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ICOP & ICPET 2017, 23 - : 689-692 Back to browse issues page
Finding optimum source-detector separation in fNIRS system with Monte Carlo simulations
Mehrdad Zarei Mr * 1, Kourosh Zare Mr, Mohammad ali Ansari Dr
Abstract:   (945 Views)

Functional near infrared spectroscopy (fNIRS) is a noninvasive, safe and portable optical imaging modality which can be used to study neural-related hemodynamic signals of brain by measuring concentration changes of Hb and HbO2. By investigating the optical path length of detected photons in each brain layer, optical density changes due to each layer can be measured for different source-detector separations. In this study, we obtain the sensitivity of fNIRS device to changes of absorption in cortex layer for a five-layer slab brain model and find the optimum source-detector separation. The results show that for absorption changes in cortex layer (at depth of 1 cm), the optimum distance is between 25 mm and 40 mm.

Keywords: fNIRS, Monte Carlo, Gray matter, optical parameters
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Type of Study: Research | Subject: Special
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Zarei M, Zare K, Ansari M A. Finding optimum source-detector separation in fNIRS system with Monte Carlo simulations. ICOP & ICPET. 2017; 23 :689-692
URL: http://opsi.ir/article-1-1384-en.html

Volume 23 - Back to browse issues page
انجمن اپتیک و فوتونیک ایران Optics and Photonics Society of Iran
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