X-Ray diagnostic generator for operation with falling load
AssigneeSiemens Aktiengesellschaft
InventorHeribert Amtmann
Life of this patent
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Abstract
In an exemplary embodiment, a comparator is present which compares the actual value of the x-ray tube output with a time-varying rated value output of the function generator which controls the falling load characteristic, and effects the switching off of the x-ray tube to prevent an overloading thereof if the difference between the actual and the rated value of the x-ray tube output exceeds a predetermined limit for a time interval exceeding a predetermined minimum time span.
Claims2
An x-ray diagnostic generator for operation with falling load with a control means for controlling x-ray tube output, and a function generator which, during an x-ray exposure, generates a rated value signal for the x-ray tube output according to a falling exponential function which effects the adjustment of the x-ray tube output via the control means, characterized by a cut-off element (24) actuatable for shutting off x-ray tube operation prior to expiration of the x-ray exposure time, and a comparator (22) for comparing the actual and the rated value of the x-ray tube output, and connected to the cut-off element (24) for actuating the same to switch off x-ray tube operation when the difference between actual and rated value exceeds a predetermined value.
Dependencies are inferred from the claim text.