Patent ID: 9149657
Filing Date: 2015-10-06
Classification: A61N

Abstract:
1. A measurement system for a water phantom, comprising at least one movement axis on which at least one holder for a radiation detector is arranged, the holder is movable along the movement axis, a control unit which accepts and executes commands for controlling the movement axes, a real coordinate system is present, the real coordinate axes of which are respectively defined by the movement axes, a virtual coordinate system is present, the virtual coordinate axes of which are aligned with respect to a reference plane, and a conversion unit is configured to convert movement commands in the virtual coordinate system into movement commands in the real coordinate system and transmits the movement commands in the real coordinate system to the control unit such that a movement of the holder always takes place at least one of parallel or perpendicular to the reference plane and the measurement system has at least an rZ movement axis, and a measurement device that enables an automated or automatic determination of the virtual coordinate system, the measurement device has at least one water sensor for determining a distance from the reference plane defined by a water surface.