Cardiac Coordinate Detection with Applied Electric Field and Electrophysiology Catheter

The feasibility of in-vivo coordinate measurement is analyzed in the condition of external 3D (three dimensional) orthogonal electric field and cardiac catheterization. Moreover, variable regularities of electric potential gradient are concluded based on uniform potential distribution model. Through FFT (Fast Fourier Transform), various magnitudes of voltage with separate frequencies are extracted, and then the in-vivo coordination should be achieved according to the relationship of actual distance and electric potential. From experimental results, it can be concluded that being a navigation technology, this method can provide proper location accuracy for interior coordinate measurement in endocardial operation.