A method for imaging an introduced in an examination region of a patient medical instrument

The invention relates to a method for imaging an introduced in an examination region of a patient medical instrument, in particular a catheter within a cardiac examination or treatment, comprising the steps of: DOLLAR A - using a 3-D image data set of the examination region and generating a 3-D -Rekonstruktionsbilds of the examination zone, DOLLAR a - receiving at least one 2-D fluoroscopic image of the examination zone, in which the instrument is shown DOLLAR a - registration of the 3-D reconstructed image with respect to the 2-D fluoroscopic image and DOLLAR a - illustration of the 3 D reconstructed image, and superposition of 2-D fluoroscopic image over the 3-D reconstructed image on a monitor.