Forget Benoît-Claude, Ramaz François, Atlan Michaël, Selb Juliette, Boccara Albert-Claude
Laboratoire d'Optique, Centre National de la Recherche Scientifique Unité Propre de Recherche Associée 0005, Université Pierre et Marie Curie Paris, Cedex 05, France.
Appl Opt. 2003 Mar 1;42(7):1379-83. doi: 10.1364/ao.42.001379.
We report new results on acousto-optical tomography in phantom tissues using a frequency chirp modulation and a CCD camera. This technique allows quick recording of three-dimensional images of the optical contrast with a two-dimensional scan of the ultrasound source in a plane perpendicular to the ultrasonic path. The entire optical contrast along the ultrasonic path is concurrently obtained from the capture of a film sequence at a rate of 200 Hz. This technique reduces the acquisition time, and it enhances the axial resolution and thus the contrast, which are usually poor owing to the large volume of interaction of the ultrasound perturbation.
我们报告了使用频率啁啾调制和电荷耦合器件（CCD）相机在模拟组织中进行声光层析成像的新结果。该技术通过在垂直于超声路径的平面内对超声源进行二维扫描，能够快速记录光学对比度的三维图像。沿着超声路径的整个光学对比度可通过以200赫兹的速率捕获胶片序列同时获得。该技术减少了采集时间，并提高了轴向分辨率，进而增强了对比度，而由于超声扰动的相互作用体积较大，轴向分辨率和对比度通常较差。
