Prof. Roman Maniewski Profile

Prof. Roman Maniewski

at IBIB PAN

SPIE Involvement:

Author

Publications (12)

Proceedings Article | 11 July 2019 Paper

The increase in amplitude of fluctuations of cerebral hemoglobin concentration in respiratory band related to increase in intra-abdominal pressure

Piotr Sawosz, Magdalena Morawiec, Wojciech Dabrowski, Michal Kacprzak, Przemyslaw Pulawski, Karolina Bejm, Roman Maniewski, Adam Liebert

Proceedings Volume 11074, 110741J (2019) https://doi.org/10.1117/12.2527027

KEYWORDS: Brain, Laparoscopy, Near infrared spectroscopy, Time-frequency analysis, Biomedical engineering

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Proceedings Article | 11 July 2019 Paper

Experimental assessment of sensitivity profiles in multidistance time-resolved near infrared spectroscopy measurements

Magdalena Morawiec, Piotr Sawosz, Roman Maniewski, Adam Liebert

Proceedings Volume 11074, 1107428 (2019) https://doi.org/10.1117/12.2526956

KEYWORDS: Absorption, Photons, Statistical analysis, Near infrared spectroscopy, Cameras, Liquids, Image analysis, Near infrared, 3D modeling, Diffusion

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SPIE Journal Paper | 14 August 2014 Open Access

Performance assessment of time-domain optical brain imagers, part 2: nEUROPt protocol

Heidrun Wabnitz, Alexander Jelzow, Mikhail Mazurenka, Oliver Steinkellner, Rainer Macdonald, Daniel Milej, Norbert Żołek, Michał Kacprzak, Piotr Sawosz, Roman Maniewski, Adam Liebert, Salavat Magazov, Jeremy Hebden, Fabrizio Martelli, Paola Di Ninni, Giovanni Zaccanti, Alessandro Torricelli, Davide Contini, Rebecca Re, Lucia Zucchelli, Lorenzo Spinelli, Rinaldo Cubeddu, Antonio Pifferi

JBO, Vol. 19, Issue 08, 086012, (August 2014) https://doi.org/10.1117/12.10.1117/1.JBO.19.8.086012

KEYWORDS: Absorption, Brain, Neuroimaging, Imaging systems, Optical properties, Sensors, Data analysis, Liquids, Biomedical optics, Spatial resolution

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SPIE Journal Paper | 2 August 2012 Open Access

Multiwavelength time-resolved detection of fluorescence during the inflow of indocyanine green into the adult's brain

Anna Gerega, Daniel Milej, Marcin Botwicz, Norbert Zolek, Michal Kacprzak, Beata Toczylowska, Roman Maniewski, Adam Liebert, Wojciech Weigl, Ewa Mayzner-Zawadzka, Wojciech Wierzejski

JBO, Vol. 17, Issue 8, 087001, (August 2012) https://doi.org/10.1117/12.10.1117/1.JBO.17.8.087001

KEYWORDS: Luminescence, Signal detection, Fluorescence spectroscopy, Tissues, Absorption, Brain, Head, In vivo imaging, Indocyanine green, Magnesium

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SPIE Journal Paper | 8 February 2012 Open Access

Application of a time-resolved optical brain imager for monitoring cerebral oxygenation during carotid surgery

Michal Kacprzak, Adam Liebert, Piotr Sawosz, Roman Maniewski, Walerian Staszkiewicz, Andrzej Gabrusiewicz, Grzegorz Madycki

JBO, Vol. 17, Issue 1, 016002, (February 2012) https://doi.org/10.1117/12.10.1117/1.JBO.17.1.016002

KEYWORDS: Brain, Arteries, Surgery, Head, Neuroimaging, Tissues, Imaging systems, Optical fibers, Absorption, Tissue optics

