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Figure 1. Temporal resolution of CT coronary angiography. The temporal resolution depends strongly on the rotation time and the reconstruction algorithm. In segmented (multiphase) reconstructions, temporal resolution depends also strongly on the pitch factor. The lower the pitch factor, the more cardiac phases are captured during the acquisition and the better temporal resolution. The graphs are calculated for a pitch factor of 0.2. The graphs clearly show the dependence of temporal resolution on heart rate and rotation time.
