title: [Direct digital magnification mammography with a large-surface detector made of amorphous silicon].
abstract: OBJECTIVE
  To investigate the image quality of a new direct digital mammography system using a large-area amorphous silicon X-ray detector in a phantom study.
  
  
  METHODS
  The contrast-detail resolution as a function of the tube voltages, the magnification factors and the mean glandular doses were investigated using dedicated test objects.
  
  
  RESULTS
  The contrast-detail resolution was significantly improved in comparison with conventional screen-film mammography. Usually, the doses necessary to obtain these high-quality survey mammograms were smaller.
  
  
  CONCLUSIONS
  By combining the direct magnification technique and a digital flat panel detector the limited spatial resolution of such image receptors can be overcome. With this direct digital mammography technique, a digital image was directly captured without an intermediate step of optical or mechanical scan.
authors.affiliation: Institut für Medizinische Physik und Biophysik, Georg-August-Universität Göttingen. kherman@gwdg.de
authors.forename: K P
authors.initials: KP
authors.lastname: Hermann
authors.forename: C
authors.initials: C
authors.lastname: Hundertmark
authors.forename: M
authors.initials: M
authors.lastname: Funke
authors.forename: A
authors.initials: A
authors.lastname: von Brenndorff
authors.forename: E
authors.initials: E
authors.lastname: Grabbe
mesh_terms: D004867:Equipment Design; D005260:Female; D006801:Humans; D008327:Mammography / Q000295:instrumentation* / Q000379:methods / Q000706:statistics & numerical data; D019047:Phantoms, Imaging; D011856:Radiographic Image Enhancement / Q000295:instrumentation*; D011858:Radiographic Magnification / Q000295:instrumentation* / Q000706:statistics & numerical data; D012825:Silicon; D014963:X-Ray Intensifying Screens
chemical_list: D012825:Silicon
vernacular_title: Direkt digitale Vergrösserungsmammographie mit einem grossflächigen Detektor aus amorphem Silizium.