Attenuation correction in emission tomography taking into account the hardware parts that are actually present

US10473741B2 · kind B2 · utility

Assignee

• BRUKER BIOSPIN MRI GMBH · DE

Inventors

• Sven Junge · Hamburg, DE
• Thimo Hugger · Waldbronn, DE

Key dates

• Filing date: Aug 9, 2018
• Grant date: Nov 12, 2019
• Expiry date: Aug 9, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/483
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method to generate an attenuation correction map to compensate imaging errors in emission tomography resulting from the presence of hardware parts inside the imaging volume of an emission tomograph. Components of 3-dimensional CAD models of the hardware parts to be compensated are converted into voxels on a predetermined grid and assigned a filling factor per voxel. Image data sets of each component are multiplied with respective attenuation coefficients and thereafter superimposed to form an attenuation correction map. Thereby, in a simple and automatable way a profoundly exact, mostly noise-free and exactly reproducible attenuation correction map for attenuation correction in an emission tomography device may be generated.