Method for controlling modulation of X-ray tube current using a single topogram

US6956929B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Heiko Wolf · Thalwil, CH
• Christoph Süb · Erlangen, DE
• Stefan Popescu · Erlangen, DE

Key dates

• Filing date: Sep 11, 2003
• Grant date: Oct 18, 2005
• Expiry date: Dec 4, 2023

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B6/544
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

In a method for controlling the modulation of the tube current of an X-ray tube in the production of images using computed tomography, a single topogram of the examination subject is obtained and an orthogonal attenuation value is calculated therefrom, also making use of geometrical information associated with the position of the table on which the examination subject is disposed. In a subsequently-obtained computed tomography scan, the tube current is controlled using the orthogonal patient attenuation.