Method for providing image data

A computer-implemented method for providing a control sequence, the method comprising:

• receiving a map of dimensions of a focal spot, the focal spot formed by an electron beam striking an anode of an X-ray source, the dimensions being based on a deflection of the electron beam;
• and
• determining a control sequence for deflecting the electron beam based on the map, the control sequence is determined such that an effective focus shape of X-ray radiation emitted from the focal spot is optimized over an exposure period with respect to the dimensions of the focal spot;
• and
• providing the control sequence.

A computer-implemented method for providing a trained function for determining a control sequence for deflecting an electron beam, the method comprising:

• receiving training input data, the training input data including a map of dimensions of a focal spot, the focal spot formed by an electron beam striking an anode of an X-ray source, the dimensions are based on a deflection of the electron beam, the training input data;
• receiving training output data, the training output data including control sequences with which optimized effective focus shapes of X-ray radiation emitted from the focal spot are achievable;
• training the trained function based on the training input data and the training output data;
• and
• providing the trained function.