1. A CT imaging system comprising: a rotatable gantry having an opening therein to receive a subject to be scanned; an x-ray source disposed within the rotatable gantry and configured to project a fan beam of x-rays at the subject during CT data acquisition; and a computer programmed to: acquire CT data that includes at least normal data and saturated data from a subject; compare a profile of the normal data to an off-centered phantom; generate data from the off-centered phantom; and correct the saturated data using the generated data.