Results 121 to 130 of about 560,191 (256)

A Reversible Clearing Strategy Enables Robust Label‐Free Phase Imaging of Thick Tissues

Laser &Photonics Reviews, EarlyView.
The principle of a reversible clearing strategy via glycerol and tartrazine solution (GTS) for robust whole‐slide label‐free phase imaging of thick tissue slices via high‐throughput Fourier ptychographic microscopy (FPM) and lensless digital holographic microscopy (LDHM). ABSTRACT Thick biological specimens impose strong scattering and attenuation that
Mikołaj Krysa, Anna Chwastowicz, Małgorzata Lenarcik, Paweł Matryba, Piotr Zdańkowski, Maciej Trusiak   +5 more
wiley   +1 more source

Speckle-based off-axis holographic detection for non-contact photoacoustic tomography

Current Directions in Biomedical Engineering, 2015
A very fast innovative holographic off-axis non-contact detection method for Photoacoustic Tomography (PAT) is introduced. It overcomes the main problems of most state-of-the-art photoacoustic imaging approaches that are long acquisition times and the ...
Buj C., Horstmann J., Münter M., Brinkmann R.   +3 more
doaj   +1 more source

Scalable Large Field‐of‐view 3D Photoacoustic Ultrasound Imaging With Digital Multiplexing for Human Extremities

Laser &Photonics Reviews, EarlyView.
A digitally multiplexed, large‐aperture photoacoustic and ultrasound imaging architecture is presented to overcome the fundamental limited‐view artifact inherent in conventional arrays. By significantly broadening the structural detection coverage, this scalable platform enables high‐fidelity 3D visualization of human extremities within a single ...
Sinyoung Park, Minsik Sung, Hyunhee Kim, Kijong Lee, Joongho Ahn, Eun‐Yeong Park, Sungsik Park, Hyung Ham Kim, Chulhong Kim   +8 more
wiley   +1 more source

Spatiospectral Photoacoustic Microscopy With Gain‐Switched Ti:Sapphire Laser for High‐Accuracy Molecular Dynamics Imaging

Laser &Photonics Reviews, EarlyView.
Spatiospectral photoacoustic microscopy is enabled by stable, wavelength‐tunable dual‐pulse excitation from a gain‐switched Ti:sapphire laser. Intrinsically synchronized 532‐nm and NIR‐I pulses provide single‐scan, co‐registered mapping of oxygen saturation and indocyanine green dynamics in vivo.
Yong‐Jae Lee, Thanh Dat Le, Dong Hoon Song, Jin Hee Im, Seong‐Young Kwon, Tae Young Jeong, Jung‐Joon Min, Changho Lee, Tae Joong Eom   +8 more
wiley   +1 more source

Model-Based Reconstructions for Quantitative Imaging in Photoacoustic Tomography [PDF]

The reconstruction task in photoacoustic tomography can vary a lot depending on measured targets, geometry, and especially the quantity we want to recover.
Tarvainen, Tanja, Hauptmann, Andreas
core   +1 more source

Tunable, High Pulse Energy and Narrow Linewidth Gas‐Filled Fiber Laser Across Near‐ and Mid‐Infrared

Laser &Photonics Reviews, EarlyView.
A cascaded gas‐filled anti‐resonant hollow‐core fiber architecture enables broadly tunable infrared Raman lasers spanning ∼1.4–4.6 µm while maintaining microjoule‐level pulse energies and gigahertz‐level linewidths. The approach combines a wavelength‐tunable pump laser with optimized Raman frequency conversion, providing a compact route to high ...
Yazhou Wang, Marcello Meneghetti, Manoj K. Dasa, Timothy Bate, J. E. Antonio‐Lopez, Ian A. Davidson, Qiang Fu, Jaroslaw Rzegocki, Gregory T. Jasion, Francesco Poletti, Rodrigo Amezcua‐Correa, Christos Markos   +11 more
wiley   +1 more source

High-frequency transparent ultrasound transducer array for photoacoustic imaging application

Journal of Advanced Dielectrics
Photoacoustic imaging (PAI) technique has been employed as a powerful tool for experimental and clinical applications, however, conventional ultrasound transducers block the light path, leading to bulky and inefficient PAI system designs.
Zhang Jiaming, Gao Wen, Bao Guocui, Hou Shilin, Yang Fan, Gong Xiaojing, Lin Riqiang, Lam Kwok-Ho, Dai Jiyan   +8 more
doaj   +1 more source

Optical Stimulation and Monitoring of the Peripheral Nervous System: Perspectives and Challenges Toward Clinical Translation

Laser &Photonics Reviews, EarlyView.
Optical neuromodulation with IR light allows stimulation of the PNS without the need for physical contact with the target nerve or without requiring any genetic modification. The clinical translation of this technique will pave the way to the development of neural interfaces for restoring sensory feedback in individuals with limb amputation.
Federica Piccirillo, Sarassunta Ucci, Anna Aliberti, Patrizio Vaiano, Alessia La Rocca, Francesca Angelone, Silvia Pascarella, Pellegrino Lippiello, Maria Concetta Miniaci, Giuseppe Prisco, Michela Russo, Francesco Amato, Deyanira Contartese, Milena Fini, Gianluca Giavaresi, Lucia Martini, Francesco Rosa, Cosimo Gentile, Emanuele Gruppioni, Armando Ricciardi, Andrea Cusano   +20 more
wiley   +1 more source

OpenQPAIData: Measurements of test objects with reference labels for quantitative photoacoustic imaging research

Scientific Data
The goal of quantitative photoacoustic imaging (qPAI) is to determine absolute chromophore concentrations from multispectral photoacoustic images. Achieving this goal would enable bias-free molecular photoacoustic imaging and the derivation of functional
Janek Gröhl, Sandeep Kumar Kalva, Berkan Lafci, Francesca Di Cecio, Ran Tao, Thomas R. Else, Lorna Wright, Daniel Razansky, Sarah E. Bohndiek   +8 more
doaj   +1 more source

Triggering of Koebner Phenomenon by Picosecond Laser in a Psoriatic Patient: Clinical and Immunopathologic Insights

Lasers in Surgery and Medicine, EarlyView.
ABSTRACT Objectives To report the first case of Koebner phenomenon induced by picosecond laser treatment in a patient with psoriasis. We analyzed the clinical and histopathological features and discussed the possible mechanism by which the laser's photomechanical effect triggered the reaction.
Teppei Sakai, Koya Sonoda, Jun Omatsu
wiley   +1 more source