Abstract #2294
The merged images with different central frequencies can reduce banding artifact of 3D-SSFP MR cisternography
Koji Matsumoto 1,2 , Hajime Yokota 3,4 , Hiroki Mukai 4 , Ken Motoori 4 , Toshiaki Miyachi 2 , Yoshitada Masuda 1 , and Takashi Uno 4
1
Department of Radiology, Chiba University
Hospital, Chiba, Chiba, Japan,
2
Division
of Health Sciences, Kanazawa University, Kanazawa,
Ishikawa, Japan,
3
Department
of Radiology, Kyoto Prefectural University of Medicine,
Kyoto, Japan,
4
Diagnostic
Radiology and Radiation Oncology, Chiba University,
Chiba, Japan
Magnetic resonance (MR) cisternography using three
dimensions steady-state free precession (3D-SSFP) is
widely used for visualizing the inner ear. However,
local magnetic field of the inner ear is easy to be
heterogeneous due to surrounding air cells. The
heterogeneity causes phase shift in pixels and banding
artifact on 3D-SSFP. Although addiction of changing
phase cycling is used to reduce banding artifact, it is
available only in advanced machines. Varying central
frequency can cause phase shift and change locations of
banding artifact. The merged images with different
central frequencies can reduce banding artifact of
3D-SSFP.
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