Dr. Alexandre Castonguay Profile

Dr. Alexandre Castonguay

Software Engineer at Alazar Technologies Inc

SPIE Involvement:

Author

Publications (11)

Proceedings Article | 1 March 2019 Presentation + Paper

Waveform digitizer based lock in amplifier using GPU digital signal processing

Alexandre Castonguay, Romain Deterre, Muneeb Khalid

Proceedings Volume 10937, 109370C (2019) https://doi.org/10.1117/12.2508012

KEYWORDS: Linear filtering, Signal to noise ratio, Signal detection, Electronic filtering, Amplifiers, Filtering (signal processing), Digital signal processing, Convolution, Data acquisition, Visualization

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Proceedings Article | 14 March 2018 Presentation

Serial OCT reveals age-dependent cardiac fiber orientation change (Conference Presentation)

Alexandre Castonguay, Joel Lefebvre, Frédéric Lesage

Proceedings Volume 10471, 104710M (2018) https://doi.org/10.1117/12.2289092

KEYWORDS: Heart, Optical coherence tomography, Signal attenuation, Scanners, Image resolution, Optical imaging, Optical coherence microscopy

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Proceedings Article | 23 February 2018 Paper

Large scale serial two-photon microscopy to investigate local vascular changes in whole rodent brain models of Alzheimer's disease

P. Delafontaine-Martel, J. Lefebvre, R. Damseh, A. Castonguay, P. Tardif, F. Lesage

Proceedings Volume 10498, 104982O (2018) https://doi.org/10.1117/12.2290060

KEYWORDS: Brain, Image segmentation, Neuroimaging, Alzheimer's disease, Two photon excitation microscopy, Digital filtering, Microscopes, Prefrontal cortex, Imaging systems, Image registration

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Proceedings Article | 12 February 2018 Presentation + Paper

Imaging whole mouse brains with a dual resolution serial swept-source optical coherence tomography scanner

Joël Lefebvre, Alexandre Castonguay, Frédéric Lesage

Proceedings Volume 10481, 104810I (2018) https://doi.org/10.1117/12.2288521

KEYWORDS: Optical coherence tomography, Brain, Tissues, Scanners, Microscopes, Data acquisition, Point spread functions, Neuroimaging

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SPIE Journal Paper | 8 January 2018 Open Access

Comparing three-dimensional serial optical coherence tomography histology to MRI imaging in the entire mouse brain

Alexandre Castonguay, Joël Lefebvre, Frédéric Lesage, Philippe Pouliot

JBO, Vol. 23, Issue 01, 016008, (January 2018) https://doi.org/10.1117/12.10.1117/1.JBO.23.1.016008

KEYWORDS: Brain, Neuroimaging, Magnetic resonance imaging, Optical coherence tomography, In vivo imaging, Tissues, Brain mapping, Image registration, Tissue optics, 3D image processing

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SPIE Journal Paper | 11 July 2017 Open Access

Whole mouse brain imaging using optical coherence tomography: reconstruction, normalization, segmentation, and comparison with diffusion MRI

Joël Lefebvre, Alexandre Castonguay, Philippe Pouliot, Maxime Descoteaux, Frédéric Lesage

NPh, Vol. 4, Issue 04, 041501, (July 2017) https://doi.org/10.1117/12.10.1117/1.NPh.4.4.041501

KEYWORDS: Optical coherence tomography, Brain, Image segmentation, Tissue optics, Reflectivity, Brain imaging, Diffusion magnetic resonance imaging, Signal attenuation, Microscopes, Neuroimaging

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Proceedings Article | 17 February 2017 Paper

White matter segmentation by estimating tissue optical attenuation from volumetric OCT massive histology of whole rodent brains

Joël Lefebvre, Alexandre Castonguay, Frédéric Lesage

Proceedings Volume 10070, 1007012 (2017) https://doi.org/10.1117/12.2251173

KEYWORDS: Tissue optics, Signal attenuation, Optical coherence tomography, Brain, Reflectivity, 3D image processing, Image segmentation, Neuroimaging, Microscopes, Image processing, Tissues, Brain mapping, Scattering, Reconstruction algorithms

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Proceedings Article | 11 September 2015 Paper

Investigating the impact of blood pressure increase to the brain using high resolution serial histology and image processing

F. Lesage, A. Castonguay, P. Tardif, J. Lefebvre, B. Li

Proceedings Volume 9597, 95970M (2015) https://doi.org/10.1117/12.2189110

KEYWORDS: Brain, Optical coherence tomography, Tissues, Neuroimaging, Confocal microscopy, Imaging systems, Image resolution, Image processing, Luminescence, Image filtering

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Proceedings Article | 5 March 2015 Paper

Effects of anesthesia on the cerebral capillary blood flow in young and old mice

Mohammad Moeini, Maryam Tabatabaei, Samuel Bélanger, Pramod Avti, Alexandre Castonguay, Philippe Pouliot, Frédéric Lesage

Proceedings Volume 9329, 932929 (2015) https://doi.org/10.1117/12.2079803

KEYWORDS: Capillaries, Blood circulation, Blood, Cognition, Brain, Line scan image sensors, Animal model studies, Oxygen, Cognitive modeling, Laser scanners

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Proceedings Article | 2 March 2015 Paper

Investigating the correlation between white matter and microvasculature changes in aging using large scale optical coherence tomography and confocal fluorescence imaging combined with tissue sectioning

Alexandre Castonguay, Pramod Avti, Mohammad Moeini, Philippe Pouliot, Maryam Tabatabaei, Samuel Bélanger, Frédéric Lesage

Proceedings Volume 9328, 93281M (2015) https://doi.org/10.1117/12.2077830

KEYWORDS: Optical coherence tomography, Brain, Confocal microscopy, Tissues, Imaging systems, Neuroimaging, Tissue optics, Luminescence, Image resolution, Refractive index

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Proceedings Article | 25 September 2014 Paper

Ex-vivo multi-modal microscopy of healthy skin

Edgar Guevara, José Manuel Gutiérrez-Hernández, Alexandre Castonguay, Frédéric Lesage, Francisco Javier González

Proceedings Volume 9288, 92880P (2014) https://doi.org/10.1117/12.2073702

KEYWORDS: Optical coherence tomography, Skin, Raman spectroscopy, Microscopy, Luminescence, Biopsy, Imaging spectroscopy, Visualization, Breast, Spectroscopy

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Showing 5 of 11 publications

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