TRI-PICCS in single source and dual source CT

Abstract

Recently, temporal resolution improved prior image constrained compressed sensing (TRI-PICCS), an algorithm promising improved temporal resolution in cardiac CT, was proposed. Here, we extend the ideas to dual source CT. Single source and dual source CT simulations of a heart phantom as well as a single source cardiac CT measurement are used to evaluate the temporal resolution of CT images reconstructed with TRI-PICCS. Short scan reconstructions of the same data are used for comparison. The result of this study is that there seems to be an advantage in temporal resolution when using TRI-PICCS, however, this impression is actually caused by a slight shift of the motion phase when using TRI-PICCS. Comparing short scan reconstructions and TRI-PICCS reconstructions at the same motion phase, no temporal resolution improvement could be confirmed.