Results 71 to 80 of about 858,901 (185)

High-resolution transport-of-intensity quantitative phase microscopy with annular illumination

, 2017
For quantitative phase imaging (QPI) based on transport-of-intensity equation (TIE), partially coherent illumination provides speckle-free imaging, compatibility with brightfield microscopy, and transverse resolution beyond coherent diffraction limit ...
Asundi, Anand, Chen, Qian, Li, Jiaji, Sun, Jiasong, Zhang, Jialin, Zuo, Chao   +5 more
core   +1 more source

Forward model for quantitative pulse-echo speed-of-sound imaging [PDF]

, 2019
Computed ultrasound tomography in echo mode (CUTE) allows determining the spatial distribution of speed-of-sound (SoS) inside tissue using handheld pulse-echo ultrasound (US).
Frenz, Martin, Jaeger, Michael, Kuriakose, Maju, Stähli, Patrick   +3 more
core   +2 more sources

Phase calibration target for quantitative phase imaging with ptychography

Optics Express, 2016
Quantitative phase imaging (QPI) utilizes refractive index and thickness variations that lead to optical phase shifts. This gives contrast to images of transparent objects. In quantitative biology, phase images are used to accurately segment cells and calculate properties such as dry mass, volume and proliferation rate.
T M, Godden, A, Muñiz-Piniella, J D, Claverley, A, Yacoot, M J, Humphry   +4 more
openaire   +2 more sources

Illumination coherence engineering and quantitative phase imaging [PDF]

Optics Letters, 2014
Partially coherent illumination provides significant advantages such as speckle-free imaging and enhanced optical sectioning in optical microscopy. The knowledge of the spatial and temporal coherence is crucial to obtain accurate quantitative phase imaging (QPI) of specimens such as live cells, micrometer-sized particles, etc.
Rodrigo Martín-Romo, José Augusto, Alieva Krasheninnikova, Tatiana   +1 more
openaire   +3 more sources

High-throughput transport-of-intensity quantitative phase imaging with aberration correction

Light: Advanced Manufacturing
The transport of intensity equation (TIE) is a well-established phase retrieval technique that enables incoherent diffraction limit-resolution imaging and is compatible with widely available brightfield microscopy hardware.
Linpeng Lu, Shun Zhou, Yefeng Shu, Yanbo Jin, Jiasong Sun, Ran Ye, Maciej Trusiak, Peng Gao, Chao Zuo   +8 more
doaj   +1 more source

Phase imaging with computational specificity (PICS) for measuring dry mass changes in sub-cellular compartments

Nature Communications, 2020
Quantitative phase imaging suffers from a lack of specificity in label-free imaging. Here, the authors introduce Phase Imaging with Computational Specificity (PICS), a method that combines phase imaging with machine learning techniques to provide ...
Mikhail E. Kandel, Yuchen R. He, Young Jae Lee, Taylor Hsuan-Yu Chen, Kathryn Michele Sullivan, Onur Aydin, M. Taher A. Saif, Hyunjoon Kong, Nahil Sobh, Gabriel Popescu   +9 more
doaj   +1 more source

Volumetric Refractive Index Measurement and Quantitative Density Analysis of Mouse Brain Tissue with Sub‐Micrometer Spatial Resolution

Advanced Photonics Research, 2023
High‐resolution structural imaging of brain tissue is important for neuroscience research. However, conventional approaches have several limitations, such as the need for exogenous staining, limited accessibility to volumetric information, and ...
Ariel J. Lee, Herve Hugonnet, Young Seo Kim, Joon-Goon Kim, Moosung Lee, Taeyun Ku, YongKeun Park   +6 more
doaj   +1 more source

Locality estimates for Fresnel-wave-propagation and stability of X-ray phase contrast imaging with finite detectors

, 2018
Coherent wave-propagation in the near-field Fresnel-regime is the underlying contrast-mechanism to (propagation-based) X-ray phase contrast imaging (XPCI), an emerging lensless technique that enables 2D- and 3D-imaging of biological soft tissues and ...
Maretzke, Simon
core   +1 more source

Thermal Imaging of Nanostructures by Quantitative Optical Phase Analysis

, 2012
International audienceWe introduce an optical microscopy technique aimed at characterizing the heat generation arising from nanostructures, in a comprehensive and quantitative manner. Namely, the technique permits (i) mapping the temperature distribution
Aiguouy L., Arbouet A., Aydin D., Baffou G., Baffou G., Baffou G., Beard P., Berciaud S., Bon P., Boyer D., Celebrano M., Challener W. A., Cognet L., Dang N. C., Donner J., Eghtedari M., Gaiduk A., Govorov A. O., Guillaume Baffou, Han G., Hervé Rigneault, Jain P. K., Jin C., Julien Polleux, Julien Savatier, Lal S., Li S., Löw P., Marine Merlin, Min Zhu, Nitzan A., Pierre Bon, Pollock H. M., Ross D., Sadat S., Sade S., Serge Monneret, Thormählen I., Tikhonov A. N., Urban A., Vetrone F., Wang L.   +41 more
core   +4 more sources

Open-source implementation of polarisation-resolved single-shot differential phase contrast microscopy (pDPC) on a modular openFrame-based microscope

HardwareX
We recently demonstrated polarisation differential phase contrast microscopy (pDPC) as a robust, low-cost single-shot implementation of (semi)quantitative phase imaging based on differential phase microscopy. pDPC utilises a polarisation-sensitive camera
Huihui Liu, Sunil Kumar, Edwin Garcia, William Flanagan, Jonathan Lightley, Christopher Dunsby, Paul M.W. French   +6 more
doaj   +1 more source