Technique for compensating an X-ray grid shadow using an actuator system

A computing apparatus for controlling a compensation actuator system for compensating a shadow of an X-ray scattered radiation absorption grid in an X-ray image recorded with a pivotably mounted X-ray device, the computer apparatus comprising:

• a receiving interface configured to receive motion state data indicative of a motion state of an X-ray device, wherein the X-ray device is mounted on a pivotable arm, and wherein the motion state is assigned to a time of recording of an X-ray image by the X-ray device;
• a quality measure determining unit configured to determine a quality measure of the X-ray image with respect to a shadow of an X-ray scattered radiation absorption grid, which is arranged on a detector of the X-ray device;
• a control signal determining unit configured to determine a control signal for a compensation actuator system for adjusting a position of the X-ray scattered radiation absorption grid depending on the received motion state data and depending on the determined quality measure, wherein the determining of the control signal comprises optimizing the quality measure;
• and
• a control signal output interface configured to output the determined control signal to the compensation actuator system in order to compensate the shadow of the X-ray scattered radiation absorption grid.

A non-transitory computer implemented storage medium that stores machine-readable instructions executable by at least one processor for controlling a compensation actuator system for compensating a shadow of an X-ray scattered radiation absorption grid in an X-ray image recorded with a pivotably mounted X-ray device, the machine-readable instructions comprising:

• receiving motion state data indicative of a motion state of an X-ray device, wherein the X-ray device is mounted on a pivotable arm, and wherein the motion state is assigned to a time of recording of an X-ray image by the X-ray device;
• determining a quality measure of the X-ray image with respect to a shadow of an X-ray scattered radiation absorption grid, that is arranged on a detector of the X-ray device;
• determining a control signal for the compensation actuator system for adjusting a position of the X-ray scattered radiation absorption grid depending on the received motion state data and depending on the determined quality measure, wherein determining the control signal comprises optimizing the quality measure;
• and
• outputting the determined control signal to the compensation actuator system in order to compensate the shadow of the X-ray scattered radiation absorption grid.