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Abstract #4101

Intra-session and Inter-session Repeatability of Diffusion Tensor Measurement in Normal Human Liver

Oi Lei Wong 1 , Gladys Goh Lo 2 , Wing Wa Li 2 , Jing Yuan 3 , Raymond Lee 2 , and Michael D. Noseworthy 4

1 Department of Medical Physics and Applied Radiation Science, McMaster University, Hamilton, Ontario, Canada, 2 Department of Diagnostic & Interventional Radiology, Hong Kong Sanatorium & Hospital, Hong Kong, China, 3 Medical Physics and Research Department, Hong Kong Sanatorium & Hospital, Hong Kong, China, 4 Department of Electrical and Computer Engineering, McMaster Univeristy, Hamilton, Ontario, Canada

Liver DTI metrics consistency is closely related to its usefulness in treatment outcome evaluation and disease monitoring. In this study, the inter-session and intra-session repeatability of DT metrics were evaluated. Based on our results, liver DT metrics were repeatable (for both inter-session and intra-session) when large ROI was used. Also, no improvement in DT metrics repeatability was observed when number of gradient directions increased.

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