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Figure 3 Figures of the porcine xenograft model and spectral results, testing the ability of the near-infrared (NIR) system to detect signal despite blood and motion. The spectroscopy catheter was placed in the perfused human coronary artery attached to the surface of a beating porcine heart in an open-chest preparation. The system was able to detect signals through blood from a spectral target on a beating heart similar to those obtained directly from the target without intervening blood or motion.
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