1. A method for determining at least one applicable path ( 32 ) for the movement of an object, especially of a surgical and/or diagnostical device, in human tissue ( 14 ) or animal tissue by means of a data set of intensity data obtained by a 3D imaging technique, by performing a direct search for the applicable path ( 32 ) of movement skipping a segmentation step for determining critical structures before determining the applicable path ( 32 ) of movement as a function of the segmentation results, the applicable path ( 32 ) of movement connecting a starting position ( 28 ) of the device with a defined target location ( 30 ), the method comprises the steps: defining the target location ( 30 ) of a reference point of the device and choosing at least one possible starting position ( 24 , 26 , 28 ) of the reference point of the device; determining a candidate path of movement ( 18 , 20 , 22 ) between the corresponding possible starting position ( 24 , 26 , 28 ) and the defined target location ( 30 ); and evaluating the candidate path of movement ( 18 , 20 , 22 ) as being an applicable path ( 32 ) depending on information about local intensity extrema and/or intensity variation resulting from the intensity data along the candidate path of movement ( 18 , 20 , 22 ).