Title :
Correction of artifacts in diffusion-weighted MR images
Author :
Petr Marcoň;Karel Bartušek;Radim Kořínek;Zdeněk Dokoupil
Author_Institution :
Department of Theoretical and Experimental Electrical Engineering FEEC BUT, Kolejni 4, 612 00 Brno, Czech Republic
Abstract :
The authors describe the techniques for measuring diffusion coefficients and creating DWI and DTI images. In order to increase the accuracy of diffusion coefficient measurement, it is necessary to eliminate the influence of artifacts such as the influence of magnetic field inhomogeneity, eddy currents, or temperature. For these artifact sources, the article presents experimental detection of the magnitude of errors, which is realized using the three measurements method, and proposes correction possibilities. The results are compared with diffusion measurements at different sizes of 6-factors.
Keywords :
"Temperature measurement","Magnetic field measurement","Diffusion tensor imaging","Magnetic fields","Ellipsoids","Measurement uncertainty","Current measurement"
Conference_Titel :
Telecommunications and Signal Processing (TSP), 2011 34th International Conference on
Print_ISBN :
978-1-4577-1410-8
DOI :
10.1109/TSP.2011.6043703