Results 31 to 40 of about 92,210 (293)

In vivo three-dimensional multispectral photoacoustic imaging of dual enzyme-driven cyclic cascade reaction for tumor catalytic therapy

Nature Communications, 2022
Non-invasive visualization of dynamic molecular events in real-time via molecular imaging may enable the monitoring of cascade catalytic reactions in living systems, however effective imaging modalities and a robust catalytic reaction system are lacking.
Shan Lei, Jing Zhang, N. Blum, Meng Li, Dong-Yang Zhang, Weimin Yin, Feng Zhao, Jing Lin, Peng Huang   +8 more
semanticscholar   +1 more source

Urogenital photoacoustic endoscope [PDF]

Optics 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, Yang, Joon-Mo, Chen, Ruimin, Yeh, Cheng-Hung, Zhu, Liren, Maslov, Konstantin, Zhou, Qifa, Shung, K. Kirk, Wang, Lihong V.   +8 more
openaire   +3 more sources

Photoacoustic spectroscopy-based ppb-level multi-gas sensor using symmetric multi-resonant cavity photoacoustic cell

Photoacoustics, 2023
In this paper, we propose and experimentally demonstrate a symmetric multi-resonant cavity photoacoustic cell (MR-PAC) with dual microphones detection, based on multi-resonator photoacoustic spectroscopy (MR-PAS). The designed photoacoustic cell contains
Tailin Li, C. Sima, Yan Ai, Chen Tong, Jinbiao Zhao, Zikai Zhao, Ping Lu   +6 more
semanticscholar   +1 more source

Photoacoustic ocular imaging [PDF]

Optics 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, Yannis M, Paulus, Robert, Teed, Sunil, Bodapati, Yosh, Dollberg, Butrus T, Khuri-Yakub, Mark S, Blumenkranz, Darius M, Moshfeghi, Sanjiv Sam, Gambhir   +8 more
openaire   +2 more sources

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

Photoacoustics, 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, Tibor Guba, Tibor Ajtai, Anna Szabó, Gábor Szabó   +4 more
doaj   +1 more source

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

Applied 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, Jesse Echeverry, Luis Trevisi, Kiana Prather, Liangzhong Xiang, Yingtao Liu   +5 more
doaj   +1 more source

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

Molecules, 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, Ganesan Krishnan, Suhaidi Shafie, Suraya Abdul Rashid, Sulaiman Wadi Harun   +4 more
doaj   +1 more source

Accelerated High-Resolution Photoacoustic Tomography via Compressed Sensing [PDF]

, 2016
Current 3D photoacoustic tomography (PAT) systems offer either high image quality or high frame rates but are not able to deliver high spatial and temporal resolution simultaneously, which limits their ability to image dynamic processes in living tissue.
Arridge, Simon, Beard, Paul, Betcke, Marta, Cox, Ben, Huynh, Nam, Lucka, Felix, Ogunlade, Olumide, Zhang, Edward   +7 more
core   +2 more sources

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

Diagnostics, 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, Ghayathri Balasundaram, Hui Min Tan, Thomas Choudary Putti, Celene Wei Qi Ng, Eric Fang, Renzhe Bi, Siau Wei Tang, Shaik Ahmad Buhari, Mikael Hartman, Ching Wan Chan, Yi Ting Lim, Malini Olivo, Swee Tian Quek   +13 more
doaj   +1 more source

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

Sensors, 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, Wuming Jing, Mohammad Mehrmohammadi   +2 more
doaj   +1 more source