For the first time, Laura Marcu’s biomedical engineering lab at UC Davis has combined intravascular ultrasound (IVUS) with fluorescence lifetime imaging (FLIm) in a single catheter probe capable to image the tiny arteries of a living heart. The new catheter can simultaneously retrieve structural and biochemical information about arterial plaque that could more reliably predict heart attacks. This video shows only the fluorescence data, with blue representing normal, healthy tissue and yellow to red representing plaque and arterial disease. Video credit: Julien Bec