Results 111 to 120 of about 4,077 (269)
Tissue Optics and Photonics: Light-Tissue Interaction II
Journal of Biomedical Photonics & Engineering, 2016 This is the third part of the review-tutorial paper describing fundamentals of tissue optics and photonics. The first part of the paper was mostly devoted to description of tissue structures and their specificity related to interactions with light [1 ...
Valery V. Tuchin
doaj +1 more source
Modulated resonant versus pulsed resonant photoacoustics intrace gas detection [PDF]
, 2018 Modulated resonant photoacoustics is a sensitive technique widely used for trace gas sensing. Generally, a continuous-wave laser is modulated at a frequency corresponding to an acoustic resonance of a photoacoustic cell.
Kaučikas, M., Sigrist, M., Bartlome, R.
core
FlexMat, EarlyView.This review organizes flexible wearable electronics for cardiovascular monitoring into four interconnected information layers: surface electrophysiology, hemodynamic sensing, vascular imaging, and biofluid biomarker analysis. This framework clarifies how electrical rhythm, vascular loading, structural and flow‐related features, and biochemical states ...
Qiao Chen +5 more
wiley +1 more source
Information &Functional Materials, EarlyView.Piezoelectric materials are reviewed as active platforms for medical ultrasound, bridging electromechanical fundamentals, transducer architectures, and biomedical applications. Material–device co‐design is emphasized as the key to high‐performance diagnosis, therapy, monitoring, wearable ultrasound, and emerging ultrasound‐responsive functions ...
Jianan Li, Qing Wan
wiley +1 more source
Photoacoustics: An acoustic method for trace gas measurements
, 2022 S.505-506, Paper 000436The photoacoustic (or optoacoustic) effect, the generation of sound by the absorption of pulsed or modulated light has been known since the famous experiments of Alexander Graham Bell in 1880.
Angelmahr, M., Miklós, A., Angster, J.
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Laser photoacoustics: a novel method for ethylene determination in plant physiological studies.
, 1989 A CO2 laser-based photoacoustic method was used to determine the initial changes in ethylene production following emasculation of selected orchid species.
Harren, F., Bicanic, D.D., Woltering, E.
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Interdisciplinary Medicine, EarlyView.The graphical abstract outlines a novel multifunctional ultrasound contrast agent for the diagnosis and treatment of ischemic diseases, along with innovative strategies to enhance its targeting efficiency. Abstract Ischemic diseases, such as myocardial infarction, stroke, and peripheral ischemia, are leading causes of death and disability worldwide ...
Yangyang Zhou +3 more
wiley +1 more source
Application of pulsed photoacoustics in water at high pressure
, 1999 The effectiveness of pulsed laser photoacoustics in the spectral analysis of water at high pressures is studied. The pulsed photoacoustic response from distilled water at 20 °C for a range of pressures from 1-350 bars is considered.
Hannigan, John +2 more
core
, 1986 Part of the plasma power losses in magnetic-confinement-based nuclear-fusion devices is deposited on limiters or divertor targets. This part can be deduced quantitatively from time- and space-resolved infrared (IR) surface-temperature measurements at ...
B. K. Bein
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Optimized Coherence Masking Improves Ultrasound Imaging of Kidney Cysts
Journal of Ultrasound in Medicine, EarlyView.Objectives Renal cystic lesions are exceedingly common and typically benign, though accurate diagnostic techniques are required to recognize the subset of malignant lesions that require timely intervention. Ultrasound (US) is the preferred first line test for renal cyst evaluation because it is safe, widely accessible, and low cost. US imaging, however,
Scott Schoen Jr +12 more
wiley +1 more source