Results 71 to 80 of about 25,478 (173)

Non-invasive imaging of microcirculation: a technology review

Medical Devices: Evidence and Research, 2014
Sam Eriksson,1,2 Jan Nilsson,1,2 Christian Sturesson1,2 1Department of Surgery, Clinical Sciences Lund, Lund University, 2Skåne University Hospital, Lund, Sweden Abstract: Microcirculation plays a crucial role in physiological processes of tissue ...
Eriksson S, Nilsson J, Sturesson C
doaj  

Particle sizing in rocket motor studies utilizing hologram image processing [PDF]

, 1987
A technique of obtaining particle size information from holograms of combustion products is described. The holograms are obtained with a pulsed ruby laser through windows in a combustion chamber.
Netzer, David, Powers, John
core   +1 more source

Laser Speckle Contrast Imaging of Skin Changes in Arteriovenous Malformation [PDF]

Circulation: Cardiovascular Imaging, 2017
Laser speckle contrast imaging of skin changes in arteriovenous malformation.
Humeau-Heurtier, Anne, Martin, Ludovic, Bazeries, Paul, Abraham, Pierre, Henni, Samir   +4 more
openaire   +3 more sources

Use of Laser Speckle Contrast Imaging for Successful Fingertip Replantation

Plastic and Reconstructive Surgery, Global Open, 2018
Summary:. Fingertip replantation is a technical challenge for microsurgeons. For successful fingertip replantation, it is important to monitor the replanted fingertip vascularity for the early detection and revision of vascular compromise.
Ryo Karakawa, MD, Tomoyuki Yano, MD, PhD, Hidehiko Yoshimatsu, MD, Mitsunobu Harima, MD, Koji Kanayama, MD, PhD, Takuya Iida, MD, PhD, Masayuki Sawaizumi, MD, PhD   +6 more
doaj   +1 more source

Handheld laser speckle contrast perfusion imaging [PDF]

, 2021
Laser speckle contrast imaging (LSCI) is a noninvasive method for evaluation of microcirculatory blood flow. LSCI has a broad medical application such as reconstructive surgery, burns and dermatology. Commercially available LSCI systems are bulky and operate in mounted modality.
openaire   +1 more source

Imaging of transient phenomena with low coherence lasers comprising arrays of independent microbeams: A laser version of Harold Edgerton’s stroboscope

APL Photonics, 2022
A longstanding barrier to laser imaging with high spatial and temporal resolution is speckle, the granular interference pattern arising from the coherent interaction of laser radiation with the topography of an illuminated surface.
Austin W. Steinforth, José A. Rivera, J. Gary Eden   +2 more
doaj   +1 more source

Influence of laser spot size at diffuser plane on the longitudinal spatial coherence function of optical coherence microscopy system

, 2019
Coherence properties and wavelength of light sources are indispensable for optical coherence microscopy/tomography as they greatly influence the signal to noise ratio, axial resolution, and penetration depth of the system.
Ahmad, Azeem, Butola, Ankit, Dubey, Vishesh, Joshi, Rakesh, Mehta, Dalip Singh, Usmani, Kashif   +5 more
core   +1 more source

Optical correlation techniques for the investigation of colloidal systems

, 2013
This review aims to provide a simple introduction to the application of optical correlation methods in colloidal science. In particular, I plan to show that full appraisal of the intimate relation between light scattering and microscopy allows designing ...
Adrian, Alaimo, Alaimo, Armstrong, Barnhart, Baumgartl, Berne, Born, Brambilla, Buzzaccaro, Cerbino, Cerbino, Chu, Cipelletti, Duri, Duri, Gatti, Giavazzi, Giglio, Giglio, Goodman, Goodman, Goodman, Han, Kubo, Lindken, Loudon, Mertz, Nemoto, Pusey, Pusey, Pusey, Raman, Rička, Secchi, Streibl, van de Hulst   +36 more
core   +1 more source

Correcting speckle contrast at small speckle size to enhance signal to noise ratio for laser speckle contrast imaging

Optics Express, 2013
In laser speckle contrast imaging, it was usually suggested that speckle size should exceed two camera pixels to eliminate the spatial averaging effect. In this work, we show the benefit of enhancing signal to noise ratio by correcting the speckle contrast at small speckle size.
Jianjun, Qiu, Yangyang, Li, Qin, Huang, Yang, Wang, Pengcheng, Li   +4 more
openaire   +2 more sources

Blind Ghost Imaging

, 2018
Ghost imaging is an unconventional optical imaging technique that reconstructs the shape of an object combining the measurement of two signals: one that interacted with the object, but without any spatial information, the other containing spatial ...
Bertolotti, Jacopo, Carminati, Rémi, Fayard, Nikos, Goetschy, Arthur, Paniagua-Diaz, Alba M., Pierrat, Romain, Starshynov, Ilya   +6 more
core   +3 more sources