An apparatus for imaging the head of a patient has a transport apparatus that orbits an x-ray source and detector about the head and acquires 2-D radiographic projection images. One or more head marker retaining elements hold markers in position relative to the skull. One or more jaw marker retaining elements hold markers in position relative to the jaw bone. At least one camera acquires a jaw motion study. A control logic processor in signal communication with the x-ray source, x-ray detector, and the camera is configured to reconstruct volume image content using the 2-D radiographic projection images acquired, to segment the jaw bone structure from the skull bone structure, to register the reconstructed volume image content, and to generate display content that shows jaw bone structure motion acquired from the set of reflectance images. A display in signal communication with the control logic processor displays the generated content.