1. A diagnostic imaging method for the visualization of the position of an interventional instrument ( 4 ) within an examination zone, in which method the position of the instrument ( 4 ) is determined and reproduced in the form of an image simultaneously with at least two physiological layer images ( 1, 2 ) of the examination zone, characterized in that the image planes of the layer images ( 1, 2 ) are oriented parallel to the trajectory ( 3 ) of the interventional instrument ( 4 ), the layer images ( 1, 2 ) being reproduced in a three-dimensional view of the examination zone in such a manner that the trajectory ( 3 ) of the instrument ( 4 ) constitutes the common line of intersection ( 3 ) of the image planes.