Intraindividual comparison of stack-of-stars acquisition for arterial phase imaging with and without breath-holding on dynamic MRI of the liver

We performed intra-individual comparison of arterial phase (AP) images between differential subsampling with Cartesian ordering (DISCO) and stack-of-stars acquisition without breath-holding (DISCO-Star) on dynamic magnetic resonance imaging of the liver. Patients showing inadequate scan timing of AP in DISCO and DISCO-Star (12 s/phase) dataset were 4.9% and 21.2%, respectively. One advantage of DISCO-Star was that the adequate scan timing of AP can be obtained by using additional high frame rate reconstruction (3 s/phase) in the patient with inadequate scan timing in routine reconstruction. DISCO-Star was useful to obtain adequate AP imaging in all patients.