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Abstract #1789

Interface Analysis of the Liver and Focal Hepatic Lesions in Hepatobiliary Phase Imaging: A Comparison between Free-breathing Radial and Conventional Breath-hold Acquisition Technique.

Nobuyuki Kawai1, Satoshi Goshima1, Yoshifumi Noda1, Kimihiro Kajita2, Hiroshi Kawada1, Yukichi Tanahashi1, Shoma Nagata1, and Masayuki Matsuo1

1Department of Radiology, Gifu University, Gifu, Japan, 2Department of Radiology services, Gifu University, Gifu, Japan

The free-breathing radial k-space sampling technique is especially useful for patients with limited breath-holding capacity in liver MR imaging, however, its degradation of spatial resolution in the plane compared with the Cartesian sampling is the greatest disadvantage. We assessed the fat-suppressed three-dimensional T1-weighted fast field echo imaging with pseudo-golden-angle radial stack-of-stars sampling technique with gate and track (3D-VANE) compared with the conventional breath-hold Cartesian sampling (BH-eTHRIVE) in hepatobiliary phase imaging. Our results demonstrated that 3D-VANE with thinner effective slice thickness (thin-slice 3D-VANE) achieved comparable interface resolution, less artifact and better image quality compared with BH-eTHRIVE.

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