Sensor guided catheter navigation system

摘要

A method and a system for producing images of a subject, such as the heart of a human being. The method may comprise acquiring ultrasound images of the subject with a catheter comprising a position sensor. The method may also comprise capturing a plurality of 4D surface registration points in the acquired ultrasound images corresponding to points on the subject. The method may also comprise registering, in space and time, a high-resolution 4D model of the subject with the plurality of 4D surface registration points. The method may also comprise displaying high resolution, real-time images of the subject during a medical procedure based on the registration of the high resolution 4D model to the 4D surface registration points. Embodiments of the present invention are especially useful in left atrium ablation procedures.

主权项

1. A computer-implemented method comprising:
capturing a plurality of surface registration points of a portion of an organ from (i) an ultrasound image of the portion of the organ acquired by a catheter from within an anatomical structure in a patient's body; and (ii) data regarding the position of the catheter when the ultrasound image was acquired; and registering a portion of a 4D model of the organ with the plurality of surface registration points by:
applying a rigid global registration; andapplying a local, free-form, non-rigid registration.