Results 61 to 70 of about 13,605,822 (324)

Resolution Enhancement Strategies in Photoacoustic Microscopy: A Comprehensive Review

Micromachines
Photoacoustic imaging has emerged as a promising modality for medical imaging since its introduction. Photoacoustic microscopy (PAM), which is based on the photoacoustic effect, combines the advantages of both optical and acoustic imaging modalities. PAM
Jinying Zhang, Yifan Shi, Yexiaotong Zhang, Haoran Liu, Shihao Li, Linglu Liu   +5 more
doaj   +1 more source

Photoacoustic Tomography in a Rectangular Reflecting Cavity [PDF]

, 2013
Almost all known image reconstruction algorithms for photoacoustic and thermoacoustic tomography assume that the acoustic waves leave the region of interest after a finite time.
Cox, B. T., Holman, B., Kunyansky, L.
core   +2 more sources

Adaptive polarization photoacoustic computed tomography for biological anisotropic tissue imaging

Photoacoustics, 2023
Most photoacoustic computed tomography (PACT) systems usually ignore the anisotropy of the tissue absorption coefficient, which will lead to the lack of information in reconstructed images.
Yang Zhang, Christ Glorieux, Shufan Yang, Kai Gu, Zhiying Xia, Ruijie Hou, Lianping Hou, Xuefeng Liu, Jichuan Xiong   +8 more
doaj   +1 more source

Micro-Doppler Photoacoustic Effect and Sensing by Ultrasound Radar [PDF]

IEEE Journal of Selected Topics in Quantum Electronics, 2014
In recent years, photoacoustics have been studied for both anatomical and functional biomedical imaging. However, the physical interaction between photoacoustic-generated endogenous waves and an exogenously applied ultrasound wave is a largely unexplored
Fei Gao, Xiaohua Feng, Yuanjin Zheng
semanticscholar   +1 more source

Electromagnetic Radiation Detection with Broad Spectral Sensitivity and Large Dynamic Range using Cantilever-based Photoacoustic Effect [PDF]

, 2021
Sucheta Sharma, Toni Laurila, J. J. Rossi, Juho Uotila, Markku Vainio, Farshid Manoocheri, Erkki Ikonen   +6 more
openalex   +2 more sources

Photoacoustic and fluorescence lifetime imaging of diatoms

Photoacoustics, 2020
Photoacoustic and fluorescent methods are used intensely in biology and medicine. These approaches can also be used to investigate unicellular diatom algae that are extremely important for Earth’s ecology.
Julijana Cvjetinovic, Alexey I. Salimon, Marina V. Novoselova, Philipp V. Sapozhnikov, Evgeny A. Shirshin, Alexey M. Yashchenok, Olga Yu. Kalinina, Alexander M. Korsunsky, Dmitry A. Gorin   +8 more
doaj   +1 more source

Improving Photoacoustic-guided Focusing in Scattering Media by Spectrally Filtered Detection

, 2013
We experimentally and numerically study the potential of photoacoustic-guiding for light focusing through scattering samples via wavefront-shaping and iterative optimization.
Boccara, Claude, Bossy, Emmanuel, Chaigne, Thomas, Gateau, Jérôme, Gigan, Sylvain, Katz, Ori   +5 more
core   +3 more sources

Photoacoustic Effect in Laser Annealing

Japanese Journal of Applied Physics, 1980
The acoustic wave generated in a silicon crystal during the laser annealing has been observed. The acoustic signal increases steeply with the incident laser energy beyond the melting threshold. This is explained by the increase of the optical absorption coefficient and the resultant increase of the temperature gradient in the sample accompanying the
openaire   +1 more source

Ferritin‐Doped Nanoparticles Triggered Tumor‐Specific Darkening for Enhanced Photothermal Tumor Ablation and Immune Activation

Advanced Healthcare Materials, EarlyView.
Ferritin‐doped hybrid nanoparticles triggered accurate tumor‐specific hemorrhage for enhanced in situ photothermal therapy and evoked anti‐tumor immunity. Notably, HFn/GA‐Fe specifically induced tumor hemorrhage 12 h after intravenous injection, resulting in visible color darkening. Through photoacoustic imaging, tumor vessels could be clearly observed
Haidong Zha, Xiao Liang, Long Xi, Jiamao Chen, Wenzhao Zhong, Zhen Yuan, Meng Xu, Ying Zheng   +7 more
wiley   +1 more source

Cloud condensation nuclei activity, closure, and droplet growth kinetics of Houston aerosol during the Gulf of Mexico Atmospheric Composition and Climate Study (GoMACCS) [PDF]

, 2009
In situ cloud condensation nuclei (CCN) measurements were obtained in the boundary layer over Houston, Texas, during the 2006 Gulf of Mexico Atmospheric Composition and Climate Study (GoMACCS) campaign onboard the CIRPAS Twin Otter.
Dubey, Manvendra K., Feingold, Graham, Flagan, Richard C., Gates, Harmony, Jonsson, Haflidi H., Lance, Sara, Mazzoleni, Claudio, Murphy, Shane M., Nenes, Athanasios, Rissman, Tracey A., Seinfeld, John H., Sorooshian, Armin, Varutbangkul, Varuntida   +12 more
core   +2 more sources