Ultra-Low-Dose CTPA Using Sparse Sampling CT Combined with the U-Net for Deep Learning-Based Artifact Reduction: An Exploratory Study. - Andreas Philipp Sauter; Johannes Thalhammer; Felix Meurer; Tina Dorosti; Daniel Sasse; Jessica Ritter; Yannik Leonhardt; Franz Pfeiffer; Florian Schaff; Daniela Pfeiffer (J. Imaging Inform. Medicine, 2025)