Method and System for Detection and Tracking of Coronary Sinus Catheter Electrodes in Fluoroscopic Images

An apparatus for detecting and tracking coronary sinus (CS) catheter electrodes in a fluoroscopic image sequence, comprising:

• means for initializing a catheter electrode model in a first frame of a fluoroscopic image sequence based on input locations a plurality of CS sinus catheter electrodes in the first frame;
• and
• means for tracking the catheter electrode model in a second frame of the fluoroscopic image, comprising:
• means for detecting electrode position candidates in a second frame of the fluoroscopic image sequence using at least one trained electrode detectors;
• means for generating catheter electrode model candidates in the second frame based on the detected electrode position candidates;
• means for calculating a probability score for each of the catheter electrode model candidates;
• and
• means for selecting one of the catheter electrode model candidates based on the probability score, wherein the selected catheter electrode model candidate provides locations of the plurality of CS sinus catheter electrodes in the second frame.

A non-transitory computer readable medium encoded with computer executable instructions for detecting and tracking coronary sinus (CS) catheter electrodes in a fluoroscopic image sequence, the computer executable instructions defining steps comprising:

• initializing a catheter electrode model in a first frame of a fluoroscopic image sequence based on input locations a plurality of CS sinus catheter electrodes in the first frame;
• and
• tracking the catheter electrode model in a second frame of the fluoroscopic image sequence by:
• detecting electrode position candidates in a second frame of the fluoroscopic image sequence using at least one trained electrode detectors;
• generating catheter electrode model candidates in the second frame based on the detected electrode position candidates;
• calculating a probability score for each of the catheter electrode model candidates;
• and
• selecting one of the catheter electrode model candidates based on the probability score, wherein the selected electrode model candidate provides locations of the plurality of CS sinus catheter electrodes in the second frame.