Method for creating mass density images on the basis of attenuation images captured at different energy levels

US8041096B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Philipp Bernhardt · Forchheim, DE
• Ernst-Peter Rührnschopf · Erlangen, DE

Key dates

• Filing date: Apr 22, 2008
• Grant date: Oct 18, 2011
• Expiry date: Jul 7, 2030

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B6/583
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The invention relates to a method for creating scatter-corrected mass density image in dual energy X-ray absorptiometry. The mass density image is created using additional information provided by attenuation images at different energy levels in an inhomogeneous correction image area. A multi-dimensional mass density is found that is consistent for a plurality of the attenuation images by inverting a primary radiation function. A scatter fraction is determined on the basis of the multi-dimensional mass density.