Development of the scanning system to detect the concentration of oxy- and deoxy-hemoglobin by tracking the head

Woo Seok Ko; Naser Darwish; Enrico Gratton; Soo Hyun Kim

doi:10.1117/12.590755

25 April 2005 Development of the scanning system to detect the concentration of oxy- and deoxy-hemoglobin by tracking the head

Woo Seok Ko, Naser Darwish, Enrico Gratton, Soo Hyun Kim

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Proceedings Volume 5686, Photonic Therapeutics and Diagnostics; (2005) https://doi.org/10.1117/12.590755
Event: SPIE BiOS, 2005, San Jose, CA, United States

Abstract

We measure the concentration of oxy-, deoxy- and total hemoglobin by using the frequency-domain, near-infrared spectroscopy(NIRS) scanner. It is a non-invasive instrument that can provide real-time measurements of the changes in concentration. It can provide a diagnostic tool for the study of the brain in infants and children. However, it is difficult to apply it to the baby's head because of the contact of the probe on the soft baby's head. Therefore, we suggest the NIRS scanning system that can track the baby' head movement and detect NIRS parameters on the same position of the head. This system has three key components. The vision system performs the pattern matching for tracking the head by using the normalized cross correlation method with the target as a cross-line on the head during the diagnostic experiment. We can use the change of the position of the baby's head to re-target the light by the scanning system that uses four laser sources, a wavelength selector, and an x-y scanner. The detector system analyzes the resulting signal from the head using the diffusion model. Therefore, NIRS scanning system can provide a diagnostic tool to measure the changes of the NIRS parameters for the study of the baby's brain.

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Woo Seok Ko, Naser Darwish, Enrico Gratton, and Soo Hyun Kim "Development of the scanning system to detect the concentration of oxy- and deoxy-hemoglobin by tracking the head", Proc. SPIE 5686, Photonic Therapeutics and Diagnostics, (25 April 2005); https://doi.org/10.1117/12.590755

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KEYWORDS

Head

Near infrared spectroscopy

Diffusion

Sensors

Tissue optics

Absorption

Scanners

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