Computer-implemented maa method for operating an x-ray facility, x-ray facility, computer program and electronically readable data carrier

An X-ray device comprising:

• a controller;
• and
• a recording arrangement for recording two-dimensional projection images in different projection geometries along a recording trajectory, from which a three-dimensional image dataset is reconstructable, wherein the recording arrangement comprises an X-ray radiator and an X-ray detector,
• wherein the controller is configured for operating the X-ray device, wherein before the recording of a recording region that comprises at least one metal object relevant to artifact formation, for determining an artifact-reducing recording trajectory, the controller is further configured to:
• determine an object information item that defines a three-dimensional position, orientation, and extent for each of the at least one metal object relevant to artifact formation;
• determine, from the object information item for each of the at least one metal object relevant to artifact formation, an object model that defines at least one three-dimensional basic geometric form that defines the respective metal object relevant to artifact formation and a position, size and orientation of the artifact formation in the recording region;
• and
• determine an artifact measurement information item that defines a strength of metal artifacts that occur, for one or more of the at least one metal object relevant to artifact formation and at least one projection geometry making use of one or more of the at least one object model, and
• wherein the artifact measurement information item is used in determining the artifact-reducing recording trajectory.

In a non-transitory computer-readable storage medium that stores instructions executable by one or more processors for operating an X-ray facility that comprises, for recording two-dimensional projection images in different projection geometries along a recording trajectory, from which a three-dimensional image dataset is reconstructable, a recording arrangement with an X-ray radiator and an X-ray detector, wherein before the recording of a recording region that comprises at least one metal object relevant to artifact formation, for determining an artifact-reducing recording trajectory, the instructions comprise:

• determining an object information item that defines a three-dimensional position, orientation, and extent for each of the at least one metal object relevant to artifact formation;
• determining, from the object information item for each of the at least one metal object relevant to artifact formation, an object model that defines at least one three-dimensional basic geometric form that defines the respective metal object relevant to artifact formation and a position, size and orientation of the artifact formation in the recording region;
• and
• determining an artifact measurement information item that defines a strength of metal artifacts that occur, for one or more of the at least one metal object relevant to artifact formation and at least one projection geometry making use of one or more of the at least one object model,
• wherein the artifact measurement information item is used in determining the artifact-reducing recording trajectory.