X-RAY GENERATING DEVICE, AND DIAGNOSTIC DEVICE AND DIAGNOSTIC METHOD THEREFOR
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United States of America
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Issued Date -
Apr 28, 2022
app pub date -
Mar 1, 2019
filing date -
Mar 1, 2019
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Abstract
An X-ray tube is provided with: a cathode and an anode sealed inside a vacuum envelope; and an ion-collecting conductor attached to the vacuum envelop so as to be in contact with an internal space of the vacuum envelope. A first current sensor measures a value of a first current flowing between the ion-collecting conductor and a node for supplying potential for attracting positive ions in the vacuum envelope. A second current sensor measures a value of a second current flowing between the anode and the cathode. A control circuit generates diagnostic information on the degree of vacuum of the X-ray tube based on a current ratio file of the first current value measured by the first current sensor to the second current value measured by the second current sensor.
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