title: [The beginnings of real-time ultrasound cross sectional image diagnosis 50 years ago].
authors.forename: Hans-Jürgen
authors.initials: HJ
authors.lastname: Holländer
mesh_terms: D005260:Female; D049673:History, 20th Century; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D021621:Imaging, Three-Dimensional / Q000266:history*; D011247:Pregnancy; D014463:Ultrasonography / Q000266:history*; D016216:Ultrasonography, Prenatal / Q000266:history*