Abstract
This paper describes an ultrasound-based real-time target tracking method for a renal stone treatment system using high intensity focused ultrasound (HIFU), because the target stone moves due to respiration, heartbeat, and so on. Especially, target shape in ultrasound image is deteriorated by cavitation bubble and debris of the target stone during HIFU treatment. This makes difficult to track the target stone, and furthermore it may fail. Therefore, a blob tracking method using target dynamic model independent of shape information is proposed. Moreover, Hough transform method is modified with convex hull algorithm to enhance tracking accuracy. Consequently, robust and accurate target tracking is performed well uninfluenced by HIFU-induced noises.
