An auto-positioning apparatus for an x-ray imaging system has a transport apparatus that is configured to position an x-ray source relative to a detector. A processor is configured to receive exam data that indicates an exam type and patient data that is indicative of patient height. The processor determines the present position of the first transport apparatus and determines an imaging position according to the exam data and patient data. The processor provides a positioning signal to the transport apparatus to move the x-ray source to the imaging position.
