CardioDiT: Latent Diffusion Transformers for 4D Cardiac MRI Synthesis. - Marvin Seyfarth; Sarah Kaye Mueller; Arman Ghanaat; Isabelle Ayx; Fabian Fastenrath; Philipp Wild; Alexander Hertel; Theano Papavassiliu; Salman Ul Hassan Dar; Sandy Engelhardt (CoRR, 2026)