A method for detecting the three-dimensional position of a in a body portion inserted medical examination instrument, in particular of a catheter is introduced into a vessel

摘要

A method for detecting the position of a in a body portion inserted medical examination instrument, in particular of a catheter is introduced into a vessel, using an apparatus for receiving the radiation images with at least one c - arc system comprising a c - sheet with a radiation source and a radiation receiver, comprising the steps of:– Receiving a plurality of two-dimensional angiography projection images of the examination zone, in which the catheter is to be inserted for the later three-dimensional volume reconstruction of the examination zone,– after insertion of the instrument receiving at least one two-dimensional projection images of said pair of the examination zone with at an angle to the image planes,– Determination of the spatial coordinates of a selected point of the instrument shown in the projection images in a common, the receiving the angiography projection images and the projection images basic coordinate system, and– Representation of the selected point of the instrument within the three-dimensional volume reconstruction of the examination zone in the common coordinate system on a monitor,– wherein for the continuous representation of the selected point of the present in the examination zone examination instrument two-dimensional projection images pairs continuously or..