Abstract
Purpose
The increasing availability of fluorescent probes for in vivo optical imaging enables the interrogation of complex biological processes in small animals serving as models for human-like tissue function and disease. However, the validation of probe bio-distribution during their development or the study of different disease models, in support of in vivo imaging studies, is not straightforward.
Procedures
The imaging system developed consists of a customized multispectral planar imager that has been adapted on a commercial cryomicrotome and provides a powerful modality for ex vivo imaging of small animals.
Results
The ability to capture 3D anatomical (color) and fluorescence volumetric distributions of multiple fluorescent markers in high resolution is showcased.
Conclusions
Serving both as a method for accurately imaging the bio-distribution of multiple fluorescent agents inside organisms and as a modality for the validation of non-invasive methods, multispectral cryoslicing imaging offers useful insights to ex vivo optical imaging of molecular probes.
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Acknowledgements
The authors wish to thank Claudia Mayerhofer and Christoph Drebinger for their valuable technical assistance.
Conflict of Interest
The authors declare that they have no conflict of interest.
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Significance
This is a novel method for multispectral three-dimensional ex vivo small animal imaging using a rotary cryotome.
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Sarantopoulos , A., Themelis , G. & Ntziachristos , V. Imaging the Bio-Distribution of Fluorescent Probes Using Multispectral Epi-Illumination Cryoslicing Imaging. Mol Imaging Biol 13, 874–885 (2011). https://doi.org/10.1007/s11307-010-0416-8
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DOI: https://doi.org/10.1007/s11307-010-0416-8