Determination of a biological absorber depth utilizing multiple source-detector separations and multiple frequency values of near-infrared time-resolved spectroscopy
Visualization of the photon path in scattering media is attempted through the use of frequency response analysis of near-infrared time-resolved spectroscopy (NIR-TRS) spectra. The effect of the source-detector distances and the modulation frequency on the photon path is examined. It was found that the use of multifrequency information could lead to the possibility of obtaining the information of an absorber's depth without increasing the number of measurements.
Hemelt
MW
Department of Chemical and Biochemical Engineering, University of Maryland Baltimore County (UMBC), 1000 Hilltop Circle, ECS 101, Baltimore, Maryland 21250, USA.
Kang
KA