With the recent introduction of multirow detector systems, helical computed tomography (CT) imaging of the heart has gained renewed interest. A major benefit of such systems is that the entire human heart can be depicted in thin tomographic slices within a single breath-hold. The advent of flat-panel radiographic detectors has opened a new avenue of imaging technology research, including use of such detectors for x-ray CT. With a prototype flat-panel CT system (VCT, GE Global Research), an entire …