20 papers · ranked by Valyu relevance
Md Ashikuzzaman, Brandon Helfield, Hassan Rivaz
Ultrasound localization microscopy (ULM) refers to a promising medical imaging modality that systematically leverages the advantages of contrast-enhanced ultrasound (CEUS) to surpass the diffraction barrier and delineate the microvascular map. Localization and tracking of microbubbles (MBs), two significant steps of…
Zeng Zhang, Misun Hwang, Todd J. Kilbaugh, Anush Sridharan + 1 more
'Joseph Katz'] Affecting 1.1‰ of infants, hydrocephalus involves abnormal accumulation of cerebrospinal fluid, resulting in elevated intracranial pressure (ICP). It is the leading cause for brain surgery in newborns, often causing long-term neurologic disabilities or even death. Since conventional invasive ICP…
Yifei Zhu, Lingyin Jiang, Qi Zhang, Jun Yin + 12 more
'Guofeng Zhang' 'Haijun Zhang' 'Bo Ding' 'Han Lin' 'Honghui Xue' 'Xiasheng Guo' 'Xiao-Yang Zhang' 'Jing-Ning Zhu' 'Dong Zhang' 'Juan Tu' 'Ning Gu'] Ultrasound localization microscopy (ULM) is a novel imaging technique that overcomes the diffraction limit to achieve super-resolution imaging at the 10-μm scale. Despite…
Xi Chen, Matthew R. Lowerison, YiRang Shin, Yike Wang + 3 more
Ultrasound localization microscopy (ULM) enabled high-accuracy measurements of microvessel flow beyond the resolution limit of conventional ultrasound imaging by utilizing contrast microbubbles (MBs) as point targets. Robust tracking of MBs is an essential task for fast and high-quality ULM image reconstruction.…
Nathan Blanken, Jelmer M. Wolterink, Hervé Delingette, Christoph Brüne + 2 more
'Christoph Brüne' 'Michel Versluis' 'Guillaume Lajoinie'] Abstract—Recently, super-resolution ultrasound imaging with ultrasound localization microscopy (ULM) has received much attention. However, ULM relies on low concentrations of microbubbles in the blood vessels, ultimately resulting in long acquisition times.…
Byeong-Cheon Kim, Kyoungsik Chang, Sang-Wook Lee, Jaiyoung Ryu + 2 more
'Minjae Kim' 'Jaemoon Yoon'] For slow-speed ships, underwater vehicles, and pipe transportation systems, viscous resistance accounts for a large proportion of the total energy losses. As such, various technologies have been developed to reduce viscous resistance and enhance energy efficiency in these applications. Air…
Yi Xu, Siyu Luo, Yujie Wang, Liying Wang + 2 more
Microbubble cloud dynamics under short-pulse ultrasound in flowing environments remain insufficiently understood. Here, we investigate microbubble cloud behaviour in a vessel-mimicking microfluidic channel under short-pulse ultrasound (1.125 MHz) and controlled laminar flow (37.5-150 µL/min). High-speed visualization…
Hasan Ul Banna, Benjamin Mitchell, Stephen Chen, Joel Palko + 1 more
'Hiroshi Ohguro'] Imaging of the ocular vasculature can provide new insights into the pathophysiology of ocular diseases. This study proposes a novel high-frequency super-resolution ultrasound localization microscopy (SRULM) technique and evaluates its ability to measure in vivo perfusion changes in the rat eye at…
Stephen A. Lee, Alexis Leconte, Alice Wu, Joshua Kinugasa + 3 more
'Jonathan Porée' 'Andreas A. Linninger' 'Jean Provost'] The brain's microvascular cerebral capillary network plays a vital role in maintaining neuronal health, yet capillary dynamics are still not well understood due to limitations in existing imaging techniques. Here, we present Single Capillary Reporters (SCaRe) for…
Álvaro Romero-Calvo, Ömer Akay, Hanspeter Schaub, Katharina Brinkert
The absence of strong buoyancy forces severely complicates the management of multiphase flows in microgravity. Different types of space systems, ranging from in-space propulsion to life support, are negatively impacted by this effect. Multiple approaches have been developed to achieve phase separation in microgravity…
A Al Brahim, K Rajamanickam, B Lecordier, A Taylor + 1 more
A three-camera Event-Based Vision Sensor (EVS) system is employed to perform three-dimensional measurements of bubble motion, morphology, and bubbleÐbubble interactions. The multi-EVS configuration mitigates the absence of direct depth information inherent to binary event-based imaging while preserving key advantages…
Marco Cattaneo, Giulia Guerriero, Gazendra Shakya, Lisa A. Krattiger + 3 more
'Lorenza Garau Paganella' 'Maria Narciso' 'Outi Supponen'] The pursuit of targeted therapies capable of overcoming biological barriers, including the tenacious blood-brain barrier, has spurred the investigation into stimuli-responsive microagents. This approach could improve therapeutic efficacy, reduce undesirable…
Changsheng Chen, Hongguang Zhang, Xianren Zhang
In our previous work [Phys. Chem. Chem. Phys. 2022, 24, 9685], we show with molecular dynamics simulations that bulk nanobubbles can be stabilized by forming a compressed amphiphile monolayer at bubble interfaces. This observation closely resembles the stability origin of microemulsions and inspires us to propose here…
Luca Johannes Schlotheuber, Michael Vollenweider, Sven Gutjahr, Tiago Hungerland + 6 more
Single-cell analysis is essential for uncovering heterogeneous biological functions that arise from intricate cellular interaction. Microfluidic droplet arrays enable precise dynamic data collection through cell encapsulation in picoliter volumes. The time-lapse imaging of these arrays can reveal functional kinetics…
Priya Soneji, Elio J. Challita, M. Saad Bhamla
Cells and microorganisms are motile, yet the stationary nature of conventional microscopes impedes comprehensive, long-term behavioral and biomechanical analysis. The limitations are twofold: a narrow focus permits high-resolution imaging but sacrifices the broader context of organism behavior, while a wider focus…
Oliver J. Meacock, William M. Durham
Most bacteria live attached to surfaces in densely-packed communities^1,2^. While new experimental and imaging techniques are beginning to provide a window on the complex processes that play out in these communities, resolving the behaviour of individual cells through time and space remains a major challenge. Although…
Qiyang Chen, Fang-Wei Liu, Sung Kwon Cho, Kang Kim
Maneuverable microswimmers/microdrones that navigate in hard-to-reach spaces inside human bodies hold a great potential for various biomedical applications. Acoustically actuated microswimmers have already demonstrated feasibility. However, for eventual translation of this technology, a robust 3-D tracking strategy for…
Authors not listed
This study presents the use of laser-driven microbubbles for micro-patterning Ti3C2TX MXenes on flexible polyethylene terephthalate films, yielding conductive micropatterns without the need for pre- or post-processing. Characterization of the electrical properties under varying strain conditions revealed distinct…
Anastasia Niver, Kevin D. Welsher
Despite successes in tracking single molecules in vitro, the extension of active-feedback single-particle methods to tracking rapidly diffusing and unconfined proteins in live cells has not been realized. Since existing active-feedback localization methods localize particles in real time assuming zero background, they…
Shahid Ullah Khan, Muhammad Safdar, Janne Janis
We demonstrate in detail the use of self-propelling manganese oxide (MnO2) microparticles for water remediation. The particles exhibit removal of organic dyestuff from water following chemical degradation and adsorptive bubble separation mechanisms. The effect of various parameters such as dye concentration…