Three-dimensional acousto-optic imaging in biological tissues with parallel signal processing

被引：0
|
作者：
Lévêque-Fort, Sandrine [1 ]
机构：
[1] Laboratoire d'Optique Physique, Ctr. Natl. de la Rech. Scientifique, Univ. Pierre and Marie Curie, 10 rue Vauquelin, F-75005 Paris, France
来源：
Applied Optics | 2001年 / 40卷 / 07期
关键词：
Demodulation - Imaging techniques - Light scattering - Signal processing - Statistical methods - Tissue;
D O I：
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中图分类号：
学科分类号：
摘要：
An original acousto-optic method is described that allows one to reveal optical contrasts through biological tissues that are several centimeters thick with a millimeter-sized resolution. This technique is based on the interaction of scattered laser light with a focused ultrasonic field. The modulation depth of the optical speckle is related to local optical properties of the sample. Our parallel-processing approach to the demodulation of the speckle improves the observed degree of modulation by 2 orders of magnitude and quickly yields a good statistical value. Optically absorbing objects were imaged inside 35-mm-thick biological tissues. © 2001 Optical Society of America.
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页码：1029 / 1036
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