Abstract: In a method for depicting structures within volume data sets in accordance with the invention, each voxel is therefore allocated a colour and opacity by means of an allocation instruction in dependence upon the scalar values of the voxels. For each scalar value the spatial position of the voxels with this scalar value is determined and from the position coordinates the colour and opacity value of the allocation instruction at the site with this scalar value is determined. The combination of the spatial voxel positions and the scalar values permits targeted depiction of features of the structures being investigated, which can be distinguished by the allocated opacity values.