catflap.org Online Dictionary Query

  beam direction /bˈiːm daɪɹˈɛkʃən/
  Strahlengang  [med.]
           Note: Durchleuchtungsrichtung in der Radiologie
        "central beam direction"  - zentraler Strahlengang
     Synonyms: beam projection, view
  
   see: anterior-posterior projection, AP projection, AP view, dorsoplantar view, frontal view, lateromedial view, posterior-anterior projection, PA projection, PA view, oblique view, sagittal projection, lateral view, tangential view