The possibility to have 1 mm positioning accuracy of intracardiac catheter via electrical measurement

Atrial fibrillation (AF) is a kind of high-prevalence arrhythmia for which catheter radiofrequency ablation has been approved an effective surgical treatment method. The positioning accuracy of the catheter and the real-time measurement of intracardiac physiological parameters are critical for the management of surgery quality. In recent years, the 3D mapping via magnetic field measurement has been successfully implemented to serve the above purpose but still, it is necessary to further improve the positioning accuracy and measure physiological parameters. This paper investigates the possibility to further improve the catheter positioning accuracy to 1 mm via electrical measurement. The principle of the proposed method is demonstrated by theoretical analysis and validated by phantom experiments. The experimental setup and results are presented and discussed.