: yesApplied Physics Letters, 2013
We propose to enhance the axial resolution of photoacoustic microscopy (PAM) by reducing the speed of sound within the imaging region of interest. With silicone oil immersion, we have achieved a finest axial resolution of 5.8 μm for PAM, as validated by phantom experiments.
Zhang, Chi   +3 more
openaire   +3 more sources

Automated Laser-Fiber Coupling Module for Optical-Resolution Photoacoustic Microscopy

open access: yesSensors, 2023
Photoacoustic imaging has emerged as a promising biomedical imaging technique that enables visualization of the optical absorption characteristics of biological tissues in vivo.
Seongyi Han   +5 more
doaj   +1 more source

Enhanced resolution and sensitivity acoustic-resolution photoacoustic microscopy with semi/unsupervised GANs

open access: yesScientific Reports, 2023
Acoustic-resolution photoacoustic microscopy (AR-PAM) enables visualization of biological tissues at depths of several millimeters with superior optical absorption contrast.
Thanh Dat Le, J. Min, Changho Lee
semanticscholar   +1 more source

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