Microcontroller-based digital front-end for near-infrared spectroscopy

Mario Ettore Giardini, Mario Corti, Giovanni G. Guizzetti, Paolo Lago, Andrea Gelmetti, Giovanni Danese

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

3 Citations (Scopus)
128 Downloads (Pure)

Abstract

Near Infrared Spectroscopy (NIRS) can be employed to noninvasively and continuously measure in-vivo local changes in haemodynamics and oxygenation of human tissues. Monitoring of these parameters is particularly useful both for basic research and during surgery, when a continuous and real-time measurement can help to avoid permanent damage to the tissues.
We present a modular acquisition system in which each subsystem, from the case to the single acquisition front-end is designed to meet all the requirements of a research-grade instrument, dedicated to intraoperatory measurements.
Part of the modules of the acquisition system has been dedicated to multipoint NIRS. A module prototype has been developed, which is able to control four LED sources and two detectors. On each front-end a RISC microcontroller performs source and detector multiplexing with a digital correlation technique. A number of such modules can be independently addressed through a bus by a PC-based workstation (integrated on the instrument) for data collection, processing and visualization.
Preliminary tests of the prototype on tourniquet-induced forearm ischaemia show adequate detectivity and time response. The operating parameters derived from the prototype will be employed in the design of a high channel count module, which will exploit the capabilities of a digital signal processor (DSP), for spatially mapped brain oxygenation monitoring.
Original languageEnglish
Title of host publicationDiagnostic, Guidance and Surgical-Assist Systems II
EditorsTuan Vo-Dinh, Warren S. Grundfest, David A. Benaron
Pages338-344
Number of pages7
DOIs
Publication statusPublished - 3 May 2000
EventConference on Biomedical Diagnostic, Guidance, and Surgical-Assist Systems II - San Jose, United States
Duration: 25 Jan 200026 Jan 2000

Publication series

NameProceedings of SPIE
PublisherSPIE Press
Volume3911
ISSN (Print)0277-786X

Conference

ConferenceConference on Biomedical Diagnostic, Guidance, and Surgical-Assist Systems II
CountryUnited States
CitySan Jose
Period25/01/0026/01/00

Keywords

  • multichannel NIRS
  • LED
  • digital
  • multicontroller-based
  • digital front-end
  • near-infrared spectroscopy

Fingerprint Dive into the research topics of 'Microcontroller-based digital front-end for near-infrared spectroscopy'. Together they form a unique fingerprint.

  • Cite this

    Giardini, M. E., Corti, M., Guizzetti, G. G., Lago, P., Gelmetti, A., & Danese, G. (2000). Microcontroller-based digital front-end for near-infrared spectroscopy. In T. Vo-Dinh, W. S. Grundfest, & D. A. Benaron (Eds.), Diagnostic, Guidance and Surgical-Assist Systems II (pp. 338-344). (Proceedings of SPIE; Vol. 3911). https://doi.org/10.1117/12.384921