Kernel Flow: A high channel count scalable TD-fNIRS system

Han Y. Ban, Geoffrey M. Barrett, Alex Borisevich, Ashutosh Chaturvedi, Jacob L. Dahle, Hamid Dehghani, Bruno DoValle, Julien Dubois, Ryan M. Field*, Viswanath Gopalakrishnan, Andrew Gundran, Michael Henninger, Wilson C. Ho, Howard D. Hughes, Rong Jin, Julian Kates-Harbeck, Thanh Landy, Antonio H. Lara, Michael Leggiero, Gabriel LernerZahra M. Aghajan, Michael Moon, Alejandro Ojeda, Isai Olvera, Meric Ozturk, Sangyong Park, Milin J. Patel, Katherine L. Perdue, Wing Poon, Zachary P. Sheldon, Benjamin Siepser, Sebastian Sorgenfrei, Nathan Sun, Victor Szczepanski, Mary Zhang, Zhenye Zhu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Time-Domain Near-Infrared Spectroscopy (TD-NIRS) has been considered as the gold standard of non-invasive optical brain imaging devices. However, due to the high cost, complexity, and large form-factor, it has not been as widely adopted as Continuous Wave (CW) NIRS systems. Kernel Flow is a TD-NIRS system that has been designed to break through these limitations by maintaining the performance of a research grade TD-NIRS system while integrating all of the components into a small modular device. The Kernel Flow modules are built around miniaturized laser drivers, custom integrated circuits, and specialized detectors. The modules can be assembled into a system with dense channel coverage over the entire head. We show performance similar to benchtop systems with our miniaturized device.

Original languageEnglish
Title of host publicationIntegrated Sensors for Biological and Neural Sensing
EditorsHooman Mohseni
PublisherSPIE
ISBN (Electronic)9781510641617
DOIs
Publication statusPublished - 5 Mar 2021
EventIntegrated Sensors for Biological and Neural Sensing 2021 - Virtual, Online, United States
Duration: 6 Mar 202111 Mar 2021

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume11663
ISSN (Print)1605-7422

Conference

ConferenceIntegrated Sensors for Biological and Neural Sensing 2021
Country/TerritoryUnited States
CityVirtual, Online
Period6/03/2111/03/21

Bibliographical note

Funding Information:
We would like to thank Frédéric Lange and Ilias Tachtsidis for their advice on the measurement protocols, Husam Katnani for his system design guidance, Katriece Ray for her design support, and Bryan Johnson for his product vision and helpful discussions. This work was supported by Kernel.

Publisher Copyright:
© 2021 SPIE. All rights reserved.

Keywords

  • fNIRS
  • Imaging systems
  • MEDPHOT
  • Optical brain imaging
  • Optical properties
  • Single photon detectors
  • Time resolved spectroscopy
  • Tissue optics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Biomaterials
  • Radiology Nuclear Medicine and imaging

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