title: [Ziedses des Plantes: inventor of planigraphy and subtraction].
abstract: Bernard George Ziedses des Plantes (1902-1993) trained in Utrecht, the Netherlands, as specialist in nervous diseases, but his lifelong passion was to improve X-ray imaging of living tissues. In the 1930s he not only built the first machine for planigraphy, in which the X-ray tube and the film moved together around the plane of interest, but he also designed the subtraction method to improve images after injection of contrast agents. Eventually a full-time radiologist, he also developed the 'somersault' technique of ventriculography and pioneered isotope scintigraphy.
authors.affiliation: Nederlands Tijdschrift voor Geneeskunde, Amsterdam, the Netherlands. jan@vangijn.com
authors.forename: Jan
authors.initials: J
authors.lastname: van Gijn
authors.forename: Joost P
authors.initials: JP
authors.lastname: Gijselhart
mesh_terms: D049673:History, 20th Century; D006801:Humans; D011859:Radiography / Q000266:history*; D013382:Subtraction Technique / Q000266:history*