A method for treating a vertebral bone comprises providing a gaseous substance and providing a flowable and settable bone filling material. The new method attains the goals of simplicity, high radiochemical yields, speed, versatility, and automation. A region of interest is localized in the individual data sets on the basis of the local intensity variation. Priorities may be assigned to processor elements waiting for the resource based on a heuristic or parameter that may depend on a state of the computing device or the processor elements. The inner connector includes a releasing portion for pressing the locking portion from an inner side to separate the lock from the lock receiving portion when the inner connector is inserted into the accommodating chamber. The plurality of input buffers and the plurality of output ports, the routing control circuitry to maintain a two-tier priority scheme having at least two queues for prioritizing requests stored in the plurality of input buffers.