Results 51 to 60 of about 20,149 (224)

Wearable optical resolution photoacoustic microscopy [PDF]

Journal of Biophotonics, 2019
AbstractOptical resolution photoacoustic microscopy (ORPAM) is an emerging imaging technique, which has been extensively used to study various brain activities and disorders of the anesthetized/restricted rodents with a special focus on the morphological and functional visualization of cerebral cortex.
Qian Chen, Huikai Xie, Lei Xi
openaire   +2 more sources

Minimally invasive photoacoustic imaging: Current status and future perspectives

Photoacoustics, 2019
Photoacoustic imaging (PAI) is an emerging biomedical imaging modality that is based on optical absorption contrast, capable of revealing distinct spectroscopic signatures of tissue at high spatial resolution and large imaging depths.
Tianrui Zhao, Adrien E. Desjardins, Sebastien Ourselin, Tom Vercauteren, Wenfeng Xia   +4 more
doaj   +1 more source

Image Enhancement and Noise Reduction Using Modified Delay-Multiply-and-Sum Beamformer: Application to Medical Photoacoustic Imaging

, 2018
Photoacoustic imaging (PAI) is an emerging biomedical imaging modality capable of providing both high contrast and high resolution of optical and UltraSound (US) imaging.
Mahloojifar, Ali, Mozaffarzadeh, Moein, Orooji, Mahdi   +2 more
core   +1 more source

Light Focusing and Two-Dimensional Imaging Through Scattering Media using the Photoacoustic Transmission-Matrix with an Ultrasound Array [PDF]

, 2014
We implement the photoacoustic transmission-matrix approach on a two-dimensional photoacoustic imaging system, using a 15 MHz linear ultrasound array.
Bossy, Emmanuel, Chaigne, Thomas, Gateau, Jerome, Gigan, Sylvain, Katz, Ori   +4 more
core   +2 more sources

Sensitivity of photoacoustic microscopy

Photoacoustics, 2014
Building on its high spatial resolution, deep penetration depth and excellent image contrast, 3D photoacoustic microscopy (PAM) has grown tremendously since its first publication in 2005. Integrating optical excitation and acoustic detection, PAM has broken through both the optical diffusion and optical diffraction limits.
Yao, Junjie, Wang, Lihong V.
openaire   +3 more sources

Label-free high-throughput photoacoustic tomography of suspected circulating melanoma tumor cells in patients in vivo [PDF]

, 2020
Significance: Detection and characterization of circulating tumor cells (CTCs), a key determinant of metastasis, are critical for determining risk of disease progression, understanding metastatic pathways, and facilitating early clinical intervention.
Cornelius, Lynn A., Hai, Pengfei, Li, Yang, Qu, Yuan, Shmuylovich, Leonid, Wang, Lihong V., Zhu, Liren   +6 more
core   +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

Graphics processing unit accelerating compressed sensing photoacoustic computed tomography with total variation [PDF]

, 2020
Photoacoustic computed tomography with compressed sensing (CS-PACT) is a commonly used imaging strategy for sparse-sampling PACT. However, it is very time-consuming because of the iterative process involved in the image reconstruction.
Bai, Yuanyuan, Gao, Mingjie, Liu, Chengbo, Meng, Jing, Si, Guangtao, Wang, Lihong V.   +5 more
core  

Laser Engineering of HfN‐Based Nanoparticles for Safe NIR‐I Photothermal and X‐ray Enhancing Cancer Therapies

Advanced Functional Materials, EarlyView.
In this study, we produced HfN‐based nanoparticles via femtosecond laser ablation in acetone. The nanoparticles exhibit a red‐shifted plasmonic resonance in the NIR‐I window, colloidal stability after coating with polyethyleneglycol, and excellent biocompatibility. The photothermal and X‐ray sensitization therapeutic effects were demonstrated for tumor
Julia S. Babkova, Ivan V. Zelepukin, Lyubov V. Gorelik, Anton L. Popov, Andrei I. Pastukhov, Gleb V. Tikhonowski, Maxim S. Savinov, Danil D. Kolmanovich, Nikita A. Pivovarov, Alina Yu. Kapitannikova, Anton A. Popov, Anna S. Sogomonyan, Vsevolod A. Skribitsky, Aziz B. Mirkasymov, Andrei V. Kabashin, Sergey M. Deyev   +15 more
wiley   +1 more source

SCANNING PHOTOACOUSTIC MICROSCOPY

Acta Physica Sinica, 1982
The principle, possible applications and prospects of the scanning photoacoustie microscopy are described briefly. The microscopy system presented herewith attains a resolution of about 4,5 μm. Some images of such samples as the interdigital transducer of surface acoustic wave, integrated circuit and in particular the subsurface structure of the ...
null ZHANG SHU-YI, null YU CHAO, null MIAO YONG-ZHI, null TANG ZHENG-YAN, null GAO DUN-TANG   +4 more
openaire   +1 more source