Abstract #3998
Evaluation of Pseudo-Hepatic Anisotropy Artifact in Liver Intravoxel Incoherent Motion (IVIM) based on Clustering Technique
Oi Lei Wong 1,2 , Gladys Goh Lo 3 , Jing Yuan 4 , Wai Kit Chung 3 , Max W. K. Law 4 , Benny W. H. Ho 3 , and Michael D. Noseworthy 2,5
1
Department of Medical Physics and Applied
Radiation Science, McMaster University, Hamilton,
Ontario, Canada,
2
Imaging
Research Center, St.Joseph's Healthcare, Hamilton,
Ontario, Canada,
3
Department
of Diagnostic & Interventional Radiology, Hong Kong
Sanatorium & Hospital, Hong Kong, China,
4
Medical
Physics and Research Department, Hong Kong Sanatorium &
Hospital, Hong Kong, China,
5
Department
of Electrical and Computer Engineering, McMaster
Univeristy, Hamilton, Ontario, Canada
Pseudo-hepatic anisotropy artifact has been related to
elevation in liver ADC and DT metrics. In this study, we
assumed pseudo-hepatic artifact mainly affect perfusion
related IVIM metrics. As a result, three type of liver
tissue (liver parenchyma, motion contaminated liver
parenchyma and vessel) can be identified due to the
presence of pseudo-hepatic anisotropy artifact. Based on
our result, we have revealed that the effect of
pseudo-anitotropy artifact can be minimized using
multiple gradient encoding directions.
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