Abstract #0657
Off-resonance Blurring Tolerant Image Reconstruction of 3D Radial MRI with Linogram Sampling
Naoharu Kobayashi 1 , Djaudat Idiyatullin 1 , Curtis A Corum 1 , and Michael Garwood 1
1
Center for Magnetic Resonance Research,
Department of Radiology, University of Minnesota,
Minneapolis, MN, United States
A 3D radial MRI method tolerant to off-resonance
blurring, which combines linogram k-space sampling,
Hermitian extrapolation and a 3D ultra-short echo time
sequence known as SWIFT, is introduced. The
off-resonance tolerance was tested by simulation and
in
vivo
human
dental imaging at 4T. The proposed method removed
off-resonance blurring that is common in radial MRI
sequences; the off-resonance artifacts became
displacement/distortion of images, which is similar to
Cartesian MRI.
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