Catheter RF ablation using segmentation-based 2D-3D registration

US8675996B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Rui Liao · Princeton Junction, US
• Norbert Strobel · Heroldsbach, DE
• Chenyang Xu · Allentown, US

Key dates

• Filing date: Jun 23, 2010
• Grant date: Mar 18, 2014
• Expiry date: May 7, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2207/30048
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method for registering a two-dimensional image of a cardiocirculatory structure and a three-dimensional image of the cardiocirculatory structure includes acquiring a three-dimensional image including the cardiocirculatory structure using a first imaging modality. The acquired three-dimensional image is projected into two-dimensions to produce a two-dimensional projection image of the cardiocirculatory structure. A structure of interest is segmented either from the three-dimensional image prior to projection or from the projection image subsequent to projection. A two-dimensional image of the cardiocirculatory structure is acquired using a second imaging modality. The structure of interest is segmented from the acquired two-dimensional image. A first distance map is generated based on the two-dimensional projection image and a second distance map is generated based on the acquired two-dimensional image. A registration of the three-dimensional image and the two-dimensional image is performed by minimizing a difference between the first and second distance maps.