Model-based positioning for intracardiac echocardiography volume stitching

US9179890B2 · kind B2 · utility

Assignees

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

Inventors

• Razvan Ioan Ionasec · Lawrenceville, US
• Sasa Grbic · Plainsboro, US
• Estelle Camus · Erlangen, DE
• Dorin Comaniciu · Princeton Junction, US

Key dates

• Filing date: Jul 11, 2012
• Grant date: Nov 10, 2015
• Expiry date: Dec 21, 2032

Classification

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

Abstract

Different intracardiac echocardiography volumes are stitched together. Different volumes of a patient are scanned with ICE. To stitch the volumes together, creating a larger volume, the volumes are spatially aligned. The alignment is based on feature, surface, or both feature and surface matching of the ICE volumes with a preoperative model of the same patient. The matching with the model indicates a relative position of the ICE volumes with each other. Using machine-trained classifiers may speed performance, allowing for real-time assembling of a volume from ICE data as the catheter is moved within the patient.