Bocoum Maïmouna, Gennisson Jean-Luc, Laudereau Jean-Baptiste, Louchet-Chauvet Anne, Tualle Jean-Michel, Ramaz François
Appl Opt. 2019 Mar 10;58(8):1933-1940. doi: 10.1364/AO.58.001933.
Ultrasound-modulated optical tomography (UOT) is an imaging technique that couples light and ultrasound in order to perform in-depth imaging of highly scattering media. In previous work, we introduced plane wave UOT, an imaging method analogous to x-ray tomography based on the filtered backprojection for image reconstruction. Angle-limited measurements, however, led to drastic loss of lateral spatial resolution. Here, we present a new structured ultrasonic plane wave UOT method that allows partial recovery of the resolution. For image reconstruction, we present a generalization of the Fourier slice theorem along with a generalized filtered backprojection formalism. The method is successfully tested on simulated and experimental data.
超声调制光学层析成像（UOT）是一种将光与超声相结合的成像技术，用于对高散射介质进行深度成像。在之前的工作中，我们引入了平面波UOT，这是一种类似于X射线层析成像的成像方法，基于滤波反投影进行图像重建。然而，角度受限的测量导致横向空间分辨率急剧下降。在此，我们提出一种新的结构化超声平面波UOT方法，该方法能够部分恢复分辨率。对于图像重建，我们提出了傅里叶切片定理的推广以及广义滤波反投影形式。该方法在模拟数据和实验数据上均成功得到验证。
