12 July 2004 Image reconstruction in ultrasound-modulated optical tomography
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We present an image reconstruction technique for ultrasound-modulated optical tomography. It is the first time, to the authors' knowledge, that a reconstruction technique is developed for such tomography. In analogy to X-ray computed tomography, an ultrasonic beam is scanned linearly and angularly across a biological-tissue sample. Ultrasound-modulated optical signals, reflecting the optical properties of the sample inside the ultrasonic column, are detected and taken as the projection data for the reconstruction, where a filtered back-projection algorithm is implemented. With the technique, two-dimensional images of biological tissues in cross-sections containing the scanned ultrasonic axis are obtained. The image resolution is determined by the diameter of the ultrasonic focal zone. The technique can be implemented with any standard signal-detection scheme for ultrasonic modulation of coherent light in scattering media and can be applied directly to achieve three-dimensional images of biological tissues.
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Jun Li, Jun Li, Lihong V. Wang, Lihong V. Wang, } "Image reconstruction in ultrasound-modulated optical tomography", Proc. SPIE 5320, Photons Plus Ultrasound: Imaging and Sensing, (12 July 2004); doi: 10.1117/12.530537; https://doi.org/10.1117/12.530537

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