Is single-view fluoroscopy sufficient in guiding cardiac ablation procedures?

Area of Science:

• Biomedical Engineering
• Medical Imaging
• Cardiology

Background:

• Existing CARTO XP ablation systems offer 3D cardiac mapping but are costly.
• High costs are associated with dedicated magnetic catheters and the system itself.
• There is a need for affordable catheter navigation systems for radiofrequency ablation.

Purpose of the Study:

• To develop a cost-effective prototype catheter navigation system.
• To simulate the functionality of the CARTO XP system at a lower price point.
• To shorten radiofrequency ablation procedure duration and increase efficacy.

Main Methods:

• Utilized single-view fluoroscopic images from an Integris Allura fluoroscope.
• Employed pattern recognition techniques to estimate catheter depth within the heart.
• Validated the system using phantom experiments and clinical data.

Main Results:

• Phantom experiments showed average depth errors of 2.05 +/- 1.46 mm (7-French) and 1.54 +/- 1.29 mm (8-French).
• Clinical experimentation yielded standard errors of estimate for depth at 13.1 mm (posterior) and 10.1 mm (lateral) views.
• The system demonstrated feasibility in obtaining 3D geometrical data from single-view images.

Conclusions:

• An affordable fluoroscopic navigation system for guiding radiofrequency catheter ablation was developed.
• The system shows promise in reducing costs associated with cardiac ablation procedures.
• Further development is needed to address limitations and improve accuracy in clinical settings.