Abstract: Apparatus is described for immobilizing a child and shielding its gonads during X-ray examination. The child is held on the upper surface of an X-ray transparent horizontal platform with its legs straddling a vertical post bearing a laterally extending lead shield. The lead shield is both vertically and horizontally positionable so as to permit precise and close spacing above the child's body. The lower surface of the child supporting platform is flanged to provide a frame which retains an X-ray film cassette and minimizes blurring resulting from the child's movement. A gonadal shield assembly which is suitable for both male and female children has a generally triangular sheet of lead mounted on a rotatable X-ray transparent plate which is supported by an X-ray transparent arm extending laterally from the post.