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Recent studies have shown that time-resolved optical measurements of the head can estimate changes in the absorption coefficient with depth discrimination. Thus, changes in tissue oxygenation, which are specific to intracranial tissues, can be assessed using this advanced technique, and this method allows us to avoid the influence of changes to extracerebral tissue oxygenation on the measured signals. We report the results of time-resolved optical imaging that was carried out during carotid endarterectomy. This surgery remains the "gold standard" treatment for carotid stenosis, and intraoperative brain oxygenation monitoring may improve the safety of this procedure. A time-resolved optical imager was utilized within the operating theater. This instrument allows for the simultaneous acquisition of 32 distributions of the time-of-flight of photons at two wavelengths on both hemispheres. Analysis of the statistical moments of the measured distributions of the time-of-flight of photons was applied for estimating changes in the absorption coefficient as a function of depth. Time courses of changes in oxy- and deoxyhemoglobin of the extra- and intracerebral compartments during cross-clamping of the carotid arteries were obtained. A decrease in the oxyhemoglobin concentration and an increase in the deoxyhemoglobin concentrations were observed in a large area of the head. Large changes were observed in the hemisphere ipsilateral to the site of clamped carotid arteries. Smaller amplitude changes were noted at the contralateral site. We also found that changes in the hemoglobin signals, as estimated from intracerebral tissue, are very sensitive to clamping of the internal carotid artery, whereas its sensitivity to clamping of the external carotid artery is limited. We concluded that intraoperative multichannel measurements allow for imaging of brain tissue hemodynamics. However, when monitoring the brain during carotid surgery, a single-channel measurement may be sufficient.

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SPIE Journal Paper | 1 April 2011 Open Access

Assessment of inflow and washout of indocyanine green in the adult human brain by monitoring of diffuse reflectance at large source-detector separation

Adam Liebert, Piotr Sawosz, Daniel Milej, Michal Kacprzak, Marcin Botwicz, Roman Maniewski, Wojciech Weigl, Ewa Mayzner-Zawadzka, Joanna Maczewska, Katarzyna Fronczewska, Leszek Królicki

JBO, Vol. 16, Issue 04, 046011, (April 2011) https://doi.org/10.1117/12.10.1117/1.3574018

KEYWORDS: Tissues, Brain, Photons, Indocyanine green, Natural surfaces, Near infrared spectroscopy, Diffuse reflectance spectroscopy, In vivo imaging, Tissue optics, Sensors

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SPIE Journal Paper | 1 November 2010 Open Access

Optical system based on time-gated, intensified charge-coupled device camera for brain imaging studies

Piotr Sawosz, Michal Kacprzak, Norbert Zolek, Wojciech Weigl, Stanislaw Wojtkiewicz, Roman Maniewski, Adam Liebert

JBO, Vol. 15, Issue 06, 066025, (November 2010) https://doi.org/10.1117/12.10.1117/1.3523366

KEYWORDS: Optical fibers, Cameras, Absorption, Imaging systems, Charge-coupled devices, Brain, Tissues, Tissue optics, Switches, Brain imaging

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SPIE Journal Paper | 1 May 2007 Open Access

Time-resolved optical imager for assessment of cerebral oxygenation

Michal Kacprzak, Adam Liebert, Piotr Sawosz, Norbert Zolek, Roman Maniewski

JBO, Vol. 12, Issue 03, 034019, (May 2007) https://doi.org/10.1117/12.10.1117/1.2743964

KEYWORDS: Photons, Absorption, Imaging systems, Tissue optics, Head, Brain, Tissues, Biomedical optics, Optical fibers, Sensors

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Proceedings Article | 7 July 2004 Paper

Time-resolved spectroscopy system for determination of optical properties of the tissue: studies on physical phantoms

Michal Kacprzak, A. Huzandrov, Adam Liebert, Roman Maniewski

Proceedings Volume 5505, (2004) https://doi.org/10.1117/12.577621

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Proceedings Article | 7 July 2004 Paper

Thermal tests for laser Doppler perfusion measurements in Raynaud's syndrome

Michal Kacprzak, A. Skora, J. Obidzinska, A. Zbiec, Roman Maniewski, W. Staszkiewicz

Proceedings Volume 5505, (2004) https://doi.org/10.1117/12.577622

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Proceedings Article | 27 August 2003 Paper

Developments in laser Doppler blood perfusion monitoring

Martin Leahy, Frits de Mul, Gert Nilsson, Roman Maniewski, Adam Liebert

Proceedings Volume 4876, (2003) https://doi.org/10.1117/12.475841

KEYWORDS: Doppler effect, Blood, Tissues, Skin, Calibration, Photons, Signal processing, Laser tissue interaction, Semiconductor lasers, Imaging systems

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Proceedings Article | 27 August 2003 Paper

Evaluation of different signal processing algorithms in laser Doppler perfusion measurements

Martin Leahy, Adam Liebert, Roman Maniewski

Proceedings Volume 4876, (2003) https://doi.org/10.1117/12.475836

KEYWORDS: Signal processing, Photodetectors, Laser processing, Doppler effect, Blood, Calibration, Filtering (signal processing), Instrument modeling, Digital signal processing, Physics

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Showing 5 of 12 publications

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