Title :
Broadband instrumentation for spectroscopy in turbid media using NIR
Author :
Mu, Chengpeng ; Daryoush, Afshin S.
Author_Institution :
Dept. of Electr. & Comput. Eng., Drexel Univ., Philadelphia, PA, USA
Abstract :
A custom designed broadband NIR spectroscopy system is reported. A high-speed high power optical transmitter is designed over the frequency range from 100 MHz up to 3 GHz. Phantom experiments are performed to extract optical parameters of a turbid media simulating a breast tissue. Both broadband and single-frequency extraction methods are used to extract optical parameters of the phantom model. The comparison shows that the achieved extraction accuracy of optical parameter (μa, μz) using broadband extraction method is better than the single frequency technique.
Keywords :
biological tissues; gynaecology; high-speed optical techniques; infrared spectroscopy; medical signal processing; optical design techniques; optical transmitters; phantoms; physiological models; turbidity; 100 to 3E6 MHz; NIR spectroscopy; breast tissue simulation; broadband extraction methods; broadband instrumentation; extraction accuracy; high power optical transmitter; high-speed optical transmitter; optical parameter extraction; phantom experiments; phantom model; single-frequency extraction methods; transmitter design; turbid media; Biomedical optical imaging; Frequency; High speed optical techniques; Instruments; Optical modulation; Optical receivers; Optical saturation; Optical scattering; Optical transmitters; Spectroscopy;
Conference_Titel :
Lightwave Technologies in Instrumentation and Measurement Conference, 2004. Proceedings of the
Print_ISBN :
0-7803-8722-8
DOI :
10.1109/LTIMC.2004.1370991
