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Abstract #0320

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

Shintaro Ichikawa1, Utaroh Motosugi2, Tetsuya Wakayama3, Satoshi Funayama1, Daiki Tamada1, Sagar Mandava4, Ty A Cashen5, and Hiroshi Onishi1
1Department of Radiology, University of Yamanashi, Chuo, Japan, 2Kofu Kyoritsu Hospital, Kofu, Japan, 3GE Healthcare, Hino, Japan, 4GE Healthcare, Atlanta, GA, United States, 5GE Healthcare, Madison, WI, United States

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.

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