DocumentCode :
1772095
Title :
A preliminary study on the effect of motion correction on HARDI reconstruction
Author :
Elhabian, Shireen ; Gur, Yaniv ; Vachet, Clement ; Piven, Joseph ; Styner, Martin ; Leppert, Ilana ; Pike, G. Bruce ; Gerig, Guido
Author_Institution :
Sci. Comput. & Imaging Inst., Salt Lake City, UT, USA
fYear :
2014
fDate :
April 29 2014-May 2 2014
Firstpage :
1055
Lastpage :
1058
Abstract :
Post-acquisition motion correction is widely performed in diffusion-weighted imaging (DWI) to guarantee voxel-wise correspondence between DWIs. Whereas this is primarily motivated to save as many scans as possible if corrupted by motion, users do not fully understand the consequences of different types of interpolation schemes on the final analysis. Nonetheless, interpolation might increase the partial volume effect while not preserving the volume of the diffusion profile, whereas excluding poor DWIs may affect the ability to resolve crossing fibers especially with small separation angles. In this paper, we investigate the effect of interpolating diffusion measurements as well as the elimination of bad directions on the reconstructed fiber orientation diffusion functions and on the estimated fiber orientations. We demonstrate such an effect on synthetic and real HARDI datasets. Our experiments demonstrate that the effect of interpolation is more significant with small fibers separation angles where the exclusion of motion-corrupted directions decreases the ability to resolve such crossing fibers.
Keywords :
biodiffusion; biomedical MRI; interpolation; medical image processing; motion estimation; HARDI reconstruction; bad direction elimination; crossing fibers; diffusion profile volume; diffusion-weighted imaging; fiber orientation estimation; high angular resolution diffusion imaging; interpolating diffusion measurement effect; interpolation schemes; motion-corrupted direction exclusion; partial volume effect; post-acquisition motion correction effect; reconstructed fiber orientation diffusion functions; small fibers separation angles; voxel-wise correspondence; Biomedical imaging; Diffusion tensor imaging; Image reconstruction; Interpolation; Tensile stress; Diffusion MRI; HARDI; interpolation; motion correction;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Biomedical Imaging (ISBI), 2014 IEEE 11th International Symposium on
Conference_Location :
Beijing
Type :
conf
DOI :
10.1109/ISBI.2014.6868055
Filename :
6868055
Link To Document :
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