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Opt Express. 2011 Mar 14;19(6):5419-30. doi: 10.1364/OE.19.005419.

Highly efficient 3D fluorescence microscopy with a scanning laser optical tomograph.

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  • 1Biomedizinische Optik, Laser Zentrum Hannover e.V., Hollerithallee 8, D-30419 Hannover, Germany.


Optical Projection Tomography (OPT) proved to be useful for the three-dimensional tracking of fluorescence signals in biological model organisms with sizes up to several millimeters. This tomographic technique detects absorption as well as fluorescence to create multimodal three-dimensional data. While the absorption of a specimen is detected very fast usually less than 0.1% of the fluorescence photons are collected. The low efficiency can result in radiation dose dependent artifacts such as photobleaching and phototoxicity. To minimize these effects as well as artifacts introduced due to the use of a CCD- or CMOS- camera-chip, we constructed a Scanning Laser Optical Tomograph (SLOT). Compared to conventional fluorescence OPT our first SLOT enhanced the photon collection efficiency a hundredfold.

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