Figure 1a. High-quality MPR images obtained from coronary CT angiographic data sets with excellent structural consistency. The patient, a 41-year-old woman, had an average heart rate of 48 bpm during CT angiography. (a) Axial image obtained at the midventricular level shows a round enhanced area representing the right coronary artery (RCA). No motion artifact is seen. (b, c) Coronal (b) and sagittal (c) images show no undulating contours at the cardiac border.