A method for positioning a guide device for placement of an interventional object in a body, the guide device having a guide axis, includes: determining a target point in the body and a reference point, wherein the target point and the reference point define a planned trajectory line (PTL) extending through each determining a visualization plane, wherein the PTL intersects the visualization plane at a sighting point mounting the guide device relative to the body to move with respect to the PTL, wherein the guide device does not intersect the visualization plane determining a point of intersection (GPP) between the guide axis and the visualization plane and aligning the GPP with the sighting point in the visualization plane.
