Patent · US Active

Model based estimation of a complete or partial positron emission tomography attenuation map using maximum likelihood expectation maximization

US8299438B2 · kind B2 · utility

6Cited by

23References

25Claims

0Family size

Assignees

Siemens Medical Solutions USA, Inc. · US
Siemens Aktiengesellschaft · DE

Inventors

Matthias Fenchel · Erlangen, DE
Ralf Ladebeck · Erlangen, DE
Christian J. Michel · Lenoir City, US
Charles C. Watson · Knoxville, US

Key dates

Filing date	Jul 16, 2009
Grant date	Oct 30, 2012
Priority date	—
Expiry date	Aug 6, 2031

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B6/5235
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

Example embodiments are directed to a method of correcting attenuation in a magnetic resonance (MR) scanner and a positron emission tomography (PET) unit. The method includes acquiring PET sinogram data of an object within a field of view of the PET unit. The method further includes producing an attenuation map based on a maximum likelihood expectation maximization (MLEM) of a parameterized model instance and the PET sinogram data.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.