Real-time volumetric lipid imaging in vivo by intravascular photoacoustics at 20 frames per second [PDF]
, 2017 Lipid deposition can be assessed with combined intravascular photoacoustic/ultrasound (IVPA/US) imaging. To date, the clinical translation of IVPA/US imaging has been stalled by a low imaging speed and catheter complexity.
Beusekom, H.M.M. (Heleen) van +8 more
core +1 more source
Design of ultrafast laser-driven microactuator based on photoacoustic mechanism
Optics Express, 2015 In this work, an ultrafast laser-driven microactuator based on the photoacoustic mechanism was proposed with large amplitude and high response frequency. The microactuator was fabricated by LIGA technology. The displacement of the microactuator could be up to 11 μm at resonance state when the repeat frequency was around 14 kHz using a nanosecond pulse ...
F H, Li +6 more
openaire +2 more sources
NeuroImage, 2021 Revealing the structural and functional change of microvasculature is essential to match vascular response with neuronal activities in the investigation of neurovascular coupling. The increasing use of rhesus models in fundamental and clinical studies of neurovascular coupling presents an emerging need for a new imaging modality.
Wei Qin +6 more
openaire +3 more sources
Quantitative photoacoustic imaging: correcting for heterogeneous light fluence distributions using diffuse optical tomography [PDF]
, 2011 The specificity of molecular and functional photoacoustic (PA) images depends on the accuracy of the photoacoustic absorption spectroscopy. The PA signal is proportional to the product of the optical absorption coefficient and local light fluence ...
Bauer, Adam Q. +4 more
core +1 more source
Photoacoustic effect measurement in aqueous suspensions of gold nanorods caused by low-frequency and low-power near-infrared pulsing laser irradiation [PDF]
, 2013 When aqueous suspensions of gold nanorods are irradiated with a pulsing laser (808 nm), pressure waves appear even at low frequencies (pulse repetition rate of 25 kHz).
Fernández Caballero, Carlos +4 more
core +3 more sources
Characterisation of a phantom for multiwavelength quantitative photoacoustic imaging [PDF]
, 2016 Quantitative photoacoustic imaging (qPAI) has the potential to provide high- resolution in vivo images of chromophore concentration, which may be indicative of tissue function and pathology.
Beard, PC +3 more
core +1 more source
Formation and dissolution of microbubbles on highly-ordered plasmonic nanopillar arrays [PDF]
, 2015 Bubble formation from plasmonic heating of nanostructures is of great interest in many applications. In this work, we study experimentally the intrinsic effects of the number of three-dimensional plasmonic nanostructures on the dynamics of microbubbles ...
Bao, Lei +4 more
core +3 more sources
Open photoacoustic cell for concentration measurements in rapidly flowing gas [PDF]
, 2023 High temporal resolution concentration measurements in rapid gas flows pose a serious challenge for most analytical instruments. The interaction of such flows with solid surfaces can generate excessive aero-acoustic noise making the application of the ...
Balogh Miklós +7 more
core +1 more source
Full-view LED-based optoacoustic tomography [PDF]
, 2023 Optoacoustic tomography is commonly performed with bulky and expensive short-pulsed solid-state lasers providing high per-pulse energies in the millijoule range.
Deán-Ben, Xosé Luís +5 more
core +1 more source
Quartz-enhanced photoacoustic spectroscopy exploiting low-frequency tuning forks as a tool to measure the vibrational relaxation rate in gas species [PDF]
, 2021 We demonstrated that quartz-enhanced photoacoustic spectroscopy (QEPAS) is an efficient tool to measure the vibrational relaxation rate of gas species, employing quartz tuning forks (QTFs) as sound detectors.
Dello Russo, Stefano +9 more
core +4 more sources