Detection of electromagnetic interference fields during the operation of an x-ray detector
OwnerRoland Friedrichinventor
Life of this patent
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Abstract
A method is described for detection of electromagnetic interference fields during the operation of an X-ray detector. In the method, a value is determined that represents a variation of successive detector signal values of a pixel of the X-ray detector not exposed to X-rays. The value is compared with a predetermined threshold value and it is determined that an interference by electromagnetic interference fields has occurred in the event that the determined value exceeds the predetermined threshold value. An interference detection facility and an X-ray detector are also described.
Claims15
A method for detection of electromagnetic interference fields during operation of an X-ray detector, the method comprising:
- determining a value that represents a variation of successive detector signal values of at least one pixel of the X-ray detector not exposed to X-rays;
- comparing the value with a predetermined threshold value;
- and
- determining that an interference by electromagnetic interference fields has occurred when the value determined exceeds the predetermined threshold value.
An interference detection facility comprising:
- an input interface for receiving detector signals of at least one pixel of an X-ray detector;
- a variation determination unit for determining a value that represents a variation of successive detector signal values of at least one pixel of the X-ray detector not exposed to X-rays;
- a comparison unit for comparing the value with a predetermined threshold value;
- and
- an interference determination unit for determining that an interference by electromagnetic interference fields has occurred when the value determined exceeds the predetermined threshold value.
An X-ray detector comprising:
- a detector unit with a plurality of detector pixels;
- an interference detection facility comprising:
- an input interface for receiving detector signals of at least one pixel of the X-ray detector;
- a variation determination unit for determining a value that represents a variation of successive detector signal values of at least one pixel of the X-ray detector not exposed to X-rays;
- a comparison unit for comparing the value with a predetermined threshold value;
- and an interference determination unit for determining that an interference by electromagnetic interference fields has occurred when the value determined exceeds the predetermined threshold value;
- and
- an evaluation unit configured to evaluate the detector signals of the detector unit when the interference detection facility has determined that no interference by the electromagnetic interference fields has occurred.
Dependencies are inferred from the claim text.