Method for navigation-calibrating x-ray image data and a height-reduced calibration instrument

摘要: The invention relates to a method for navigation-calibrating x-ray image data, comprising the following steps: an is produced without patient by means of device into radiation path which calibration instrument (C) introduced can be positionally detected and tracked in medical navigation system; said registered system with aid localization structures ( 18, 19 ) arranged on at least two spaced supports 3, 4 (C), images 18′, 19′ same first image; support ), together its removed from (C); produced; information 18′ 18 remaining 3 are compared images, corrected if there insufficient correspondence between ′). It further corresponding instrument.