Dr. Ilkka Nissilä Profile

Dr. Ilkka Nissilä

Research / PhD Student at Aalto Univ School of Science and Technology

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Publications (9)

SPIE Journal Paper | 6 October 2015 Open Access

Nonlinear approach to difference imaging in diffuse optical tomography

Meghdoot Mozumder, Tanja Tarvainen, Aku Seppänen, Ilkka Nissilä, Simon Arridge, Ville Kolehmainen

JBO, Vol. 20, Issue 10, 105001, (October 2015) https://doi.org/10.1117/12.10.1117/1.JBO.20.10.105001

KEYWORDS: Nonlinear optics, Data modeling, Error analysis, Diffuse optical imaging, Diffuse optical tomography, Sensors, Optical imaging, Optical properties, 3D modeling, Tolerancing

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Proceedings Article | 10 July 2009 Paper

Combining near-infrared spectroscopy with electroencephalography and repetitive transcranial magnetic stimulation

Tiina Näsi, Kalle Kotilahti, Hanna Mäki, Ilkka Nissilä, Pekka Meriläinen

Proceedings Volume 7369, 736905 (2009) https://doi.org/10.1117/12.831650

KEYWORDS: Near infrared spectroscopy, Hemodynamics, Electroencephalography, Magnetism, Electrodes, Sensors, Visualization, Optical fibers, Magnetic resonance imaging, Alzheimer's disease

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Proceedings Article | 10 July 2009 Paper

Accurate anatomical background model improves reconstruction of absorptive perturbations in optical tomography

Juha Heiskala, Ilkka Nissilä

Proceedings Volume 7369, 73691M (2009) https://doi.org/10.1117/12.831691

KEYWORDS: Optical tomography, Diffuse optical imaging, Biomedical optics, Current controlled current source, Head, Monte Carlo methods

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Proceedings Article | 12 July 2007 Paper

Optical tomographic imaging of activation of the infant auditory cortex using perturbation Monte Carlo with anatomical a priori information

Juha Heiskala, Kalle Kotilahti, Lauri Lipiäinen, Petri Hiltunen, P. Ellen Grant, Ilkka Nissilä

Proceedings Volume 6629, 66290T (2007) https://doi.org/10.1117/12.728276

KEYWORDS: Data modeling, Tissue optics, Absorption, Magnetic resonance imaging, Monte Carlo methods, Optical properties, Photons, Brain, Head, Finite element methods

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SPIE Journal Paper | 1 November 2006 Open Access

Comparison between a time-domain and a frequency-domain system for optical tomography

Ilkka Nissilä, Jeremy Hebden, David Jennions, Jenni Heino, Martin Schweiger, Kalle Kotilahti, Tommi Noponen, Adam Gibson, S. Jaervenpaeae, Lauri Lipiäinen, Toivo Katila

JBO, Vol. 11, Issue 06, 064015, (November 2006) https://doi.org/10.1117/12.10.1117/1.2400700

KEYWORDS: Data modeling, Sensors, Imaging systems, Time metrology, Finite element methods, Optical fibers, Optical properties, Optical tomography, Tissue optics, Image quality

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Proceedings Article | 28 April 2005 Paper

Near-infrared spectroscopic imaging of stimulus-related hemodynamic responses on the neonatal auditory cortices

Kalle Kotilahti, Ilkka Nissila, Riikka Makela, Tommi Noponen, Lauri Lipiainen, Nasia Gavrielides, Timo Kajava, Minna Huotilainen, Vineta Fellman, Pekka Merilainen, Toivo Katila

Proceedings Volume 5693, (2005) https://doi.org/10.1117/12.590180

KEYWORDS: Near infrared spectroscopy, Sensors, Tissue optics, Hemodynamics, Spectroscopy, Imaging spectroscopy, Brain, Ear, Microelectromechanical systems, Switches

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Proceedings Article | 28 April 2005 Paper

Simultaneous diffuse near-infrared imaging of hemodynamic and oxygenation changes and electroencephalographic measurements of neuronal activity in the human brain

Tommi Noponen, Dubravko Kicic, Kalle Kotilahti, Timo Kajava, Seppo Kahkonen, Ilkka Nissila, Pekka Merilainen, Toivo Katila

Proceedings Volume 5693, (2005) https://doi.org/10.1117/12.588207

KEYWORDS: Electroencephalography, Hemodynamics, Brain, Visualization, Optical imaging, Signal to noise ratio, Neuroimaging, Neurovascular coupling, Electrodes, Optical fibers

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Proceedings Article | 29 July 2003 Paper

Near-infrared measurements of hemodynamic and oxygenation changes on the frontal cortex during breath holding, hyperventilation, and natural sleep

Tommi Noponen, Kalle Kotilahti, Jussi Toppila, Ilkka Nissila, Tapani Salmi, Timo Kajava, Toivo Katila

Proceedings Volume 4955, (2003) https://doi.org/10.1117/12.476809

KEYWORDS: Hemodynamics, Optical fibers, Heart, Tissues, Sensors, Polysomnography, Tissue optics, Oxygen, Electronic filtering, Switches

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Proceedings Article | 29 July 2003 Paper

Optical topographic studies of adults and neonates

Ilkka Nissila, Kalle Kotilahti, Tommi Noponen, Minna Huotilainen, Risto Naatanen, Toivo Katila

Proceedings Volume 4955, (2003) https://doi.org/10.1117/12.478127

KEYWORDS: Sensors, Hemodynamics, Brain, Optical fibers, Near infrared spectroscopy, Tissues, Phase measurement, Signal detection, Head, Scattering

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Showing 5 of 9 publications

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