HSI of mouse subcutaneously injected with PNPs (top right injection site), RENPs (bottom right), and RENPs/PNPs mixture (left). a Bright field (SWIR), SWIR PL, and merged images acquired with 850-nm-long pass emission filter. b Abundances of PNPs, RENPs, and background (BG). c Corresponding reconstructed intensity images. d PL intensity images reconstructed from abundances with threshold level of 15% and PL/bright field merged image.