Abstract #2751
Multi-Venc measurement of phase contrast MRI for improving accuracy of velocity field
Hojin Ha 1 , Guk Bae Kim 2 , Jihoon Kweon 2 , Young-Hak Kim 3 , Namkug Kim 4,5 , Dong Hyun Yang 4 , and Sang Joon Lee 1
1
Department of Mechanical Engineering, Pohang
University of Science and Technology, Pohang, Gyeongbuk,
Korea,
2
Asan
Institute of Life Science, Asan Medical Center,
University of Ulsan College of Medicine, Seoul, Korea,
3
Department
of Cardiology, Asan Medical Center, University of Ulsan
College of Medicine, Seoul, Korea,
4
Department
of Radiology, Asan Medical Center, University of Ulsan
College of Medicine, Seoul, Korea,
5
Department
of Convergence Medicine, Asan Medical Center, University
of Ulsan College of Medicine, Seoul, Korea
The present study aims to improve accuracy and noise
level of four-dimensional velocity encoding (VENC) MRI
by employing multiple VENC parameters. A 4D PC-MRI
sequence with five different VENC parameters was
employed to measure three dimensional flow field in a
stenosis flow phantom. The velocity field from larger
VENC value was combined with that of smaller VENC value
unless the velocity data are lost by phase-aliasing and
phase dispersion. Results showed that multi-VENC
overlapping significantly increased accuracy of the flow
measurement with reduction of the noise, and wide
velocity dynamics range.
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