Patent ID: 6568850
Filing Date: 2003-05-27
Classification: A61B

Abstract:
An x-ray imaging system comprising:an x-ray head containing an x-ray source which emits an x-ray beam, said x-ray head being rotatable around a plurality of axes for orienting the emitted x-ray beam in space; a plurality of head angle sensors, respectively associated with said plurality of axes, located with said x-ray head, each head angle sensor measuring an angle of inclination of the x-ray head relative to the axis associated therewith, and each head angle sensor generating an output signal indicative of the angle of inclination measured thereby two of said head angle sensors respectively measure angles of inclination of said x-ray head relative to two mutually perpendicular axes among said plurality of axes; a difference former which receives the respective output signals from said head angle sensors and which calculates a difference between each angle of inclination and a corresponding desired angle of inclination, and which generates a signal dependent on the calculated difference for each axis in said plurality of axes; a display provided with the respective output signals from said plurality of head angle sensors and generating a graphic display of the respective angles of inclination measured by each of said plurality of sensors, at a single viewing station said display comprises two linear arrays of individually actuatable display segments, said two linear arrays being respectively associated with said two mutually perpendicular axes; and said display and said difference former cooperatively activate respective segments in said two linear arrays dependent on a magnitude of the calculated difference for the respective axes.