A device and methods for filtering blood clot particles from blood from patient undergoing treatment for a thrombotic condition with a catheter are described. At least one camera of the device can attempt to track the relative position in order to determine the proper viewpoint. The autocapture safety margin is determined by the variability of the threshold data accumulated over time such that a minimum safety margin can be set to ensure that the delivered pulse energy always exceeds the threshold level. This system helps health and fitness businesses obtain new members and retain existing members by showing the members how they will look after following a specific regimen of diet andor exercise. Thus, each iterative or incremental development process can be quantitatively measured and compared without incurring extra cost or load on the project team.