Controlling a medical x-ray device

A computer-implemented method for providing a trained function, the computer-implemented method comprising:

• receiving at least one training X-ray image of a region of examination of an object undergoing examination, wherein a medical object is arranged in the region of examination;
• generating a training object image based on the at least one training X-ray image;
• establishing a comparison determinability parameter for assessing a determinability of the medical object based on the training object image;
• establishing a training determinability parameter by applying the trained function to input data, wherein the input data is based on the at least one training X-ray image;
• adjusting at least one parameter of the trained function based on a comparison of the training determinability parameter with the comparison determinability parameter;
• and
• providing the trained function.

A medical X-ray device comprising:

• a providing unit,
• wherein the medical X-ray device is configured to acquire at least one X-ray image of a region of examination of an object undergoing examination by the medical X-ray device, wherein a medical object is arranged in the region of examination,
• wherein the providing unit is configured to:
• generate an object image based on the at least one acquired X-ray image;
• and
• establish a determinability parameter, for assessing a determinability of the medical object based on the object image,
• wherein the medical X-ray device and the providing unit of the medical X-ray device are configured to iteratively acquire X-ray images, generate object images, and establish determinability parameters until a termination condition occurs based on the most recently established determinability parameter.