Results 41 to 50 of about 13,377,581 (358)
Accelerated High-Resolution Photoacoustic Tomography via Compressed Sensing [PDF]
, 2016 Current 3D photoacoustic tomography (PAT) systems offer either high image quality or high frame rates but are not able to deliver high spatial and temporal resolution simultaneously, which limits their ability to image dynamic processes in living tissue.
Arridge, Simon +7 more
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Mitigation of artifacts due to isolated acoustic heterogeneities in photoacoustic computed tomography using a variable data truncation-based reconstruction method [PDF]
, 2017 Photoacoustic computed tomography (PACT) is an emerging computed imaging modality that exploits optical contrast and ultrasonic detection principles to form images of the absorbed optical energy density within tissue.
Anastasio, Mark A. +4 more
core +2 more sources
Simulation model for the evaluation and design of miniaturized non-resonant photoacoustic gas sensors [PDF]
Journal of Sensors and Sensor Systems, 2016 This publication reports the derivation and the implementation of a simulation model that describes non-resonant photoacoustic gas sensors. The photoacoustic effect is modelled in detail for the successive steps of radiation emission, stimulation of ...
J. Huber, K. Schmitt, J. Wöllenstein
doaj +1 more source
Frontiers in Bioengineering and Biotechnology, 2023 Translatable imaging agents are a crucial element of successful molecular imaging. Photoacoustic molecular imaging relies on optical absorbing materials to generate a sufficient signal.
Shensheng Zhao +11 more
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Effects of skin tone on photoacoustic imaging and oximetry
Journal of Biomedical Optics, 2023 Photoacoustic imaging (PAI) provides contrast based on the concentration of optical absorbers in tissue, enabling the assessment of functional physiological parameters such as blood oxygen saturation (sO2). Recent evidence suggests that variation in melanin levels in the epidermis leads to measurement biases in optical technologies, which could ...
Else, Thomas R +5 more
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Cylindrical illumination with angular coupling for whole-prostate photoacoustic tomography [PDF]
, 2019 Current diagnosis of prostate cancer relies on histological analysis of tissue samples acquired by biopsy, which could benefit from real-time identification of suspicious lesions.
Bungart, Brittani +9 more
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Journal of Biomedical Photonics & Engineering, 2020 The most important task in the field of medical diagnostics is the creation and application of new diagnostic tools and methods, as well as diagnosis of physiological processes.
Denis A. Kravchuk, Ksenia A. Voronina
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Photonics, 2022 Photoacoustic spectroscopy (PAS) has received extensive attention in optical gas sensing due to the advantages of high sensitivity, gas selectivity, and online detection.
Zuying Xu +10 more
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Approximate k-space models and Deep Learning for fast photoacoustic reconstruction [PDF]
, 2018 We present a framework for accelerated iterative reconstructions using a fast and approximate forward model that is based on k-space methods for photoacoustic tomography. The approximate model introduces aliasing artefacts in the gradient information for
Arridge, Simon +6 more
core +2 more sources
Photoacoustic effect as a liquid absorbance detector [PDF]
Applied Optics, 1980 A theoretical treatment of the photoacoustic effect for a liquid enclosed in a cylindrical cell is given. Simple analytical expressions for the photoacoustic signal are derived for cw and pulse modulation schemes. Modulation frequency or pulse width dependence of the photoacoustic signal is discussed.
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