Patent · US Active

Method and system for precise segmentation of the left atrium in C-arm computed tomography volumes

US8724881B2 · kind B2 · utility

8Cited by

3References

28Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Yefeng Zheng
Matthias John · Nuremberg, DE
Gareth Funka-Lea · Princeton, US
Jan Boese · Eckental, DE
Dorin Comaniciu · Princeton Junction, US

Key dates

Filing date	Nov 7, 2012
Grant date	May 13, 2014
Priority date	—
Expiry date	Dec 11, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG06T2207/30048
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method and system for multi-part left atrium (LA) segmentation in a C-arm CT volume is disclosed. Multiple LA part models, including an LA chamber body mesh, an appendage mesh, a left inferior pulmonary vein (PV) mesh, a left superior PV mesh, a right inferior PV mesh, and a right superior PV mesh, are segmented in a 3D volume. A volume mask is generated from the LA chamber mesh, the appendage mesh, and the PV meshes. Erosion is performed in the LA chamber body and a plurality of ostia regions in the volume mask. The plurality of ostia regions in the volume mask are refined using region growing, and a smooth mesh is fit to each ostia region. A consolidated LA mesh is generated from the volume mask and the parts of the LA mesh are relabeled in the ostia region based on part boundaries detected using an optimization approach.

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