title: Seeing with sound! A medical story only 50 years old.
authors.affiliation: Military Hospital Brussel, Belgium.
authors.forename: R
authors.initials: R
authors.lastname: Van Tiggelen
authors.forename: M
authors.initials: M
authors.lastname: Freson
mesh_terms: D005060:Europe; D049673:History, 20th Century; D006801:Humans; D014463:Ultrasonography / Q000266:history*; D014481:United States