Results 171 to 180 of about 1,807,104 (196)

Fast wavelet-based photoacoustic microscopy

Journal of the Optical Society of America A, 2021
A novel photoacoustic microscopy (PAM) structure, based on Haar wavelet patterns, is proposed in this paper. Its main goal is to mitigate the PAM imaging resolution and thus the time of its sampling process without compromising the image quality. Owing to the intrinsic nature of wavelet transform, this structure collects spatial and
Hassan, Abbasi, Seyed Masood, Mostafavi, Zahra, Kavehvash   +2 more
openaire   +2 more sources

Noise‐insensitive defocused signal and resolution enhancement for optical‐resolution photoacoustic microscopy via deep learning

Journal of Biophotonics, 2023
Optical‐resolution photoacoustic microscopy suffers from narrow depth of field and a significant deterioration in defocused signal intensity and spatial resolution.
Rui Wang, Zhipeng Zhang, Ruiyi Chen, Xiaohai Yu, Hongyu Zhang, Gang Hu, Qiegen Liu, Xianlin Song   +7 more
semanticscholar   +1 more source

Organ‐PAM: Photoacoustic Microscopy of Whole‐organ Multiset Vessel Systems

Laser & Photonics Reviews, 2023
Organs maintain their unique functions through a variety of distinctive vessel systems. However, examination of multiset vessels over the entire organ still remains challenging due to the difficulties of assigning multiple vessel systems and labor ...
Junning Zhang, Dinglu Peng, Wei Qin, W. Qi, Xiaoya Liu, Yucheng Luo, Qiongyu Guo, Lei Xi   +7 more
semanticscholar   +1 more source

High-resolution imaging of the whole eye with photoacoustic microscopy.

Optics Letters, 2023
Observation and characterization of any changes in anatomical structures of ocular components remain as a conventional technique for diagnosis, staging, therapeutic treatments, and post-treatment monitoring of any ophthalmic disorders.
Deep Samanta, Souradip Paul, Arijit Paramanick, Vishal Raval, M. Suheshkumar Singh   +4 more
semanticscholar   +1 more source

Acoustic-spectrum-compensated photoacoustic microscopy

Optics Letters, 2020
Photoacoustic microscopy (PAM) can label-free image oxy- and deoxy-hemoglobin ( H b O 2 and Hb) concentrations in vivo, providing useful information for metabolic researches and diagnostic applications. Conventional PAM assumes a linear relationship between the photoacoustic amplitude
Yizhi Liang, Huan Liu, Qiang Li, Long Jin, Bai-Ou Guan, Lidai Wang   +5 more
openaire   +2 more sources

High‐Efficiency Photoacoustic Microscopy for Ultrafast Hemodynamic Imaging

Laser & Photonics Reviews
Understanding brain functions requires visualization of cerebral hemodynamics with a high spatiotemporal resolution. Recent advances utilize various scanning schemes to promote the imaging speed of photoacoustic microscopy for label‐free hemodynamic ...
Wei Qin, Tingting Li, Yifan Chen, Xiao Liang, Linyang Li, Heng Guo, W. Qi, Lei Xi   +7 more
semanticscholar   +1 more source

De-Noising of Photoacoustic Microscopy Images by Attentive Generative Adversarial Network

IEEE Transactions on Medical Imaging, 2022
As a hybrid imaging technology, photoacoustic microscopy (PAM) imaging suffers from noise due to the maximum permissible exposure of laser intensity, attenuation of ultrasound in the tissue, and the inherent noise of the transducer.
Da He, Jiasheng Zhou, Xiaoyu Shang, Xingye Tang, Jiajia Luo, Sung-Liang Chen   +5 more
semanticscholar   +1 more source

Deep and Domain Transfer Learning Aided Photoacoustic Microscopy: Acoustic Resolution to Optical Resolution

IEEE Transactions on Medical Imaging, 2022
Acoustic resolution photoacoustic micros- copy (AR-PAM) can achieve deeper imaging depth in biological tissue, with the sacrifice of imaging resolution compared with optical resolution photoacoustic microscopy (OR-PAM).
Zhengyuan Zhang, Haoran Jin, Zesheng Zheng, Arunima Sharma, Lipo P. Wang, M. Pramanik, Yuanjin Zheng   +6 more
semanticscholar   +1 more source

Transportable Multispectral Optical-Resolution Photoacoustic Microscopy Using Stimulated Raman Scattering Spectrum

IEEE Transactions on Instrumentation and Measurement
Photoacoustic imaging (PAI) has become a powerful biomedical imaging technique in the last decades, combining optical and ultrasound imaging (USI) principles.
Haeni Lee, S. Park, Jeongwoo Park, Soon-Woo Cho, S. Han, Joongho Ahn, Seonghee Cho, Chulhong Kim, Chang-Soek Kim, Jeesu Kim   +9 more
semanticscholar   +1 more source

Prospective Respiration-Gated Photoacoustic Microscopy

IEEE Transactions on Biomedical Engineering, 2020
Photoacoustic microscopy (PAM) is a promising biomedical imaging technique that relies on sequential excitation to generate three-dimensional images. It combines the high contrast of optical imaging with high penetration depth of ultrasound imaging.
Jianshuang Wei, Qun Wang, Xianlin Song, Qingming Luo, Xiaoquan Yang   +4 more
openaire   +2 more sources