Real-time diffuse optical tomography based on structured illumination

被引:88
作者
Belanger, Samuel [1 ,2 ]
Abran, Maxime [1 ,2 ]
Intes, Xavier [3 ]
Casanova, Christian [4 ]
Lesage, Frederic [1 ,2 ]
机构
[1] Ecole Polytech, Dept Genie Elect, Montreal, PQ H3C 3A7, Canada
[2] Ecole Polytech, Inst Genie Biomed, Montreal, PQ H3C 3A7, Canada
[3] Rensselaer Polytech Inst, Dept Biomed Engn, Troy, NY 12180 USA
[4] Univ Montreal, Ecole Optometrie, Lab Neurosci Vis, Montreal, PQ H3C 3J7, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
digital micromirror devices (DMDs); diffuse optical imaging; real-time imaging; PHOTON MIGRATION; MEDIA;
D O I
10.1117/1.3290818
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
A new optical acquisition scheme based on a pair of digital micromirror devices is developed and applied to three-dimensional tomographic imaging of turbid media. By using pairs of illumination-detection patterns with a single detector, we were able to perform high-resolution quantitative volumetric imaging of absorption heterogeneities embedded in optically thick samples. Additionally, a tomographic reconstruction algorithm was implemented on a graphical processor unit to provide optical reconstructions at a frame rate of 2 Hz. The structured illumination method proposed in this work has significant cost advantages over camera systems, as only a single detector is required. This configuration also has the potential to increase frame rate. (C) 2010 Society of Photo-Optical Instrumentation Engineers. [DOI: 10.1117/1.3290818]
引用
收藏
页数:7
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