General Electric Company

Robert E Ueberfluss

David M Barrett

Paul M Stivender

Angiography apparatus has an L-arm rotatable about a vertical axis and a U-arm mounted on the upstanding section of the L-arm for rotation about a horizontal axis. An X-ray source is at one end of the U-arm and image receptors including an image intensifier and a first film changer are at the other end to enable making posterior-anterior and anterior-posterior X-ray views at various angles relative to a patient who is located on the isocenter which is the intersection of the horizontal, vertical and X-ray beam axis. A second film changer for making lateral generally isocentric views is mounted within the U-arm on a stand that is movable along the horizontal U-arm axis to allow obtaining various distances between the image plane of the film and another X-ray source. The lateral changer is on a mechanism for shifting it vertically and longitudinally a limited amount and for rotating it with a motor so this changer will stay level until the U-arm has been tilted through a predetermined angle. After this angle is reached motorized rotation is discontinued and the lateral changer is allowed to rotate with the U-arm.

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Greendale, WI, United States of America

Robert E Ueberfluss