Three-dimensional acousto-optic mapping using planar scanning with ultrasound bursts


Bratchenia, A. and Molenaar, R. and Kooyman, R.P.H. (2009) Three-dimensional acousto-optic mapping using planar scanning with ultrasound bursts. In: Alexander Oraevsky & Lihong V. Wang (Eds.), Photons Plus Ultrasound: Imaging and Sensing 2009. Proceedings of SPIE, 7177 . SPIE, 71771H. ISBN 9780819474230

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Abstract:We have investigated the application of AO sensing for quantitative three-dimensional mapping of tissue-mimicking phantoms. An Intralipid phantom, which contains a turbid absorber, confined in a silicone tube, was used. Multiply scattered pulsed laser light was modulated by ultrasonic bursts focused in a predefined volume in the medium. By varying the delay time between ultrasound burst initiation and light pulse firing we could perform a scan in the ultrasound-propagation plane. By moving the ultrasound transducer, we could build up a volumetric map of modulation depth values. We have experimentally determined the acousto-optical modulation depth as a function of the absorption coefficient in phantom voxels of a few millimeters in size
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Copyright:© 2009 COPYRIGHT SPIE--The International Society for Optical Engineering
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