A three-dimensional image capture system includes a three-dimensional measuring device that is placed on a room-structure object of a room in which a patient support table is placed and performs image-capturing of a patient to thereby generate three-dimensional-image data, and a three-dimensional-image processing device that generates from the three-dimensional-image data, a three-dimensional image associated with a reference coordinate system, and that displays the three-dimensional image. The three-dimensional-image processing device includes a position-information extraction unit that takes a correlation between the reference coordinate system and three-dimensional position information of the patient in the three-dimensional-image data to thereby generate reference-coordinate-system position information of the patient based on the reference coordinate system, and a display unit that displays the three-dimensional image, wherein the display unit displays a reference image and an observed image that are the three-dimensional images captured at different timings.
