Results 41 to 50 of about 4,077 (269)

Neurovascular photoacoustic tomography [PDF]

Frontiers in Neuroenergetics, 2010
Neurovascular coupling refers to the relationship between neuronal activities and downstream hemodynamic responses. Photoacoustic tomography (PAT), enabling comprehensive label-free imaging of hemodynamic activities with highly scalable penetration and spatial resolution, has great potential in the study of neurovascular coupling.
Hu, Song, Wang, Lihong V.
openaire   +4 more sources

Fiber endface photoacoustic generator for quantitative photoacoustic tomography

Optics Letters, 2021
We demonstrate a novel fiber endface photoacoustic (PA) generator using infrared (IR) 144 laser dye dispersed within an ultraviolet adhesive. The generator provides a wide acoustic bandwidth in the transducer frequency range of 2–7 MHz, high thermal conversion efficiency ( > 90 % ), good PA signal controllability (well ...
Guang Yang, Hengbo Huang, Hongbo Luo, Sitai Kou, Eghbal Amidi, Samuel Achilefu, Quing Zhu   +6 more
openaire   +3 more sources

Comparison of self-referencing techniques for photothermal detection of trace compounds in water [PDF]

, 2000
Self-referencing techniques are compared for a closed-cell photothermal detector that uses a water meniscus as a pressure sensor. Deflection of the meniscus was measured using an optical fibre Fabry–Perot interferometer.
Johnson, Mark, Jane Hodgkinson, Hodgkinson, J., Hodgkinson, Jane, Johnson, M., Dakin, J.P., Dakin, John P., Mark Johnson, John P Dakin   +8 more
core   +1 more source

Strain imaging in abdominal aortic aneurysms using bistatic dual-aperture ultrasound

Scientific Reports
Knowledge of the full geometry of abdominal aortic aneurysms (AAA) and local, mechanical wall parameters using ultrasound (US) can contribute to a better assessment of the AAA’s mechanical state, prediction of growth and possible risk of rupture. Such an
Vera H. J. van Hal, Lisanne T. F. Passier, Marc R. H. M. van Sambeek, Hans-Martin Schwab, Richard G. P. Lopata   +4 more
doaj   +1 more source

In vivo bistatic dual-aperture ultrasound imaging and elastography of the abdominal aorta

Frontiers in Physiology
Introduction: In this paper we introduce in vivo multi-aperture ultrasound imaging and elastography of the abdominal aorta. Monitoring of the geometry and growth of abdominal aortic aneurysms (AAA) is paramount for risk stratification and intervention ...
Vera H. J. van Hal, Hein de Hoop, Marc R. H. M. van Sambeek, Marc R. H. M. van Sambeek, Hans-Martin Schwab, Richard G. P. Lopata   +5 more
doaj   +1 more source

Air-Filled Bubbles Stabilized by Gold Nanoparticle/Photodynamic Dye Hybrid Structures for Theranostics

Nanomaterials, 2021
Microbubbles have already reached clinical practice as ultrasound contrast agents for angiography. However, modification of the bubbles’ shell is needed to produce probes for ultrasound and multimodal (fluorescence/photoacoustic) imaging methods in ...
Roman A. Barmin, Polina G. Rudakovskaya, Olga I. Gusliakova, Olga A. Sindeeva, Ekaterina S. Prikhozhdenko, Elizaveta A. Maksimova, Ekaterina N. Obukhova, Vasiliy S. Chernyshev, Boris N. Khlebtsov, Alexander A. Solovev, Gleb B. Sukhorukov, Dmitry A. Gorin   +11 more
doaj   +1 more source

A semi-anthropomorphic breast phantom with tunable blood oxygenation levels for use in quantitative photoacoustics [PDF]

, 2019
Photoacoustic imaging is an upcoming technique with potential in breast cancer screening and diagnosis. It is able to visualize the breast's vasculature. Its quantitative counterpart, called quantitative photoacoustics, potentially enables the derivation
Manohar, Srirang, Dantuma, Maura, Javier Ortega Julia, Ortega Julia, Javier, Srirang Manohar, Maura Dantuma   +5 more
core   +1 more source

Mitochondria‐Targeted Nanotherapies in Aging Neurodegenerative Disorders: Emerging Prospects and Clinical Potential

Advanced Healthcare Materials, EarlyView.
Mitochondria‐targeted nanotherapies emerge as a promising strategy for combating aging‐associated neurodegenerative disorders (NDs) by restoring mitochondrial function, reducing oxidative stress, and improving neuronal survival. Recent advances in nanotechnology, therapeutic delivery, and translational research are highlighted, providing insights into ...
Dnyandev G. Gadhave, Ashish B. Jadhav, Nitin B. Waghamode, Shubham Khot, Rajiya Khan, Ravi Hole, Shankar M. Dhobale, Manoj Aswar, Keshav Raj Paudel   +8 more
wiley   +1 more source

On the feasibility of ultrasound Doppler-based personalized hemodynamic modeling of the abdominal aorta

BioMedical Engineering OnLine
Background Personalized modeling is a promising tool to improve abdominal aortic aneurysm (AAA) rupture risk assessment. Computed tomography (CT) and quantitative flow (Q-flow) magnetic resonance imaging (MRI) are widely regarded as the gold standard for
Judith Fonken, Milan Gillissen, Eline van Engelen, Marc van Sambeek, Frans van de Vosse, Richard Lopata   +5 more
doaj   +1 more source

Numerical Study of Photoacoustic Pressure for Cancer Therapy

Applied Sciences, 2016
A commonly used therapy for cancer is based on the necrosis of cells induced by heating through the illumination of nanoparticles embedded in cells. Recently, the photoacoustic pressure shock induced by the illumination pulse was proved and this points ...
Thomas Grosges, Dominique Barchiesi
doaj   +1 more source