Apparatus for displaying fluoroscopic tomographic images of the body

US4349740A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Peter Grassmann · Erlangen, DE
• Kurt Dietz · Erlangen, DE
• Friedrich Meinel · Erlangen, DE

Key dates

• Filing date: Jan 11, 1980
• Grant date: Sep 14, 1982
• Expiry date: Jan 11, 2000

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B6/4429
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

In illustrated laminographic embodiments, longitudinal body layers are scanned by arranging individual x-ray tubes along a path or surface parallel to the body layer. The intensity of each conical beam focused on the body layer may be individually selected according to the absorption of the associated beam path through the body, for the sake of a fluoroscopic image of uniform brightness. For scanning either longitudinal or transverse body layers, a stationary detector may be utilized, sequentially activated conical or thin fan-shaped beams impinging on respective sets of time-shared detector locations to provide sets of measured values identified with the respective beams.