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Titolo:
Steady-state reflectance spectroscopy in the P-3 approximation
Autore:
Hull, EL; Foster, TH;
Indirizzi:
Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA Univ Rochester Rochester NY USA 14627 s & Astron, Rochester, NY 14627 USA Univ Rochester, Med Ctr, Dept Radiol, Rochester, NY 14627 USA Univ Rochester Rochester NY USA 14627 ept Radiol, Rochester, NY 14627 USA
Titolo Testata:
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
fascicolo: 3, volume: 18, anno: 2001,
pagine: 584 - 599
SICI:
1084-7529(200103)18:3<584:SRSITP>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOURCE-DETECTOR SEPARATIONS; NEAR-INFRARED SPECTROSCOPY; SCATTERING PHASE FUNCTIONS; TIME-RESOLVED REFLECTANCE; TISSUE OPTICAL-PROPERTIES; DIFFUSE-REFLECTANCE; BOUNDARY-CONDITIONS; MONTE-CARLO; TURBID MEDIUM; LIGHT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Hull, EL Rio Grande Med Technol, 800 Bradbury SE,Suite 217, Albuquerque, NM 87106 USA Rio Grande Med Technol 800 Bradbury SE,Suite 217 Albuquerque NMUSA 87106
Citazione:
E.L. Hull e T.H. Foster, "Steady-state reflectance spectroscopy in the P-3 approximation", J OPT SOC A, 18(3), 2001, pp. 584-599

Abstract

The Green's function of the steady-state radiative-transport equation is derived in the P-3 approximation for isotropic sources. It is demonstrated that the P-3 approximation models the radiance in highly absorbing media or close to sources more accurately than does diffusion theory. Boundary conditions consistent with the P-3 approximation are also developed for semi-infinite media bounded by a nonscattering medium. Expressions for the reflectance remitted from media interrogated by a normally incident pencil beam arederived and fitted to simulated and experimental reflectance data from media having optical properties typical of biological tissue. The reconstructed optical properties are accurate to within +/-10% in absorption and scattering for source-detector separations as small as 0.43 mm and albedos as lowas 0.59. Methods for simplifying these expressions given some a priori knowledge of the scattering phase function are discussed. (C) 2001 Optical Society of America.

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Documento generato il 10/07/20 alle ore 12:23:22