Abstract
We present a portable NIRS research-grade acquisition system prototype, strictly dedicated to low-noise measurements during muscular exercise.
The prototype is able to control four LED sources and a detector. Such a number of sources allows for multipoint measurements or for multi-wavelength spectroscopy of tissue constituents other than oxygen, such as cytochrome aa3 oxidation.
The LEDs and the detector are mounted on separate probes, which carry also the relevant drivers and preamplifiers. By employing surface-mount technologies, probe size and weight are kept to a minimum. A single-chip mixed-signal RISC microcontroller performs source-to-detector multiplexing with a digital correlation technique. The acquired data are stored on an on-board 64 K EEPROM bank, and can be subsequently uploaded to a personal computer via serial port for further analysis.
The resulting instrument is compact and lightweight. Preliminary tests of the prototype on oxygen consumption during tourniquet-induced forearm ischaemia show adequate detectivity and time response.
| Language | English |
|---|---|
| Title of host publication | Diagnostic, Guidance and Surgical-Assist Systems II |
| Editors | Tuan Vo-Dinh, Warren S. Grundfest, David A. Benaron |
| Pages | 250-255 |
| Number of pages | 6 |
| DOIs | |
| Publication status | Published - 3 May 2000 |
| Event | Conference on Biomedical Diagnostic, Guidance, and Surgical-Assist Systems II - San Jose, United States Duration: 25 Jan 2000 → 26 Jan 2000 |
Publication series
| Name | Proceedings of SPIE |
|---|---|
| Publisher | SPIE Press |
| Volume | 3911 |
| ISSN (Print) | 0277-786X |
Conference
| Conference | Conference on Biomedical Diagnostic, Guidance, and Surgical-Assist Systems II |
|---|---|
| Country | United States |
| City | San Jose |
| Period | 25/01/00 → 26/01/00 |
Fingerprint
Keywords
- portable NIRS
- LED
- digital
- portable microcontroller-based instrument
- near-infrared spectroscopy
Cite this
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Portable microcontroller-based instrument for near-infrared spectroscopy. / Giardini, Mario Ettore; Corti, Mario; Lago, Paolo; Gelmetti, Andrea.
Diagnostic, Guidance and Surgical-Assist Systems II. ed. / Tuan Vo-Dinh; Warren S. Grundfest; David A. Benaron. 2000. p. 250-255 (Proceedings of SPIE; Vol. 3911).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book
TY - GEN
T1 - Portable microcontroller-based instrument for near-infrared spectroscopy
AU - Giardini, Mario Ettore
AU - Corti, Mario
AU - Lago, Paolo
AU - Gelmetti, Andrea
PY - 2000/5/3
Y1 - 2000/5/3
N2 - Near Infrared Spectroscopy (NIRS) can be employed to noninvasively and continuously measure in-vivo local changes in haemodynamics and oxygenation of human tissues. In particular, the technique can be particularly useful for muscular functional monitoring.We present a portable NIRS research-grade acquisition system prototype, strictly dedicated to low-noise measurements during muscular exercise.The prototype is able to control four LED sources and a detector. Such a number of sources allows for multipoint measurements or for multi-wavelength spectroscopy of tissue constituents other than oxygen, such as cytochrome aa3 oxidation.The LEDs and the detector are mounted on separate probes, which carry also the relevant drivers and preamplifiers. By employing surface-mount technologies, probe size and weight are kept to a minimum. A single-chip mixed-signal RISC microcontroller performs source-to-detector multiplexing with a digital correlation technique. The acquired data are stored on an on-board 64 K EEPROM bank, and can be subsequently uploaded to a personal computer via serial port for further analysis.The resulting instrument is compact and lightweight. Preliminary tests of the prototype on oxygen consumption during tourniquet-induced forearm ischaemia show adequate detectivity and time response.
AB - Near Infrared Spectroscopy (NIRS) can be employed to noninvasively and continuously measure in-vivo local changes in haemodynamics and oxygenation of human tissues. In particular, the technique can be particularly useful for muscular functional monitoring.We present a portable NIRS research-grade acquisition system prototype, strictly dedicated to low-noise measurements during muscular exercise.The prototype is able to control four LED sources and a detector. Such a number of sources allows for multipoint measurements or for multi-wavelength spectroscopy of tissue constituents other than oxygen, such as cytochrome aa3 oxidation.The LEDs and the detector are mounted on separate probes, which carry also the relevant drivers and preamplifiers. By employing surface-mount technologies, probe size and weight are kept to a minimum. A single-chip mixed-signal RISC microcontroller performs source-to-detector multiplexing with a digital correlation technique. The acquired data are stored on an on-board 64 K EEPROM bank, and can be subsequently uploaded to a personal computer via serial port for further analysis.The resulting instrument is compact and lightweight. Preliminary tests of the prototype on oxygen consumption during tourniquet-induced forearm ischaemia show adequate detectivity and time response.
KW - portable NIRS
KW - LED
KW - digital
KW - portable microcontroller-based instrument
KW - near-infrared spectroscopy
UR - http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=916494
U2 - 10.1117/12.384910
DO - 10.1117/12.384910
M3 - Conference contribution book
SN - 0819435279
T3 - Proceedings of SPIE
SP - 250
EP - 255
BT - Diagnostic, Guidance and Surgical-Assist Systems II
A2 - Vo-Dinh, Tuan
A2 - Grundfest, Warren S.
A2 - Benaron, David A.
ER -