We report on a resonant acoustic radiation force optical coherence elastography (ARF-OCE) technique that uses mechanical resonant frequency to characterize and identify tissues of different types. The linear dependenc...
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We report on a resonant acoustic radiation force optical coherence elastography (ARF-OCE) technique that uses mechanical resonant frequency to characterize and identify tissues of different types. The linear dependency of the resonant frequency on the square root of Young's modulus was validated on silicone phantoms. Both the frequency response spectrum and the 3D imaging results from the agar phantoms with hard inclusions confirmed the feasibility of deploying the resonant frequency as a mechanical contrast for tissue imaging. Furthermore, the results of resonant ARF-OCE imaging of a post-mortem human coronary artery with atherosclerosis demonstrate the potential of the resonant ARF-OCE as a non-invasive method for imaging and characterizing vulnerable plaques. (C) 2013 AIP Publishing LLC.
Leo Esaki, John Heer; Direct Determination of the Scattering Time in Bismuth and Antimony‐Bismuth Crystals at Low Temperatures, Journal of Applied Physics, Volu
Leo Esaki, John Heer; Direct Determination of the Scattering Time in Bismuth and Antimony‐Bismuth Crystals at Low Temperatures, Journal of Applied Physics, Volu
The COVID-19 pandemic resulted in an unprecedented and unexpected challenge for societies and healthcare systems, including nuclear medicine providers. This article summarizes the major events imposed on nuclear medic...
The COVID-19 pandemic resulted in an unprecedented and unexpected challenge for societies and healthcare systems, including nuclear medicine providers. This article summarizes the major events imposed on nuclear medicine by COVID-19 from a global perspective, focuses on the major lessons learned regarding attitude, medical procedures, organizational implications and strategical considerations, and then discusses what to expect (and how to prepare) for the future. While the look back to what has happened is clearly evidence based, the look ahead and the conclusions drawn require the disclaimer of only representing the personal opinion and prediction of the authors. The COVID-19 pandemic relentlessly revealed deficiencies on an organizational, systematic and leadership level in nuclear medicine and beyond. Crisis gives us the opportunity to learn and furthermore perpare for the future. The authors' take home messages include the recommendation to focus on developing a culture of responsibility and ownership as opposed to blame, strengthening teams and communication, adapting existing structures based on the lessons learned during COVID-19, as well as establishing an environment of active decision making, prioritizing proposal of solutions rather than simply stating problems, incentivizing support and collaboration, not opposition. (C) 2021 Elsevier Inc. All rights reserved.
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