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Optics Letters

Optics Letters


  • Vol. 23, Iss. 12 — Jun. 15, 1998
  • pp: 975–977

Frequency-swept ultrasound-modulated optical tomography of scattering media

Lihong V. Wang and Geng Ku  »View Author Affiliations

Optics Letters, Vol. 23, Issue 12, pp. 975-977 (1998)

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A novel frequency-swept ultrasound-modulated optical tomography technique was developed to image scattering media. A frequency-swept ultrasonic wave was used to modulate the laser light passing through a scattering medium. The modulated light was received by an optical detector and was heterodyned with a reference frequency sweep. The heterodyned signal was recorded in the time domain and was then analyzed in the frequency domain to yield a one-dimensional image along the ultrasonic axis. Multiple one-dimensional images obtained at various positions perpendicular to the ultrasonic axis were combined to yield a two-dimensional tomographic image of the medium.

© 1998 Optical Society of America

OCIS Codes
(110.6960) Imaging systems : Tomography
(110.7050) Imaging systems : Turbid media
(110.7170) Imaging systems : Ultrasound

Lihong V. Wang and Geng Ku, "Frequency-swept ultrasound-modulated optical tomography of scattering media," Opt. Lett. 23, 975-977 (1998)

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