Results 171 to 180 of about 4,310 (200)

Optoacoustic Imaging for Ophthalmology

Hybrid and Novel Imaging and New Optical Instrumentation for Biomedical Applications, 2001
The feasibility of optoacoustic imaging was investigated for ophthalmologic application in the treatment of glaucoma. Difficulties in the treatment with laser cyclophotocoagulation are mainly due to uncertainties in the localization of the ciliary body.
Uwe Oberheide, Birte Jansen, Ingo Bruder, Holger Lubatschowski, Herbert Welling, Wolfgang Ertmer   +5 more
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[Optoacoustic imaging].

Der Radiologe, 2016
Imaging modalities play an increasing role in today's medical diagnostics. Among them, ultrasound (US) is one the most widespread techniques although it has relatively poor soft tissue contrast. Furthermore, US is poorly suited as a modality for molecular imaging (MI).Methods such as Doppler and contrast-enhanced US (CEUS) allow functional imaging of ...
M, Fournelle, S, Tretbar
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Iterative reconstruction algorithm for optoacoustic imaging

The Journal of the Acoustical Society of America, 2002
Optoacoustic imaging is based on the generation of thermoelastic stress waves by heating an object in an optically heterogeneous medium with a short laser pulse. The stress waves contain information about the distribution of structures with preferential optical absorption.
G, Paltauf, J A, Viator, S A, Prahl, S L, Jacques   +3 more
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Imaging with the optoacoustic effect

Optics & Laser Technology, 1980
Abstract Optoacoustic imaging is a new technique with unusual features. It allows not only optical imaging, but also imaging of thermal structures on and in the sample. With optical radiation, images are produced from sample depths exceeding the optical penetration depth by several orders of magnitude. The resolution of, at present, about 7μm reveals
openaire   +1 more source

Multimodal Optoacoustic Imaging

2018
Optical imaging is one of the oldest and most frequently used imaging techniques. Even though the first optical imaging device, the light microscope, has been invented around 1590, the human eye has served the same purpose for centuries before that. With the advent of new technologies, such as efficient electronics, powerful lasers, sensitive detectors,
Murad Omar, Dominik Soliman, Vasilis Ntziachristos   +2 more
openaire   +1 more source

Optoacoustic Imaging of Adult Zebrafish

Biomedical Optics and 3-D Imaging, 2010
Adult zebrafish is an important model organism not accessible by current optical imaging methods due to intense light scattering. Here selective-plane optoacoustic tomography yields high resolution whole-body reconstructions of the animal at late developmental stages.
Daniel Razansky, Martin Distel, Rui Ma, Reinhard Koster, Vasilis Ntziachristos   +4 more
openaire   +1 more source

Optoacoustic imaging of blood vessels

SPIE Proceedings, 2007
Optoacoustic imaging, a novel noninvasive modality, combines the advantages of optical methods and the ultrasound technique. The optoacoustic technique is based on tissue irradiation with nanosecond laser pulses and detection of ultrasound waves generated due to thermo-elastic expansion.
I. Patrikeev, H.-P. Brecht, Y. Y. Petrov, I. Y. Petrova, D. S. Prough, R. O. Esenaliev   +5 more
openaire   +1 more source

Optical and Optoacoustic Imaging in the Diffusive Regime

2014
Optical imaging is capable of providing valuable molecular contrast, cell tracking, genetic reporters, and a wide range of biomarkers that reveal the biological processes underlying a disease. For centuries, optical imaging has primarily been confined to superficial tissue layers, due to the high scattering of photons in tissue.
Taruttis, A., Ntziachristos, V.
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Reconstruction techniques for optoacoustic imaging

SPIE Proceedings, 2001
Optoacoustics is a method to gain information from inside a tissue. This is done by irradiating a tissue with a short light pulse, which generates a pressure distribution inside the tissue that mirrors the absorber distribution. The pressure distribution measured on the tissue-surface allows, by applying a back-projection method, to calculate a ...
Martin Frenz, Kornel P. Koestli, Guenther Paltauf, Heinz Schmidt-Kloiber, Heinz P. Weber   +4 more
openaire   +1 more source

Multimodal biomedical optoacoustic imaging

Conference on Lasers and Electro-Optics, 2016
Optoacoustic imaging is a promising non-ionizing hybrid imaging modality combining high optical contrast and spectroscopic-based specificity of optical imaging with the high spatial resolution of ultrasound and speed of sound imaging.
M. Jaeger, K.G. Held, H.G. Akarcay, M. Frenz   +3 more
openaire   +1 more source