Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Stratis Tzoumas"'
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
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:
Medical Physics. 45:3741-3748
Purpose X-ray fluorescence computer tomography (XFCT) is a new molecular imaging modality which uses x-ray excitation to stimulate the emission of fluorescent photons in high atomic number contrast agents. Scatter contamination is one of the main cha
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
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
Autor:
Kai Cheng, Guanglei Zhang, Jing Bai, Jianwen Luo, Stratis Tzoumas, Lei Xing, Jie Liu, Fei Liu
Publikováno v:
IEEE transactions on bio-medical engineering. 65(9)
Objective : X-ray luminescence computed tomography (XLCT) is an emerging and promising modality, but suffers from inferior reconstructions and smoothed target shapes. This work aims to improve the image quality with new mathematical framework. Method
Publikováno v:
IEEE transactions on bio-medical engineering. 65(8)
Objective: The purpose of this work is to introduce and study a novel imaging geometry for X-ray luminescence computed tomography (XLCT), termed coded aperture compressive X-ray luminescence tomography (CAC-XLCT). Methods: CAC-XLCT is studied through
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
Publikováno v:
Medical Physics. 42:5444-5452
With recent advancement in hardware of optoacoustic imaging systems, highly detailed cross-sectional images may be acquired at a single laser shot, thus eliminating motion artifacts. Nonetheless, other sources of artifacts remain due to signal distor