Patent ID: 8553833

Claim:
A method for operating an imaging apparatus comprising an x-ray source with a focus from which an x-ray beam is emitted, and a measurement volume comprising a central axis, said method comprising: placing an examination subject in said measurement volume, said examination subject comprising a measurement object, of which an image is to be obtained, that is located eccentrically relative to said central axis; generating an overview image of said examination subject in said measurement volume and, in a processor, automatically identifying a portion of the measurement volume in which said measurement object is located; in said processor, dependent on the identified portion of the measurement volume in which the measurement object is located, automatically determining a projection angle range to which acquisition of only a number of x-ray projections will be confined, with said number of x-ray projections being sufficient to reconstruct at least one image of the measurement object; rotating at least said focus of said x-ray source around said measurement volume through said projection angle range to acquire said number of x-ray projections of said measurement object; and in a computer, reconstructing said at least one image of the measurement object from said number of x-ray projections.