Results 21 to 30 of about 60,263 (232)

Photoacoustic computed microscopy [PDF]

open access: yesScientific Reports, 2014
Photoacoustic microscopy (PAM) is emerging as a powerful technique for imaging microvasculature at depths beyond the ~1 mm depth limit associated with confocal microscopy, two-photon microscopy and optical coherence tomography. PAM, however, is currently qualitative in nature and cannot quantitatively measure important functional parameters including ...
Yao, Lei, Xi, Lei, Jiang, Huabei
openaire   +2 more sources

Urogenital photoacoustic endoscope [PDF]

open access: yesOptics Letters, 2014
Photoacoustic (PA) endoscopy for human urogenital imaging has the potential to diagnose many important diseases, such as endometrial and prostate cancers. We have specifically developed a 12.7 mm diameter, rigid, side-scanning PA endoscopic probe for such applications.
Li, Chiye   +8 more
openaire   +3 more sources

Photoacoustic ocular imaging [PDF]

open access: yesOptics Letters, 2010
We developed a photoacoustic ocular imaging device and demonstrated its utility in imaging the deeper layers of the eye including the retina, choroid, and optic nerve. Using safe laser intensity, the photoacoustic system was able to visualize the blood distribution of an enucleated pig's eye and an eye of a living rabbit.
Adam, de la Zerda   +8 more
openaire   +2 more sources

Photoacoustic detection based permeation measurements: Case study for separation of the instrument response from the measured physical process

open access: yesPhotoacoustics, 2018
In a carrier flow based permeation system the measured permeation curve is the convolution of two processes: the intrinsic permeation process and the transfer of the permeated molecules through the measuring system.
Zoltán Bozóki   +4 more
doaj   +1 more source

Ultrahigh Resolution Pulsed Laser-Induced Photoacoustic Detection of Multi-Scale Damage in CFRP Composites

open access: yesApplied Sciences, 2020
This paper presents a photoacoustic non-destructive evaluation (pNDE) system with an ultrahigh resolution for the detection of multi-scale damage in carbon fiber-reinforced plastic (CFRP) composites.
Siqi Wang   +5 more
doaj   +1 more source

Optical and Photoacoustic Properties of Laser-Ablated Silver Nanoparticles in a Carbon Dots Solution

open access: yesMolecules, 2020
This study used the carbon dots solution for the laser ablation technique to fabricate silver nanoparticles. The ablation time range was from 5 min to 20 min.
Amir Reza Sadrolhosseini   +4 more
doaj   +1 more source

Approximate k-space models and Deep Learning for fast photoacoustic reconstruction [PDF]

open access: yes, 2018
We present a framework for accelerated iterative reconstructions using a fast and approximate forward model that is based on k-space methods for photoacoustic tomography. The approximate model introduces aliasing artefacts in the gradient information for
Arridge, Simon   +6 more
core   +2 more sources

Photoacoustic Tomography Appearance of Fat Necrosis: A First-in-Human Demonstration of Biochemical Signatures along with Histological Correlation

open access: yesDiagnostics, 2022
A 50-year-old woman with no past medical history presented with a left anterior chest wall mass that was clinically soft, mobile, and non-tender. A targeted ultrasound (US) showed findings suggestive of a lipoma.
Yonggeng Goh   +13 more
doaj   +1 more source

Photoacoustic Imaging to Track Magnetic-manipulated Micro-Robots in Deep Tissue

open access: yesSensors, 2020
The next generation of intelligent robotic systems has been envisioned as micro-scale mobile and externally controllable robots. Visualization of such small size microrobots to track their motion in nontransparent medium such as human tissue remains a ...
Yan Yan   +2 more
doaj   +1 more source

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

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