Results 21 to 30 of about 668,228 (165)

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

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   +4 more sources

Intravascular multispectral optoacoustic tomography of atherosclerosis: prospects and challenges [PDF]

Imaging in Medicine, 2012
The progression of atherosclerosis involves complex changes in the structure, composition and biology of the artery wall. Currently, only anatomical plaque burden is routinely characterized in living patients, whereas compositional and biological changes are mostly inaccessible.
Amir Rosenthal, Farouc A Jaffer, Vasilis Ntziachristos   +2 more
openaire   +3 more sources

Multispectral optoacoustic tomography might be a helpful tool for noninvasive early diagnosis of psoriatic arthritis [PDF]

Photoacoustics, 2021
Currently used imaging methods for diagnosis of psoriatic arthritis (PsA) frequently come along with exposure to radiation and can often only show long-term effects of the disease.
Sandra Hallasch, Nina Giese, Ingo Stoffels, Joachim Klode, Wiebke Sondermann   +4 more
doaj   +2 more sources

Multispectral optoacoustic tomography for in vivo detection of lymph node metastases in oral cancer patients using an EGFR-targeted contrast agent and intrinsic tissue contrast: A proof-of-concept study [PDF]

Photoacoustics, 2022
Oral cancer patients undergo diagnostic surgeries to detect occult lymph node metastases missed by preoperative structural imaging techniques.
J. Vonk, J. Kukačka, P.J. Steinkamp, J.G. de Wit, F.J. Voskuil, W.T.R. Hooghiemstra, M. Bader, D. Jüstel, V. Ntziachristos, G.M. van Dam, M.J.H. Witjes   +10 more
doaj   +2 more sources

Non-invasive measurement of accelerated gastrointestinal transit in pediatric patients using Contrast-enhanced Multispectral optoacoustic tomography [PDF]

npj Imaging
Functional intestinal disorders are common; however, current imaging modalities are limited. Contrast-enhanced Multispectral optoacoustic tomography (CE-MSOT) represents a novel, non-invasive, and radiation-free imaging technique that enables assessment ...
Luisa Caselitz, Merle Claßen, Adrian Buehler, Lars-Philip Paulus, Henriette Grieshaber-Bouyer Mandelbaum, Emmanuel Nedoschill, Joachim Wölfle, André Hoerning, Ferdinand Knieling, Adrian Philip Regensburger, Felix Wachter   +10 more
doaj   +2 more sources

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

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   +2 more sources

Non-invasive multispectral optoacoustic tomography resolves intrahepatic lipids in patients with hepatic steatosis [PDF]

Photoacoustics, 2023
Hepatic steatosis is characterized by intrahepatic lipid accumulation and may lead to irreversible liver damage if untreated. Here, we investigate whether multispectral optoacoustic tomography (MSOT) can offer label-free detection of liver lipid content ...
Nikolina-Alexia Fasoula, Angelos Karlas, Olga Prokopchuk, Nikoletta Katsouli, Michail Bariotakis, Evangelos Liapis, Anna Goetz, Michael Kallmayer, Josefine Reber, Alexander Novotny, Helmut Friess, Marc Ringelhan, Roland Schmid, Hans-Henning Eckstein, Susanna Hofmann, Vasilis Ntziachristos   +15 more
doaj   +2 more sources

Developing a simulator for multispectral optoacoustic tomography

13th IEEE International Conference on BioInformatics and BioEngineering, 2013
The aim of this study was the development of a simulator for Multispectral Optoacoustic Tomography (MSOT). The modelling pathway of the simulator was separated into the optical, the acoustic and the reconstruction part in generating finally a photoacoustic image.
Efthymios Maneas, Stratis Tzoumas, Vasilis Ntziachristos, George M. Spyrou   +3 more
openaire   +3 more sources

Fluorescent protein imaging with multispectral optoacoustic tomography

SPIE Proceedings, 2010
In this work, we have developed a selective-plane illumination multispectral optoacoustic tomography (MSOT) technique for high-resolution whole-body visualization of intact optically diffusive organisms whose sizes may vary from sub-millimeter up to a centimeter range and beyond.
Razansky, D., Distel, M., Vinegoni, R., Ma, R., Köster, R., Ntziachristos, V.   +5 more
openaire   +3 more sources

Teachability of multispectral optoacoustic tomography [PDF]

Journal of Biophotonics
AbstractTo date, the appropriate training required for the reproducible operation of multispectral optoacoustic tomography (MSOT) is poorly discussed. Therefore, the aim of this study was to assess the teachability of MSOT imaging. Five operators (two experienced and three inexperienced) performed repositioning imaging experiments.
Yi Li, Janek Gröhl, Briain Haney, Milenko Caranovic, Eva Lorenz‐Meyer, Nikolaos Papatheodorou, Julius Kempf, Adrian P. Regensburger, Emmanuel Nedoschill, Adrian Buehler, Gregor Siebenlist, Werner Lang, Michael Uder, Markus F. Neurath, Maximilian Waldner, Ferdinand Knieling, Ulrich Rother   +16 more
openaire   +6 more sources