Results 21 to 30 of about 26,357 (239)
Bone Chemical Composition Analysis Using Photoacoustic Technique [PDF]
Frontiers in Physics, 2020 Photoacoustic (PA) signal analysis based on ultrasonic wave detection can provide both high-sensitivity optical contrast information and micro-architectural information which is highly related with the chemical composition of tissue. In this study, the feasibility assessment of bone composition assessment was investigated using the multi-wavelength PA ...
Ting Feng +6 more
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Photoacoustic and fluorescence lifetime imaging of diatoms
Photoacoustics, 2020 Photoacoustic and fluorescent methods are used intensely in biology and medicine. These approaches can also be used to investigate unicellular diatom algae that are extremely important for Earth’s ecology.
Julijana Cvjetinovic +8 more
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Synthetic aperture focusing technique for photoacoustic endoscopy
Optics Express, 2017 Photoacoustic endoscopy (PAE) is a promising tool for the detection of atherosclerotic plaque. In this work, we propose a novel design of a side-viewing PAE probe based on a synthetic aperture focusing technique (SAFT) to enable high transverse resolution over large depth of focus (DOF) along the radial direction.
De, Cai +5 more
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Clinical photoacoustic imaging of cancer [PDF]
Ultrasonography, 2016 Photoacoustic imaging is a hybrid technique that shines laser light on tissue and measures optically induced ultrasound signal. There is growing interest in the clinical community over this new technique and its possible clinical applications. One of the
Keerthi S. Valluru, Juergen K. Willmann
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Photoacoustic correlation technique for low-speed flow measurement [PDF]
SPIE Proceedings, 2010 A photoacoustic correlation spectroscopy (PACS) technique was proposed for the first time. This technique is inspired by its optical counterpart-the fluorescence correlation spectroscopy (FCS), which is widely used in the characterization of the dynamics of fluorescent species.
Sung-Liang, Chen +5 more
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Photoacoustic Tomography in a Rectangular Reflecting Cavity [PDF]
, 2013 Almost all known image reconstruction algorithms for photoacoustic and thermoacoustic tomography assume that the acoustic waves leave the region of interest after a finite time.
Cox, B. T., Holman, B., Kunyansky, L.
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Biosensors, 2022 The photoacoustic (PA) effect occurs when sound waves are generated by light according to the thermodynamic and optical properties of the materials; they are absorption spectroscopic techniques that can be applied to characterize materials that absorb ...
Unsang Jung, Jaemyung Ryu, Hojong Choi
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On the Adjoint Operator in Photoacoustic Tomography [PDF]
, 2016 Photoacoustic Tomography (PAT) is an emerging biomedical "imaging from coupled physics" technique, in which the image contrast is due to optical absorption, but the information is carried to the surface of the tissue as ultrasound pulses. Many algorithms
Arridge, Simon R. +4 more
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Recent Advances in QEPAS and QEPTS Based Trace Gas Sensing: A Review
Frontiers in Physics, 2020 This invited review paper summarizes and discusses developments of QTF based state-of-the-art quartz-enhanced photoacoustic spectroscopy (QEPAS) and quartz-enhanced photothermal spectroscopy (QEPTS) gas sensing techniques over the past 3 years.
Yufei Ma
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Whole-Body Photoacoustic Imaging Techniques for Preclinical Small Animal Studies
Sensors, 2022 Photoacoustic imaging is a hybrid imaging technique that has received considerable attention in biomedical studies. In contrast to pure optical imaging techniques, photoacoustic imaging enables the visualization of optical absorption properties at deeper
Hyunjun Kye +4 more
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