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Transverse slices over time through the chest of a mouse at day 2 following myocardial infarction. (a) MSOT image recorded 15 min after injection showing dPGS-NIR signal superimposed in green over image taken at 900 nm. Arrow indicates site of infarction. (b) 1 hour after injection. (c) 2 h after injection. (d) Mean pixel intensity of MSOT dPGS-NIR channel in pixels more than 2 standard deviations above the mean for the entire heart.
