Small animal imaging platform for quantitative assessment of short-wave infrared-emitting contrast agents

Philip Hu; Marco Mingozzi; Laura M. Higgins; Vidya Ganapathy; Margot Zevon; Richard E. Riman; Charles M. Roth; Prabhas V. Moghe; Mark C. Pierce

doi:10.1117/12.2080279

4 March 2015 Small animal imaging platform for quantitative assessment of short-wave infrared-emitting contrast agents

Philip Hu, Marco Mingozzi, Laura M. Higgins, Vidya Ganapathy, Margot Zevon, Richard E. Riman, Charles M. Roth, Prabhas V. Moghe, Mark C. Pierce

Author Affiliations +

Proceedings Volume 9311, Molecular-Guided Surgery: Molecules, Devices, and Applications; 93110T (2015) https://doi.org/10.1117/12.2080279
Event: SPIE BiOS, 2015, San Francisco, California, United States

Abstract

We report the design, calibration, and testing of a pre-clinical small animal imaging platform for use with short-wave infrared (SWIR) emitting contrast agents. Unlike materials emitting at visible or near-infrared wavelengths, SWIR-emitting agents require detection systems with sensitivity in the 1-2 μm wavelength region, beyond the range of commercially available small animal imagers. We used a collimated 980 nm laser beam to excite rare-earth-doped NaYF₄:Er,Yb nanocomposites, as an example of a SWIR emitting material under development for biomedical imaging applications. This beam was raster scanned across the animal, with fluorescence in the 1550 nm wavelength region detected by an InGaAs area camera. Background adjustment and intensity non-uniformity corrections were applied in software. The final SWIR fluorescence image was overlaid onto a standard white-light image for registration of contrast agent uptake with respect to anatomical features.

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Philip Hu, Marco Mingozzi, Laura M. Higgins, Vidya Ganapathy, Margot Zevon, Richard E. Riman, Charles M. Roth, Prabhas V. Moghe, and Mark C. Pierce "Small animal imaging platform for quantitative assessment of short-wave infrared-emitting contrast agents", Proc. SPIE 9311, Molecular-Guided Surgery: Molecules, Devices, and Applications, 93110T (4 March 2015); https://doi.org/10.1117/12.2080279

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