Results 31 to 40 of about 1,367 (154)

A sparse deep learning approach for automatic segmentation of human vasculature in multispectral optoacoustic tomography

Photoacoustics, 2020
Multispectral Optoacoustic Tomography (MSOT) resolves oxy- (HbO2) and deoxy-hemoglobin (Hb) to perform vascular imaging. MSOT suffers from gradual signal attenuation with depth due to light-tissue interactions: an effect that hinders the precise manual ...
Nikolaos-Kosmas Chlis, Angelos Karlas, Nikolina-Alexia Fasoula, Michael Kallmayer, Hans-Henning Eckstein, Fabian J. Theis, Vasilis Ntziachristos, Carsten Marr   +7 more
doaj   +1 more source

Contrast‐Enhanced Multispectral Optoacoustic Tomography for Functional Assessment of the Gastrointestinal Tract

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, Adrian Buehler, Alexandra L. Wagner, Roman Raming, Jörg Jüngert, David Simon, Koray Tascilar, Alexander Schnell, Ulrich Rother, Markus Eckstein, Werner Lang, André Hoerning, Georg Schett, Markus F. Neurath, Maximilian J. Waldner, Regina Trollmann, Joachim Woelfle, Sarah E Bohndiek, Adrian P. Regensburger, Ferdinand Knieling   +19 more
doaj   +1 more source

In vivo tracking of orally-administered particles within the gastrointestinal tract of murine models using multispectral optoacoustic tomography

Photoacoustics, 2019
While particle carriers have potential to revolutionize disease treatment, using these carriers requires knowledge of spatial and temporal biodistribution.
Neal Bhutiani, Abhilash Samykutty, Kelly M. McMasters, Nejat K. Egilmez, Lacey R. McNally   +4 more
doaj   +1 more source

Precision of handheld multispectral optoacoustic tomography for muscle imaging

Photoacoustics, 2021
Photo-or optoacoustic imaging (OAI) allows quantitative imaging of target tissues. Using multi-wavelength illumination with subsequent ultrasound detection, it may visualize a variety of different chromophores at centimeter depth.
Alexandra L. Wagner, Vera Danko, Anna Federle, Daniel Klett, David Simon, Rafael Heiss, Jörg Jüngert, Michael Uder, Georg Schett, Markus F. Neurath, Joachim Woelfle, Maximilian J. Waldner, Regina Trollmann, Adrian P. Regensburger, Ferdinand Knieling   +14 more
doaj   +1 more source

Multispectral optoacoustic tomography of lipid and hemoglobin contrast in human carotid atherosclerosis

Photoacoustics, 2021
Several imaging techniques aim at identifying features of carotid plaque instability but come with limitations, such as the use of contrast agents, long examination times and poor portability.
Angelos Karlas, Michael Kallmayer, Michael Bariotakis, Nikolina-Alexia Fasoula, Evangelos Liapis, Fabien Hyafil, Jaroslav Pelisek, Moritz Wildgruber, Hans-Henning Eckstein, Vasilis Ntziachristos   +9 more
doaj   +1 more source

Upconversion Nanoparticle-Covalent Organic Framework Core-shell Particles as Therapeutic Microrobots Trackable With Optoacoustic Imaging. [PDF]

Adv Mater
Upconversion nanoparticle‐covalent organic framework core–shell particles provide enhanced contrast for optoacoustic imaging by leveraging the optical absorption of upconversion luminescence within the covalent organic framework matrix. Beyond their role as contrast agents, these particles enable customizable therapeutic agent loading and release, as ...
Kim DW, Wrede P, Rodríguez-Camargo A, Chen Y, Dogan NO, Glück C, Lotsch BV, Razansky D, Sitti M.   +8 more
europepmc   +2 more sources

Effectiveness of a Modified Lifestyle-Integrated Functional Exercise Program in Residential Retirement Communities—A Pilot Study

SAGE Open Nursing, 2018
Aims This study explored the effectiveness of a modified Lifestyle-integrated Functional Exercise program for increasing community-dwelling older adults’ lower body strength and balance to decrease fall risk.
Kitsum Li OTD, Kayla Comer MSOT, Tiffany Huang MSOT, Kelly Schmidt MSOT, Matthew Tong MSOT   +4 more
doaj   +1 more source

Skeletal muscle optoacoustics reveals patterns of circulatory function and oxygen metabolism during exercise

Photoacoustics, 2023
Imaging skeletal muscle function and metabolism, as reported by local hemodynamics and oxygen kinetics, can elucidate muscle performance, severity of an underlying disease or outcome of a treatment.
Angelos Karlas, Nikolina-Alexia Fasoula, Nikoletta Katsouli, Michael Kallmayer, Sabine Sieber, Sebastian Schmidt, Evangelos Liapis, Martin Halle, Hans-Henning Eckstein, Vasilis Ntziachristos   +9 more
doaj   +1 more source

Recurrent and convolutional neural networks for sequential multispectral optoacoustic tomography (MSOT) imaging

Journal of Biophotonics, 2023
AbstractMultispectral optoacoustic tomography (MSOT) is a beneficial technique for diagnosing and analyzing biological samples since it provides meticulous details in anatomy and physiology. However, acquiring high through‐plane resolution volumetric MSOT is time‐consuming.
Aniwat Juhong, Bo Li, Yifan Liu, Cheng‐You Yao, Chia‐Wei Yang, Dalen W. Agnew, Yu Leo Lei, Gary D. Luker, Harvey Bumpers, Xuefei Huang, Wibool Piyawattanametha, Zhen Qiu   +11 more
openaire   +3 more sources

Multispectral optoacoustic tomography enables assessment of disease activity in paediatric inflammatory bowel disease

Photoacoustics
Multispectral optoacoustic tomography (MSOT) allows non-invasive molecular disease activity assessment in adults with inflammatory bowel disease (IBD).
Adrian P. Regensburger, Markus Eckstein, Matthias Wetzl, Roman Raming, Lars-Philip Paulus, Adrian Buehler, Emmanuel Nedoschill, Vera Danko, Jörg Jüngert, Alexandra L. Wagner, Alexander Schnell, Aline Rückel, Ulrich Rother, Oliver Rompel, Michael Uder, Arndt Hartmann, Markus F. Neurath, Joachim Woelfle, Maximilian J. Waldner, André Hoerning, Ferdinand Knieling   +20 more
doaj   +1 more source