title: New diagnostic horizons with sonar. The Mackenzie Davidson Memorial Lecture given at The British Institute of Radiology, February 20, 1975.
mesh_terms: D001610:Beta Particles; D003626:Data Display; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis; D006696:Holography / Q000379:methods; D006801:Humans; D010048:Ovarian Cysts / Q000175:diagnosis; D010051:Ovarian Neoplasms / Q000175:diagnosis; D010920:Placenta / Q000033:anatomy & histology; D010922:Placenta Diseases / Q000175:diagnosis; D011247:Pregnancy; D014465:Ultrasonics / Q000295:instrumentation; D014463:Ultrasonography