An x-ray image-pickup apparatus comprises a base movable along a ceiling wall of a photographing room, a support having one end portion rotatably attached to the base, an arm rotatably and slidable attached to the other end portion of the support, and a pair of x-ray image-pickup systems arranged to...http://www.google.com/patents/US5095501?utm_source=gb-gplus-sharePatent US5095501 - X-ray image-pickup apparatus
