Analyzing diffusion tensor images with ghosting artifacts: the effects of direct and indirect normalization.
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Shen, S and Sterr, A (2010) Analyzing diffusion tensor images with ghosting artifacts: the effects of direct and indirect normalization. Magnetic Resonance Imaging, 28 (10). pp. 1507-1513.
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Shan STERR 2010 Analizing diffusion tensor images.pdf Restricted to Repository staff only Available under License : See the attached licence file. Download (452kB) |
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Abstract
The current study aims to assess the applicability of direct or indirect normalization for the analysis of fractional anisotropy (FA) maps in the context of diffusion-weighted images (DWIs) contaminated by ghosting artifacts. We found that FA maps acquired by direct normalization showed generally higher anisotropy than indirect normalization, and the disparities were aggravated by the presence of ghosting artifacts in DWIs. The voxel-wise statistical comparisons demonstrated that indirect normalization reduced the influence of artifacts and enhanced the sensitivity of detecting anisotropy differences between groups. This suggested that images contaminated with ghosting artifacts can be sensibly analyzed using indirect normalization.
| Item Type: | Article | |||||||||
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| Divisions : |
Faculty of Arts and Social Sciences Faculty of Arts and Social Sciences |
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| Date : | December 2010 | |||||||||
| DOI : | 10.1016/j.mri.2010.06.010 | |||||||||
| Uncontrolled Keywords : | Adult, Aged, Algorithms, Artifacts, Brain, Diffusion Magnetic Resonance Imaging, Female, Humans, Image Enhancement, Image Interpretation, Computer-Assisted, Male, Middle Aged, Pattern Recognition, Automated, Reproducibility of Results, Sensitivity and Specificity, Stroke, Subtraction Technique, Young Adult | |||||||||
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| Depositing User : | Symplectic Elements | |||||||||
| Date Deposited : | 28 Mar 2017 15:50 | |||||||||
| Last Modified : | 31 Oct 2017 14:30 | |||||||||
| URI: | http://epubs.surrey.ac.uk/id/eprint/327559 |
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