1. A method for generating a three-dimensional x-ray tomosynthetic imaging of an object in combination with an alternative non-tomosynthetic x-ray imaging of the object, comprising: recording a plurality of tomosynthetic projection images of the object from different recording angles along a tomosynthetic scanning path by a tomosynthetic x-ray device comprising an x-ray detector and a plurality of tomosynthetic x-ray sources arranged on a holder at a distance from one another; disposing on the holder having the tomosynthetic x-ray sources a further x-ray source to provide the alternative x-ray imaging of the object; reconstructing the three-dimensional x-ray imaging from the tomosynthetic projection images; and acquiring and processing signals from the further x-ray source to provide the alternative non-tomosynthetic imaging of the object; wherein each of the tomosynthetic projection images is recorded by a different x-ray source of the plurality of tomosynthetic x-ray sources and the plurality of tomosynthetic x-ray sources remain in same position during recording the tomosynthetic projection images.