Výsledky vyhledávání - "Nassim Nasseri"

Long-Term Changes in Optical Properties (μ

Autor: Hamoon, Zohdi, Felix, Scholkmann, Nassim, Nasseri, Ursula, Wolf

Publikováno v: Advances in experimental medicine and biology. 1072

Frequency-domain near-infrared spectroscopy (FD-NIRS) enables to measure absolute optical properties (i.e. the absorption coefficient, μ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::c9723c263fd56a24509e205178b57489
https://pubmed.ncbi.nlm.nih.gov/30178367

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Absolute Values of Optical Properties (μ

Autor: Felix, Scholkmann, Hamoon, Zohdi, Nassim, Nasseri, Ursula, Wolf

Publikováno v: Advances in experimental medicine and biology. 1072

Absolute optical properties (i.e., the absorption coefficient, μWe investigated how the absolute optical properties depend on the individual subject and the head region.The data set used for the analysis comprised 31 single FD-NIRS measurements of 1

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::751da2fbcfea901cb9fde878dd76e170
https://pubmed.ncbi.nlm.nih.gov/30178366

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In Vitro Comparisons of Near-Infrared Spectroscopy Oximeters: Impact of Slow Changes in Scattering of Liquid Phantoms

Autor: Daniel, Ostojic, Stefan, Kleiser, Nassim, Nasseri, Helene, Isler, Bjørn, Andresen, Heidrun, Wabnitz, Tanja, Karen, Felix, Scholkmann, Martin, Wolf

Publikováno v: Advances in experimental medicine and biology. 1072

Several cerebral oximeters based on near-infrared spectroscopy (NIRS) are commercially available that determine tissue oxygen saturation (StOTo investigate whether this decrease in μ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::0c3c13553e289404c865e1038182b203
https://pubmed.ncbi.nlm.nih.gov/30178374

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Impact of Changes in Systemic Physiology on fNIRS/NIRS Signals: Analysis Based on Oblique Subspace Projections Decomposition

Autor: Felix Scholkmann, Alexander Caicedo, Nassim Nasseri, Hamoon Zohdi, Ursula Wolf

Publikováno v: Advances in Experimental Medicine and Biology ISBN: 9783319912851

Measurements of cerebral and muscle oxygenation (StO2) and perfusion ([tHb]) with functional near-infrared spectroscopy (fNIRS) and near infrared spectroscopy (NIRS), respectively, can be influenced by changes in systemic physiology. The aim of our s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c06d0102568d343ae5ae38bb133a8ca
https://doi.org/10.5167/uzh-157791

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In vivo precision assessment of a near-infrared spectroscopy-based tissue oximeter (OxyPrem v1.3) in neonates considering systemic hemodynamic fluctuations

Autor: Martin Wolf, Felix Scholkmann, Daniel Ostojic, Tanja Karen, Helene Isler, Nassim Nasseri, Stefan Kleiser, Dirk Bassler, Hans Ulrich Bucher

Publikováno v: Kleiser, Stefan; Ostojic, Daniel; Nasseri, Nassim; Isler, Helene; Bucher, Hans Ulrich; Bassler, Dirk; Wolf, Martin; Scholkmann, Felix; Karen, Tanja (2018). In vivo precision assessment of a near-infrared spectroscopy-based tissue oximeter (OxyPrem v1.3) in neonates considering systemic hemodynamic fluctuations. Journal of biomedical optics, 23(6), pp. 1-10. SPIE International Society for Optical Engineering 10.1117/1.JBO.23.6.067003

The aim was to determine the precision of a noninvasive near-infrared spectroscopy (NIRS)-based tissue oximeter (OxyPrem v1.3). Using a linear mixed-effects model, we quantified the variability for cerebral tissue oxygenation (StO2) measurements in 3

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6751c6a19b8d76f3224df0ee949ee123
https://pubmed.ncbi.nlm.nih.gov/29905038

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Hemoglobin spectra affect measurement of tissue oxygen saturation

Autor: Martin Wolf, Stefan Kleiser, Felix Scholkmann, Daniel Ostojic, Helene Isler, Nassim Nasseri, Tanja Karen

Tissue oxygen saturation (StO2) is a valuable clinical parameter e.g. for intensive care applications or monitoring during surgery. Studies showed that near-infrared spectroscopy (NIRS) based tissue oximeters of different brands give systematically d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f4852500c2526f71f2b48900a7d3b0a
https://www.zora.uzh.ch/id/eprint/153293/

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Absolute Values of Optical Properties (μa, μ's, μeff and DPF) of Human Head Tissue: Dependence on Head Region and Individual

Autor: Nassim Nasseri, Ursula Wolf, Hamoon Zohdi, Felix Scholkmann

Publikováno v: Advances in Experimental Medicine and Biology ISBN: 9783319912851

Background: Absolute optical properties (i.e., the absorption coefficient, μa, and the reduced scattering coefficient, \( {\mu}_{\mathrm{s}}^{\prime } \)) of head tissue can be measured with frequency-domain near-infrared spectroscopy (FD-NIRS). Aim

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Long-Term Changes in Optical Properties (μa, μ's, μeff and DPF) of Human Head Tissue During Functional Neuroimaging Experiments

Autor: Ursula Wolf, Hamoon Zohdi, Nassim Nasseri, Felix Scholkmann

Publikováno v: Advances in Experimental Medicine and Biology ISBN: 9783319912851

Frequency-domain near-infrared spectroscopy (FD-NIRS) enables to measure absolute optical properties (i.e. the absorption coefficient, μa, and the reduced scattering coefficient, \( {\mu}_{\mathrm{s}}^{\prime } \)) of the brain tissue. The aim of th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88e57c978c0ed2f5bd8ccbfba22b12b0

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