Fluorescence imaging is often used to visualize biological tissues or blood vessels during reconstructive surgery to see if vessels are connected properly. Currently, researchers use a dye that runs at the near-infrared (NIR) level of the light spectrum that gets imaged through a specialized camera that can pick up that light that runs at 700 to 900 nanometers.
Researchers have recently found that light running at more than 1,000 nanometers, known as short-wave infrared (SWIR), gives clearer images than NIR. However, there are no FDA-approved fluorescence dyes with peak emission that can run at the SWIR range.
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