Comparative study of optical sources in the near infrared for optical coherence tomography applications.
Optical coherence tomography (OCT) is a powerful, noninvasive biomedical technique that uses low-coherence light sources to obtain in-depth scans of biological tissues. We report results obtained with three different sources emitting at 1570, 1330, and 810 nm, respectively. Attenuation and backscattering measurements are obtained with these sources for several in vitro biological tissues. From these measurements, we use a graphical method to make comparisons of the penetration depth and backscattering intensity of each wavelength for the studied samples. The influence of the coherence length of each source is also taken into account in order to make a more relevant comparison.
Carrion
Lionel
L
Ecole Polytechnique de Montréal, Department of Engineering Physics, Optoelectronics Laboratory, P.O. Box 6079, Station Centre-ville, Montréal, Québec H3C 3A7 Canada. lionel.carrion@polymtl.ca
Lestrade
Michel
M
Xu
Zhiqiang
Z
Touma
Gaby
G
Maciejko
Romain
R
Bertrand
Michel
M
D004867:Equipment Design; D019544:Equipment Failure Analysis; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008029:Lighting / Q000295:instrumentation* / Q000379:methods; D019047:Phantoms, Imaging; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013055:Spectrophotometry, Infrared / Q000295:instrumentation* / Q000379:methods; D041623:Tomography, Optical Coherence / Q000295:instrumentation* / Q000379:methods