Method and System for Motion Estimation Model for Cardiac and Respiratory Motion Compensation

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This patent describes a method and system for compensating cardiac and respiratory motion during medical procedures, particularly atrial fibrillation ablation, using fluoroscopic imaging. By tracking a coronary sinus catheter in real-time and applying a trained motion estimation model (developed from prior tracking of multiple catheters), the system accurately estimates heart movements and compensates for them in fluoroscopic images, enabling more precise overlay and navigation during interventions.

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• Motion compensation during atrial fibrillation catheter ablation procedures to improve accuracy of cardiac overlays in fluoroscopic images.
• Any interventional cardiac procedure using fluoroscopic imaging where heart motion complicates visualization, such as electrophysiology mapping, ablation, or structural heart interventions.
• Development of smarter real-time navigation software for catheter tracking in minimally invasive procedures.
• Integration in cardiac imaging platforms to provide real-time 3D overlays synchronized with cardiac and respiratory motion.
• Training and simulation systems for medical staff to practice catheter-based interventions accounting for heart and lung motion.

BenefitsContent extracted from patent full text and abstract with AI.

• Increases precision and safety in cardiac catheter-based interventions by compensating for both cardiac and respiratory motion in real-time.
• Allows for more stable and accurate visualization of catheters and anatomical overlays during procedures, reducing the risk of targeting errors.
• Enables compensation even when mapping catheters are unavailable at certain times, thanks to the predictive model based on the coronary sinus catheter.
• Reduces reliance on static positional references and offers superior accuracy compared to conventional ECG-gated gating or manual image correction.
• Supports the automation of complex motion tracking tasks, potentially shortening procedure times and improving reproducibility across operators.
• Can be implemented in existing fluoroscopic imaging workflows with software and minimal additional hardware.

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Patent Abstract

A method and system for motion estimation modeling for cardiac and respiratory motion compensation is disclosed. Specifically, a coronary sinus catheter is tracked in a plurality of frames of a fluoroscopic image sequence; and cardiac and respiratory motion of a left atrium is estimated in each of the plurality of frames based on tracking results of the coronary sinus catheter using a trained motion estimation model