APPARATUS AND METHOD FOR SENSING DISPLACEMENT, AND RADIO THERAPEUTIC ASSIST SYSTEM

摘要

A displacement sensing apparatus applicable to a tissue includes a loading component, a pressing component and a force sensing module. The pressing component directly or indirectly presses against the tissue. The force sensing module includes at least one stress response component which is provided between the loading component and the pressing component. When the displacement of the tissue occurs, the loading component accepts an external force, and the force sensing module calculates the displacement amount of the tissue by sensing the stress response component. In addition, the invention discloses a method for sensing displacement and a radio therapeutic assist system. By the sensing of the variations of the force in place of the known optical monitoring, the apparatus and method according to the invention provide a technique for accurately sensing displacement in a noninvasive manner.