Penetration Depth of Single-, Two-, and Three-Photon Fluorescence Microscopic Imaging through Human Cortex Structures: Monte Carlo Simulation
Applied Optics, Vol. 42, Issue 16, pp. 3321-3329 (2003)
http://dx.doi.org/10.1364/AO.42.003321
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Abstract
Penetration depth is investigated in terms of the performance of transverse image resolution and signal level in human cortex under single-, two-, and three-photon fluorescence microscopy. Simulation results show that, in a double-layer human cortex structure consisting of gray and white matter media, the signal level is strongly affected by the existence of the white matter medium under three-photon excitation. Compared with three-photon excitation, two-photon excitation keeps a better signal level and sacrifices a slight degradation in image resolution. In a thick gray matter medium, a penetration depth of 1500 μm with a near-diffraction-limited resolution is obtainable under three-photon excitation. It is also demonstrated that the numerical aperture has a slight influence on image resolution and signal level under two- and three-photon excitation because of the nonlinear nature in the excitation process.
© 2003 Optical Society of America
[Optical Society of America ]
OCIS Codes
(170.3660) Medical optics and biotechnology : Light propagation in tissues
(180.2520) Microscopy : Fluorescence microscopy
(290.4020) Scattering : Mie theory
Citation
Xiaoyuan Deng and Min Gu, "Penetration Depth of Single-, Two-, and Three-Photon Fluorescence Microscopic Imaging through Human Cortex Structures: Monte Carlo Simulation," Appl. Opt. 42, 3321-3329 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-16-3321
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