title: Future prospects for echo-enhancing agents.
authors.affiliation: Research and Development, Schering AG, Berlin, Germany.
authors.forename: T
authors.initials: T
authors.lastname: Fritzsch
authors.forename: R
authors.initials: R
authors.lastname: Schlief
mesh_terms: D000162:Acoustics; D003287:Contrast Media; D005544:Forecasting; D005740:Gases; D006801:Humans; D007089:Image Enhancement; D011312:Pressure; D018615:Ultrasonography, Doppler, Color / Q000379:methods / Q000639:trends
chemical_list: D003287:Contrast Media; D005740:Gases