1. An imaging system comprising: a rotatable gantry for receiving an object to be scanned; a generator configured to energize an x-ray source to generate x-rays; a detector positioned to receive the x-rays that pass through the object; and a computer programmed to: obtain knowledge of metal within the object; scan the object using system scanning parameters; reconstruct an image of the object using a reconstruction algorithm; and automatically select at least one of the system scanning parameters and the reconstruction algorithm based on the obtained knowledge.