Local motion identification and correction schemes for ultrafast CT flow studies

Abstract

Analysis of flow studies with ultrafast CT (computed tomography) generally assumes registration of a sequence of images acquired to measure time density curves produced by contrast medium enhancement. However, only under strict experimental conditions is registration possible for the heart and lungs. The author preliminary develops a method to detect local motion shifts from an unenhanced image and correct subsequent images as the contrast medium enhances different regions. This preliminary research shows that local motion correction algorithms may be applicable to ultrafast CT flow studies.<>