1. A method for operating an x-ray device for creation of a three-dimensional angiography of a body vessel segment, the method comprising: providing a three-dimensional reconstruction of the body vessel segment to a computing device of the x-ray device; calculating a center line through the body vessel segment; laying, by the computing device, an axis of rotation through the center line; registering the three-dimensional reconstruction with the x-ray device; evaluating, by the computing device, a suitability of at least one recording angle pair with a first recording angle and a second recording angle for the creation of the three-dimensional angiography based on an assessment criterion; and selecting one of the at least one evaluated recording angle pair for creation of the three-dimensional angiography as a function of a result of the evaluation.