Results 91 to 100 of about 1,807,104 (196)

Photoacoustic microscopy with sparse data by convolutional neural networks

Photoacoustics, 2021
The point-by-point scanning mechanism of photoacoustic microscopy (PAM) results in low-speed imaging, limiting the application of PAM. In this work, we propose a method to improve the quality of sparse PAM images using convolutional neural networks (CNNs)
Jiasheng Zhou, Da He, Xiaoyu Shang, Zhendong Guo, Sung-Liang Chen, Jiajia Luo   +5 more
semanticscholar   +1 more source

Original Research. Photoacoustic Microscopy in Dental Medicine

Journal of Interdisciplinary Medicine, 2017
Introduction: Photoacoustic microscopy, also known as optoacoustic imaging, is a comparatively new method of investigation in dental medicine, which uses a laser-generated ultrasound (short laser pulses) to achieve images for interpretation ...
Stan Adrian Tudor, Idorași Laura, Stan Victor Florin, Rogobete Alexandru Florin, Sinescu Cosmin, Negruțiu Meda Lavinia, Romînu Mihai   +6 more
doaj   +1 more source

In vivo characterization and analysis of glioblastoma at different stages using multiscale photoacoustic molecular imaging

Photoacoustics, 2023
Simultaneous spatio-temporal description of tumor microvasculature, blood-brain barrier, and immune activity is pivotal to understanding the evolution mechanisms of highly aggressive glioblastoma, one of the most common primary brain tumors in adults ...
Jinde Zhang, Xiang Sun, Honghui Li, Haosong Ma, Fei Duan, Zhiyou Wu, Bowen Zhu, Ronghe Chen, Liming Nie   +8 more
doaj   +1 more source

High-speed optical resolution photoacoustic microscopy with MEMS scanner using a novel and simple distortion correction method

Scientific Reports, 2022
Optical resolution photoacoustic microscopy (OR-PAM) is a remarkable biomedical imaging technique that can selectively visualize microtissues with optical-dependent high resolution.
Ryo Shintate, T. Ishii, Joongho Ahn, J. Kim, Chulhong Kim, Y. Saijo   +5 more
semanticscholar   +1 more source

Laser Photoacoustic Microscopy

The Review of Laser Engineering, 1983
We have performed photoacoustic micro-imaging using a microphone detection technique. A microcomputer controlled photoacoustic imaging system is developed. A sample on a sensitive photoacoustic cell is scanned mechanically and photoacoustic signals generated by a focused laser beam are detected with a condenser microphone and a lock-in amplifier.
Toyohiko YATAGAI, Masahide ITOH, Makoto HINO, Ichirou TAKAHASHI, Hiroyoshi SAITO, Pil Hyon KIM, Susumu NAMBA   +6 more
openaire   +2 more sources

Single-shot photoacoustic microscopy of hemoglobin concentration, oxygen saturation, and blood flow in sub-microseconds

Photoacoustics, 2020
We present fast functional optical-resolution photoacoustic microscopy (OR-PAM) that can simultaneously image hemoglobin concentration, blood flow speed, and oxygen saturation with three-pulse excitation. To instantaneously determine the blood flow speed,
Chao Liu, Yizhi Liang, Lidai Wang
doaj   +1 more source

An Analysis Scheme for Investigation of Effects of Various Parameters on Signals in Acoustic-Resolution Photoacoustic Microscopy of Mice Brain: a Simulation Study

Frontiers in Biomedical Technologies, 2017
Purpose:Photoacoustic spectral analysis is a novel tool for studying various parameters affecting signals in Photoacoustic microscopy. But only observing frequency components of photoacoustic signals doesn’t make enough data for a desirable analysis ...
Hossein Ghadiri, Mohammad Reza Fouladi, Arman Rahmim   +2 more
doaj  

Cylindrical illumination with angular coupling for whole-prostate photoacoustic tomography [PDF]

, 2019
Current diagnosis of prostate cancer relies on histological analysis of tissue samples acquired by biopsy, which could benefit from real-time identification of suspicious lesions.
Bungart, Brittani, Cao, Yingchun, Cheng, Ji-Xin, Cheng, Liang, Gorsky, Sean, Koch, Michael O., Lan, Lu, Masterson, Timothy, Roblyer, Darren, Yang-Tran, Tiffany   +9 more
core   +1 more source

Photoacoustic microscopy of vascular adaptation and tissue oxygen metabolism during cutaneous wound healing.

Biomedical Optics Express, 2022
Cutaneous wounds affect millions of people every year. Vascularization and blood oxygen delivery are critical bottlenecks in wound healing, and understanding the spatiotemporal dynamics of these processes may lead to more effective therapeutic strategies
Naidi Sun, Anthony Bruce, Bo Ning, Rui Cao, Yiming Wang, Fenghe Zhong, S. Peirce, Song Hu   +7 more
semanticscholar   +1 more source

Three-dimensional Optical-resolution Photoacoustic Microscopy [PDF]

Journal of Visualized Experiments, 2011
Optical microscopy, providing valuable insights at the cellular and organelle levels, has been widely recognized as an enabling biomedical technology. As the mainstays of in vivo three-dimensional (3-D) optical microscopy, single-/multi-photon fluorescence microscopy and optical coherence tomography (OCT) have demonstrated their extraordinary ...
Hu, Song, Maslov, Konstantin, Wang, Lihong V.   +2 more
openaire   +4 more sources