1. A method of reducing metal artifacts in CT imaging comprising: performing a first scan to acquire first CT projection data of a region of interest at a first irradiation angles maintained for the duration of the first scan; performing a second scan to acquire second CT projection data of the region of interest at a second irradiation angle maintained for the duration of the second scan; and combining the first and second CT projection data acquired at each of the first and second irradiation angles so as to reduce metal artifacts in a resulting image.