Results 11 to 20 of about 989,563 (206)
In vivo optical-resolution photoacoustic computed tomography with compressed sensing [PDF]
Optics Letters, 2012 Optical-resolution photoacoustic microscopy is becoming a powerful research tool for studying microcirculation in vivo. Moreover, ultrasonic-array-based optical-resolution photoacoustic computed tomography (OR-PACT), providing comparable resolution at an improved speed, has opened up new opportunities for studying microvascular dynamics. In this Letter,
Lihong Wang, Jing Meng, Dong Liang
exaly +6 more sources
Dual-frequency fiber-array photoacoustic computed tomography for high-resolution deep brain imaging [PDF]
Light: Science & ApplicationsPhotoacoustic tomography as an optical-ultrasound hybrid imaging modality provides rich optical contrast over the extended penetration depth of biological tissues, enabling multiscale multicontrast structural and functional imaging.
Zitao Chen +6 more
doaj +2 more sources
Spatiotemporal Antialiasing in Photoacoustic Computed Tomography. [PDF]
IEEE Trans Med Imaging, 2020 Photoacoustic computed tomography (PACT) based on a full-ring ultrasonic transducer array is widely used for small animal wholebody and human organ imaging, thanks to its high in-plane resolution and full-view fidelity. However, spatial aliasing in full-ring geometry PACT has not been studied in detail.
Hu P, Li L, Lin L, Wang LV.
europepmc +7 more sources
Tutorial on Photoacoustic Microscopy and Computed Tomography [PDF]
IEEE Journal of Selected Topics in Quantum Electronics, 2008 The field of photoacoustic tomography has experienced considerable growth in the past few years. Although several commercially available pure optical imaging modalities, including confocal microscopy, two-photon microscopy, and optical coherence tomography, have been highly successful, none of these technologies can provide penetration beyond ~1 mm ...
Lihong Wang
exaly +3 more sources
Applied Sciences, 2019 A low-cost Photoacoustic Computed Tomography (PACT) system consisting of 16 single-element transducers has been developed. Our design proposes a fast rotating mechanism of 360o rotation around the imaging target, generating comparable images to those ...
Mohsin Zafar +3 more
doaj +3 more sources
Light-Emitting-Diode-Based Multispectral Photoacoustic Computed Tomography System
Sensors, 2019 Photoacoustic computed tomography (PACT) has been widely explored for non-ionizing functional and molecular imaging of humans and small animals. In order for light to penetrate deep inside tissue, a bulky and high-cost tunable laser is typically used ...
Sumit Agrawal +7 more
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Combating acoustic heterogeneity in photoacoustic computed tomography: A review [PDF]
Journal of Innovative Optical Health Sciences, 2020 Based on the energy conversion of light into sound, photoacoustic computed tomography (PACT) is an emerging biomedical imaging modality and has unique applications in a range of biomedical fields.
Tong Wang, Wen Liu, Chao Tian
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Generalized spatial coherence reconstruction for photoacoustic computed tomography. [PDF]
J Biomed Opt, 2021 Coherence, a fundamental property of waves and fields, plays a key role in photoacoustic image reconstruction. Previously, techniques such as short-lag spatial coherence (SLSC) and filtered delay, multiply, and sum (FDMAS) have utilized spatial coherence to improve the reconstructed resolution and contrast with respect to delay-and-sum (DAS).
Tordera Mora J +4 more
europepmc +4 more sources
Non-invasive photoacoustic computed tomography of rat heart anatomy and function [PDF]
Light: Science & Applications, 2023 High-speed non-invasive photoacoustic tomography reveals cardiac anatomy and cardiovascular hemodynamics in rats.
Li Lin +7 more
doaj +2 more sources
In Vivo Rodent Cervicothoracic Vasculature Imaging Using Photoacoustic Computed Tomography
Photonics, 2021 Mice and rats are rodent specimens commonly used in multidisciplinary research. Specifically, vasculature imaging of rodents has been widely performed in preclinical studies using various techniques, such as computed tomography, magnetic resonance ...
Junsoo Lee +9 more
doaj +3 more sources