Acusphere, Inc. is a specialty pharmaceutical company. The Company is focused on the development of Imagify, which contains Perflubutane Polymer Microspheres for injectable suspension. The Company's product Imagify is a cardiovascular drug for the detection of coronary artery disease (CAD). Imagify injectable suspension consists of porous, synthetic polymer microspheres containing gas that are administered intravenously and act as tracers of blood flow or perfusion. The Company has submitted the Marketing Authorization Application (MAA) for its lead product candidate, Imagify lyophilisate for dispersion for injection with the European Medicines Agency (EMA) to support the regulatory review of Imagify in the European Union (EU).