Timing Is Everything: How Subtle Timing Changes in MRI Echo Planar Imaging Can Significantly Alter Mechanical Vibrations and Sound Level. [PDF]
Magn Reson MedABSTRACT Purpose Echo‐Planar Imaging (EPI) is central to fMRI, diffusion MRI, and many dynamic clinical applications, yet rapid gradient switching induces strong mechanical vibrations, generates acoustic noise, and contributes to ghosting artifacts—effects that intensify at ultra‐high fields.
Seginer A +6 more
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Optically Generated Ultrasound for Intracoronary Imaging
Frontiers in Cardiovascular Medicine, 2020 Conventional intravascular ultrasound (IVUS) devices use piezoelectric transducers to electrically generate and receive US. With this paradigm, there are numerous challenges that restrict improvements in image quality.
Callum D. Little +13 more
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Influence of the absorber dimensions on wavefront shaping based on volumetric optoacoustic feedback [PDF]
, 2015 The recently demonstrated control over light distribution through turbid media based on real-time three-dimensional optoacoustic feedback has offered promising prospects to interferometrically focus light within scattering objects.
Dean-Ben, X. L. +3 more
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Photoacoustic detection of circulating melanoma cells in late stage patients
Journal of Innovative Optical Health Sciences, 2020 Melanoma is the deadliest skin cancer and is responsible for over 7000 deaths in the US annually. The spread of cancer, or metastasis, is responsible for these deaths, as secondary tumors interrupt normal organ function. Circulating tumor cells, or those
John A. Viator +5 more
doaj +1 more source
Advanced Science, 2023 Real‐time imaging and functional assessment of the intestinal tract and its transit pose a significant challenge to conventional clinical diagnostic methods.
Lars‐Philip Paulus +19 more
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Towards multimodal detection of melanoma thickness based on optical coherence tomography and optoacoustics [PDF]
, 2016 Melanoma skin cancer has one of the highest mortality rates of all types of cancer if not detected at an early stage. The survival rate is highly dependent on its penetration depth, which is commonly determined by histopathology.
Blumenröther, E. +6 more
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Localization optoacoustic tomography
Light: Science & Applications, 2018 AbstractLocalization-based imaging has revolutionized fluorescence optical microscopy and has also enabled unprecedented ultrasound images of microvascular structures in deep tissues. Herein, we introduce a new concept of localization optoacoustic tomography (LOT) that employs rapid sequential acquisition of three-dimensional optoacoustic images from ...
Luís Dean-Ben, X, Razansky, Daniel
openaire +4 more sources
FEM-BEM Vibroacoustic Simulations of Motion Driven Cymbal-Drumstick Interactions
Acoustics, 2023 The transient acoustic dynamics of a splash cymbal are investigated via the Finite Element Method-Boundary Element Method. Real three-dimensional motion data recorded from the interaction of drummer–drumstick–cymbal provide the initial and the loading ...
Evaggelos Kaselouris +3 more
doaj +1 more source
Peculiarities of Optoacoustic Excitation and Propagation of Plate Waves in Thin-Walled Оbjects
Приборы и методы измерений, 2023 Increasing the efficiency of non-destructive control of lamellar materials with single and double-layer structure is an urgent scientific and technical task.
A. R. Baev +4 more
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Photoacoustic generation of focused quasi-unipolar pressure pulses [PDF]
, 2010 The photoacoustic effect was employed to generate short-duration quasi-unipolar acoustic pressure pulses in both planar and spherically focused geometries.
Maslov, Konstantin +2 more
core +1 more source