A 2x2-aperture 4-tap multi-modal tissue imager for multi-band SFDI and MELSCI

Yuto Shimada; Kazuki Takada; Hoang Son Nam; Kakeru Miyazaki; Keita Yasutomi; Shoji Kawahito; Christian Crouzet; Bernard Choi; Gordon T. Kennedy; Anthony J. Durkin; Keiichiro Kagawa

doi:10.1117/12.2608397

2 March 2022 A 2x2-aperture 4-tap multi-modal tissue imager for multi-band SFDI and MELSCI

Yuto Shimada, Kazuki Takada, Hoang Son Nam, Kakeru Miyazaki, Keita Yasutomi, Shoji Kawahito, Christian Crouzet, Bernard Choi, Gordon T. Kennedy, Anthony J. Durkin, Keiichiro Kagawa

Author Affiliations +

Proceedings Volume 11951, Design and Quality for Biomedical Technologies XV; 1195107 (2022) https://doi.org/10.1117/12.2608397
Event: SPIE BiOS, 2022, San Francisco, California, United States

Abstract

We demonstrate simultaneous multi-band spatial frequency domain imaging (SFDI) and blood flow mapping by multi-exposure laser speckle contrast imaging (MELSCI) with a laboratory-designed 2x2-aperture 4-tap CMOS image sensor. The proposed imaging device is composed of an array of sub-image sensors. This multi-aperture configuration realizes multi-wavelength imaging to estimate chromophore concentrations and wavelength-division-multiplexed imaging for multi-band SFDI and MELSCI. For SFDI, 450, 550, 660nm LEDs were used as the light sources of a DMD. For MELSCI, a 785nm LD was used for flood illumination. Reflectance and K2 maps of a human arm before and after an exercise was measured.

Conference Presentation

Citation Download Citation

Yuto Shimada, Kazuki Takada, Hoang Son Nam, Kakeru Miyazaki, Keita Yasutomi, Shoji Kawahito, Christian Crouzet, Bernard Choi, Gordon T. Kennedy, Anthony J. Durkin, and Keiichiro Kagawa "A 2x2-aperture 4-tap multi-modal tissue imager for multi-band SFDI and MELSCI", Proc. SPIE 11951, Design and Quality for Biomedical Technologies XV, 1195107 (2 March 2022); https://doi.org/10.1117/12.2608397

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