Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation
Reexamination Certificate
2002-07-09
2008-09-23
Casler, Brian L. (Department: 3737)
Surgery
Diagnostic testing
Detecting nuclear, electromagnetic, or ultrasonic radiation
C356S300000, C356S303000, C356S317000, C356S318000, C356S326000, C356S337000, C600S473000, C600S407000, C600S310000, C600S322000
Reexamination Certificate
active
07428434
ABSTRACT:
A technique for measuring broadband near-infrared absorption spectra of turbid media that uses a combination of frequency-domain and steady-state reflectance methods. Most of the wavelength coverage is provided by a white-light steady-state measurement, whereas the frequency-domain data are acquired at a few selected wavelengths. Coefficients of absorption and reduced scattering derived from the frequency-domain data are used to calibrate the intensity of the steady-state measurements and to determine the reduced scattering coefficient at all wavelengths in the spectral window of interest. The absorption coefficient spectrum is determined by comparing the steady-state reflectance values with the predictions of diffusion theory, wavelength by wavelength. Absorption spectra of a turbid phantom and of human breast tissue in vivo, derived with the combined frequency-domain and steady-state technique, agree well with expected reference values.
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Alwin Kienle and Michael S. Patterson Josa A, vol. 14, Issue 1, pp. 246-254—January 1997.□□Improved solutions of the steady-state and the time-resolved diffusion equations for reflectance from a semi-infinite turbid medium.
Berger Andrew J.
Bevilacqua Frederic
Cerussi Albert E.
Jakubowski Dorota
Tromberg Bruce J.
Casler Brian L.
Dawes Daniel L.
Ramirez John F
The Regents of the Univeristy of California
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