Apparatus for the measurement of the X-ray tube high voltage
AssigneeSiemens Aktiengesellschaft
InventorsHorst Aichinger, Heinz E. Kranberg
Life of this patent
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Abstract
In an exemplary embodiment, two radiation detectors are present which are covered on their inlet sides for the radiation by two x-ray filters of different absorption. A divider divides the two output signals of the radiation detectors so that its output signal is a measure of the time variation of x-ray tube voltage during an exposure. The output signal of the divider is supplied to a time measurement circuit which provides a measure of the exposure time during which the x-ray tube voltage is greater than or equal to a predetermined value.
Claims2
Apparatus for the measurement of the x-ray tube high voltage of an x-ray diagnostic system, said apparatus including x-ray filters of different absorption, radiation detectors (3, 4) which are covered on their input sides for the radiation by the respective x-ray filters (5, 6) of different absorption, and a divider (9) for the output signals of the radiation detectors (3, 4) characterized in that a time measurement circuit is connected with the output of the divider (9) said time measurement circuit (16 through 24) comprising means for detecting the exposure time while the x-ray tube voltage is greater than or equal to a predetermined value.
Dependencies are inferred from the claim text.