Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Ivan Olefir"'
Autor:
Ivan Olefir, Ara Ghazaryan, Hong Yang, Jaber Malekzadeh-Najafabadi, Sarah Glasl, Panagiotis Symvoulidis, Valerie B. O’Leary, George Sergiadis, Vasilis Ntziachristos, Saak V. Ovsepian
Publikováno v:
Cell Reports, Vol 26, Iss 10, Pp 2833-2846.e3 (2019)
Summary: In traditional optical imaging, limited light penetration constrains high-resolution interrogation to tissue surfaces. Optoacoustic imaging combines the superb contrast of optical imaging with deep penetration of ultrasound, enabling a range
Externí odkaz:
https://doaj.org/article/8fcc5a19bfc9403fadcd5da193685bef
Eigenspectra optoacoustic tomography achieves quantitative blood oxygenation imaging deep in tissues
Autor:
Stratis Tzoumas, Antonio Nunes, Ivan Olefir, Stefan Stangl, Panagiotis Symvoulidis, Sarah Glasl, Christine Bayer, Gabriele Multhoff, Vasilis Ntziachristos
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-10 (2016)
Spectral corruption impedes imaging of blood oxygen saturation. Here Tzoumas et al.describe light fluence in the spectral domain and introduce eigenspectra Multispectral Optoacoustic Tomography to account for wavelength-dependent light attenuation an
Externí odkaz:
https://doaj.org/article/4f02fe728aed4408b6213648b6a5745a
Publikováno v:
Opto-Acoustic Methods and Applications in Biophotonics V.
Autor:
Courtney Restivo, Ivan Olefir, Lei Xing, Pouyan Mohajerani, Vasilis Ntziachristos, Stratis Tzoumas
Publikováno v:
IEEE Trans Med Imaging
IEEE Trans. Med. Imaging 39, 3643-3654 (2020)
IEEE Transactions on Medical Imaging
IEEE Trans. Med. Imaging 39, 3643-3654 (2020)
IEEE Transactions on Medical Imaging
Label free imaging of oxygenation distribution in tissues is highly desired in numerous biomedical applications, but is still elusive, in particular in sub-epidermal measurements. Eigenspectra multispectral optoacoustic tomography (eMSOT) and its Bay
Autor:
Ivan Olefir, Sarah Glasl, Vasilis Ntziachristos, Stratis Tzoumas, Melanie A. Kimm, Panagiotis Symvoulidis, Ernst J. Rummeny, Reinhard Meier, Murad Omar
Publikováno v:
Sci. Rep. 10:4903 (2020)
Scientific Reports, Vol 10, Iss 1, Pp 1-12 (2020)
Scientific Reports
Scientific Reports, Vol 10, Iss 1, Pp 1-12 (2020)
Scientific Reports
Most imaging studies of immunotherapy have focused on tracking labeled T cell biodistribution in vivo for understanding trafficking and homing parameters and predicting therapeutic efficacy by the presence of transferred T cells at or in the tumour m
Publikováno v:
J. Biophotonics 12:e201900021 (2019)
The concentrations of contrast agents for optoacoustic imaging of small animals must usually be optimized through extensive pilot experiments on a case-by-case basis. The present work describes a streamlined approach for determining the minimum detec
Publikováno v:
Trends Biotechnol. 37, 1315-1326 (2019)
Unlike traditional optical methods, optoacoustic imaging is less sensitive to scattering of ballistic photons, so it is capable of high-resolution interrogation at a greater depth. By integrating video-rate visualization with multiplexing and sensing
Eigenspectra optoacoustic tomography achieves quantitative blood oxygenation imaging deep in tissues
Autor:
Sarah Glasl, Stratis Tzoumas, Gabriele Multhoff, Vasilis Ntziachristos, Christine Bayer, Antonio Nunes, Stefan Stangl, Ivan Olefir, Panagiotis Symvoulidis
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-10 (2016)
Nat. Commun. 7:12121 (2016)
Nature Communications
Nat. Commun. 7:12121 (2016)
Nature Communications
Light propagating in tissue attains a spectrum that varies with location due to wavelength-dependent fluence attenuation, an effect that causes spectral corruption. Spectral corruption has limited the quantification accuracy of optical and optoacoust
Publikováno v:
Proc. R. Soc. London A 474 (2018)
Optoacoustic imaging was for a long time concerned with the reconstruction of energy density or optical properties. In this work, we present the full inverse problem with respect to optical absorption and diffusion as well as speed of sound and mass
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a5b91f58c14e9537415bc9bb983f72e
https://opus.bibliothek.uni-augsburg.de/opus4/frontdoor/index/index/docId/98744
https://opus.bibliothek.uni-augsburg.de/opus4/frontdoor/index/index/docId/98744
Publikováno v:
IEEE Trans. Med. Imaging 37, 2070-2079 (2018)
The quantification of hemoglobin oxygen saturation (sO(2)) with multispectral optoacoustic (OA) (photoacoustic) tomography (MSOT) is a complex spectral unmixing problem, since the OA spectra of hemoglobin are modified with tissue depth due to depth (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b787d7de814264ac40d6f6671959aba
https://push-zb.helmholtz-muenchen.de/frontdoor.php?source_opus=53293
https://push-zb.helmholtz-muenchen.de/frontdoor.php?source_opus=53293