Constrained registration for motion compensation in atrial fibrillation ablation procedures

US9271678B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Rui Liao · Princeton Junction, US
• Alexander Brost · Erlangen, DE
• Norbert Strobel · Heroldsbach, DE
• Andreas Wimmer · Graz, AT
• Joachim Hornegger · Effeltrich, DE

Key dates

• Filing date: Mar 2, 2012
• Grant date: Mar 1, 2016
• Expiry date: Sep 29, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2207/30021
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method for model based motion tracking of a catheter during an ablation procedure includes receiving a training series of biplanar fluoroscopic images of a catheter acquired under conditions that will be present during an ablation procedure, segmenting and processing the series of biplanar images to produce a distance transform image for each biplanar image at each acquisition time, minimizing, for each pair of biplanar images at each acquisition time, a cost function of the distance transform image for each pair of biplanar images to yield a translation parameter that provides a best fit for a model of the catheter to each pair of biplanar images at each acquisition time, and calculating an updated catheter model for each acquisition time from said translation parameter.