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 the artery in cross-section where the ultrasound (gray scale) depicts shape and structure and the fluorescence (colored band) depicts the composition of the artery. Video credit: Julien Bec.