Assessment with FDA for an additional trial required for U.S. approval. Imagify was created using Acusphere’s proprietary porous microparticle technology, which was also used to create three other drugs which have begun clinical development – AI-525 for acute pain, AI-850 for oncology and AI-128 for asthma. AI-525 and AI-850 were sold to Cephalon in transactions totaling $31 million. AI-128 was developed in collaboration with Elan, who contributed $7.5 million to the program. Acusphere’s technology has the potential to create a wide variety of new drugs by reformulating hydrophobic drugs and creating sustained release formulations of existing drugs.