Highly-Accelerated Multi-shot Diffusion Imaging with High Angular Resolution Enabled by k-d SVD
Shihui Chen1 and Hing-Chiu Chang1
1Department of Diagnostic Radiology, The University of Hong Kong, Hong Kong, Hong Kong
The reconstruction scheme
based on k-d SVD for high angular resolution diffusion imaging (HARDI) can provide images with improved quality at a
high in-plane acceleration factor without the limitation by the number of
coils.
Figure 1 (a) The proposed design of interleaved DW-EPI with
navigator echo. The acceleration factor R of imaging can be 4, 8, or 16, while
R for the navigator echo is fixed at 4. (b) The reconstruction pipeline based
on proposed k-d SVD with contrast compensation at final step.
Figure 5 (a)The comparison of colour FA map derived from
gold standard images and the images reconstructed with the different strategies
in Simulation 1. (b) The comparison of colour FA map derived from gold standard
images and our proposed k-d SVD method at different acceleration factors (R =
4/8/16).