Results 41 to 50 of about 6,206 (208)

Optical and Optoacoustic Imaging

open access: yes, 2020
The present chapter summarizes progress with optical methods that go beyond human vision. The focus is on two particular technologies: fluorescence molecular imaging and optoacoustic (photoacoustic) imaging. The rationale for the selection of these two methods is that in contrast to optical microscopy techniques, both fluorescence and optoacoustic ...
Razansky, Daniel, Ntziachristos, Vasilis
openaire   +9 more sources

High-precision neural stimulation by a highly efficient candle soot fiber optoacoustic emitter

open access: yesFrontiers in Neuroscience, 2022
Highly precise neuromodulation with a high efficacy poses great importance in neuroscience. Here we developed a candle soot fiber optoacoustic emitter (CSFOE), capable of generating a high pressure of over 10 MPa with a central frequency of 12.8 MHz ...
Guo Chen   +15 more
doaj   +1 more source

Improved pentamethine cyanine nanosensors for optoacoustic imaging of pancreatic cancer

open access: yesScientific Reports, 2021
Optoacoustic imaging is a new biomedical imaging technology with clear benefits over traditional optical imaging and ultrasound. While the imaging technology has improved since its initial development, the creation of dedicated contrast agents for ...
Matthew D. Laramie   +8 more
doaj   +1 more source

Hybrid Autofluorescence and Optoacoustic Microscopy for the Label-Free, Early and Rapid Detection of Pathogenic Infections in Vegetative Tissues

open access: yesJournal of Imaging, 2023
Agriculture plays a pivotal role in food security and food security is challenged by pests and pathogens. Due to these challenges, the yields and quality of agricultural production are reduced and, in response, restrictions in the trade of plant products
George J. Tserevelakis   +6 more
doaj   +1 more source

Three-dimensional optoacoustic tomography at video rate. [PDF]

open access: yes, 2012
Using optoacoustic excitation, a complete volumetric tomographic data sets from the imaged object can in principle be generated with a single interrogating laser pulse. Thus, optoacoustic imaging intrinsically has the potential for fast three-dimensional
Bühler, A.   +4 more
core   +3 more sources

Software-defined optoacoustic tomography

open access: yesApplied Optics, 2020
In this work we present what we believe is the first application of software-defined optoelectronics (SDO) for bidimensional optoacoustic tomography (OAT). The SDO concept refers to optoelectronic systems where the functionality associated with the conditioning and processing of optical and electrical signals are digitally ...
Roberto M. Insabella   +4 more
openaire   +4 more sources

Photothermal detection of trace optical absorption in water by use of visible-light-emitting diodes [PDF]

open access: yes, 1998
Visible light emitting diodes of three different colors have been used to detect an absorbing compound (potassiumpermanganate) in trace quantities in aqueous solution.
Johnson, Mark   +2 more
core   +1 more source

Transmission-reflection optoacoustic ultrasound (TROPUS) computed tomography of small animals. [PDF]

open access: yes, 2019
Rapid progress in the development of multispectral optoacoustic tomography techniques has enabled unprecedented insights into biological dynamics and molecular processes in vivo and noninvasively at penetration and spatiotemporal scales not covered by ...
Deán-Ben, Xosé Luís   +7 more
core   +1 more source

Photocontrollable Proteins for Optoacoustic Imaging [PDF]

open access: yesAnalytical Chemistry, 2019
Photocontrollable proteins revolutionized life-science imaging due to their contribution to subdiffraction-resolution optical microscopy. They might have yet another lasting impact on photo- or optoacoustic imaging (OA). OA combines optical contrast with ultrasound detection enabling high-resolution real-time in vivo imaging well-beyond the typical ...
Kanuj Mishra   +3 more
openaire   +3 more sources

Small Molecule Optoacoustic Contrast Agents: An Unexplored Avenue for Enhancing In Vivo Imaging

open access: yesMolecules, 2018
Almost every variety of medical imaging technique relies heavily on exogenous contrast agents to generate high-resolution images of biological structures.
Matt D. Laramie   +4 more
doaj   +1 more source

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