Abstract: An X-ray diagnostic apparatus includes a floor rotating arm which is installed at one end on a floor surface so as to be rotatable around a first rotation axis, a C-arm which is mounted on the other end of the floor rotating arm so as to be rotatable around a second rotation axis, an X-ray tube which is mounted on one end of the C-arm, an X-ray detector which is mounted on the other end of the C-arm, and a bed which has a table top provided to be movable along a longitudinal axis. The bed is placed such that the longitudinal axis is spaced apart from the first rotation axis by a predetermined distance.

Abstract: An X-ray diagnostic apparatus includes a first arm mounted with a first X-ray tube and a first X-ray detector, a second arm mounted with a second X-ray tube and a second X-ray detector, a bed having a table top capable of rising and falling on which a patient is placed, a first rotating mechanism that rotates the first arm, a first moving mechanism that subjects the first arm to parallel translation, and a control unit that controls the first rotating mechanism and the first moving mechanism on the basis of a position of the second arm.

Abstract: A document filtering apparatus includes an information input/output unit, a search word extraction unit, a first ranking search unit, a learning data unit, a classifying parameter generation unit, a second ranking search unit, and a classifying unit. The information input/output unit inputs phrasal information, and outputs search result information. The search word extraction unit extracts a search word from the phrasal information. The first ranking search unit searches a document having the search word from a database, and outputs a first ranking search result. The learning data unit prepares learning data from the first ranking search result. The classifying parameter generation unit generates a classifying parameter from the learning data. The second ranking search unit searches a document having a word corresponding to the classifying parameter from the database. The classifying unit extracts a document matching to a searcher's intention, and outputs the document as a second ranking search result.

Abstract: An X-ray diagnostic apparatus includes two photographic systems, a control circuit controlling a movement of the second photographic system. A control circuit which controls movement of a photography system can move the photographic system to a temporary evacuation position closer to a photography position than an evacuation position, according to an instruction from an operator.

Abstract: A triaxially controlled X-ray diagnostic apparatus comprises a support unit having a first arm, a second arm, and a third arm which are capable of rotation on three mutually orthogonal axes, an X-ray generator mounted on an end of the third arm for irradiating an object under examination with X rays, an image intensifier, mounted on the other end of the third arm so that it is opposed to the X-ray generator, for detecting X rays transmitted through the object to provide an optical image, a TV camera connected to the image intensifier for converting the optical image into a video signal to provide an X-ray image of the object, a display unit for displaying the X-ray image, and rotation correction means for making rotation correction on an X-ray image displayed on the display unit on the basis of angles of rotation of the first, second and third arms when they are rotated from their reference position.