title: [Methodological aspects of observations of rapid tympanic membrane movements due to changes in static pressure (Valsalva maneuver) using digital high speech video recordings].
abstract: BACKGROUND
  CCD-high speed camera systems are used to record high frequency videoclips. Introducing this technology in the analysis of eardrum motions, fast motions of the eardrum can be taped using an endoscope.
  
  
  METHODS
  Records of the eardrum were made under specific static pressure conditions during the Valsalva maneuver. Initial experience with the help of a Kodak image (I 3) Ektapro 1000 Motion Analyzer allowed only conventional video signal processing and storage. A new data interface makes it possible to save and process the complete videoclip digitally.
  
  
  RESULTS
  Using an image processing workstation and special mathematical algorithms, three-dimensional computer animations of rapid eardrum motions on static pressure can be performed. The present study describes different animations of fast motion eardrum movements.
  
  
  CONCLUSIONS
  Digital high-speed video imaging is a suitable method to describe rapid eardrum motions on static pressure (Valsalva maneuver). It is possible to visualize the motion of the eardrum over time on the fast Valsalva movement at high resolution.
authors.affiliation: Medizinische Fakultät, Otto-von-Guericke-Universität Magdeburg.
authors.forename: U
authors.initials: U
authors.lastname: Vorwerk
authors.forename: M
authors.initials: M
authors.lastname: Hey
authors.forename: G
authors.initials: G
authors.lastname: Steinicke
authors.forename: K
authors.initials: K
authors.lastname: Begall
mesh_terms: D000465:Algorithms; D001696:Biomechanical Phenomena; D003198:Computer Simulation; D019723:Endoscopes; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation*; D008838:Microcomputers; D014432:Tympanic Membrane / Q000502:physiology*; D014636:Valsalva Maneuver / Q000502:physiology*; D014741:Video Recording / Q000295:instrumentation*