X-ray diagnostic apparatus for producing a transverse layer image

US3971948A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Manfred Pfeiler · Erlangen, DE
• Gerhard Linke

Key dates

• Filing date: Aug 2, 1974
• Grant date: Jul 27, 1976
• Expiry date: Aug 2, 1994

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B6/4014
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An X-ray diagnostic installation for producing a transverse layer or planigraphic image including a first X-ray measuring arrangement having X-ray source which generates an X-ray beam whose extent of cross-sectional diffusion perpendicular to the layer is equal to the layer thickness, and equal to or less than the layer thickness in parallel to the layer, and a radiation receiver which measures the radiation intensity behind the object at successive equidistantly located points, as well as a drive arrangement for the measuring arrangement adapted to generate a linearly guided scanning motion extending in perpendicular to the direction of the central beam across the total expanse of the object, in an alternating sequence with a rotational motion about small equidistant angles, whose sum comprises 180.degree., and about a center of revolution lying approximately in the central portion of the layer surface on the main radiation beam. In addition to the first measuring arrangement, a second measuring arrangement is provided which is parallel offset with respect to the former in the direction of the linear movement, whose X-ray source generates radiation having a different value of radi…