A multi-aperture multi-tap image sensor for simultaneous multi-band SFDI and multi-exposure laser speckle contrast blood flow imaging

Keiichiro Kagawa; Gordon Kennedy; Adrien Ponticorvo; Iori Shibata; Keita Yasutomi; Shoji Kawahito; Jun Tanida; Christian Crouzet; Bernard Choi; Anthony J. Durkin

doi:10.1117/12.2578055

30 March 2021 A multi-aperture multi-tap image sensor for simultaneous multi-band SFDI and multi-exposure laser speckle contrast blood flow imaging

Keiichiro Kagawa, Gordon Kennedy, Adrien Ponticorvo, Iori Shibata, Keita Yasutomi, Shoji Kawahito, Jun Tanida, Christian Crouzet, Bernard Choi, Anthony J. Durkin

Author Affiliations +

Proceedings Volume 11651, Optical Diagnostics and Sensing XXI: Toward Point-of-Care Diagnostics; 116510H (2021) https://doi.org/10.1117/12.2578055
Event: SPIE BiOS, 2021, Online Only

Abstract

We propose a new image sensor based on multi-aperture optics and multi-tap charge modulators for simultaneous multi-band spatial frequency domain imaging (SFDI) and blood flow mapping by multi-exposure laser speckle contrast imaging (ME-LSCI). Wavelength-multiplexed imaging implemented by attaching different bandpass filters to each lens enables to perform multi-band SFDI and ME-LSCI simultaneously. A prototype camera for 4-band SFDI (568, 668, 734, 846nm) and single-band LSCI (780nm) was built based on a commercial CMOS camera with enhanced NIR sensitivity to demonstrate the concept and tested using a rat model of graded burns.

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Keiichiro Kagawa, Gordon Kennedy, Adrien Ponticorvo, Iori Shibata, Keita Yasutomi, Shoji Kawahito, Jun Tanida, Christian Crouzet, Bernard Choi, and Anthony J. Durkin "A multi-aperture multi-tap image sensor for simultaneous multi-band SFDI and multi-exposure laser speckle contrast blood flow imaging", Proc. SPIE 11651, Optical Diagnostics and Sensing XXI: Toward Point-of-Care Diagnostics, 116510H (30 March 2021); https://doi.org/10.1117/12.2578055

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