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Erschienen in: Japanese Journal of Radiology 1/2013

01.01.2013 | Original article

Diffusional kurtosis imaging of normal-appearing white matter in multiple sclerosis: preliminary clinical experience

verfasst von: Mariko Yoshida, Masaaki Hori, Kazumasa Yokoyama, Issa Fukunaga, Michimasa Suzuki, Koji Kamagata, Keigo Shimoji, Atsushi Nakanishi, Nobutaka Hattori, Yoshitaka Masutani, Shigeki Aoki

Erschienen in: Japanese Journal of Radiology | Ausgabe 1/2013

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Abstract

Purpose

We evaluated diffusional changes in normal-appearing white matter (NAWM) regions remote from multiple sclerosis (MS) plaques by using diffusional kurtosis imaging (DKI) to investigate the non-Gaussian behavior of water diffusion.

Materials and methods

Participants were 11 MS patients and 6 age-matched healthy volunteers. DKI was performed on a 3-T MR imager. Fractional anisotropy (FA), apparent diffusion coefficient (ADC), and diffusional kurtosis (DK) maps were computed. Regions of interest (ROIs) were compared in 24 cerebral regions, including the frontal, parietal, and temporal lobe white matter (WM) in controls and NAWM in MS patients.

Results

The mean FA of all ROIs was 0.468 ± 0.014 (SD) (controls) or 0.431 ± 0.029 (MS group) (P = 0.016). Mean ADC was 0.785 ± 0.034 × 10−3 mm2/s (controls) or 0.805 ± 0.041 × 10−3 mm2/s (MS group). The mean DK of all ROIs was 0.878 ± 0.020 (controls) or 0.823 ± 0.032 (MS group) (P = 0.002). Analysis of individual ROIs revealed significant differences in DK in 3 ROIs between normal WM and NAWM, but significant differences in ADC and FA in only one ROI each.

Conclusion

DKI may be a new sensitive indicator for detecting tissue damage in MS patients in addition to conventional diffusional evaluations, for example diffusion tensor imaging.
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Metadaten
Titel
Diffusional kurtosis imaging of normal-appearing white matter in multiple sclerosis: preliminary clinical experience
verfasst von
Mariko Yoshida
Masaaki Hori
Kazumasa Yokoyama
Issa Fukunaga
Michimasa Suzuki
Koji Kamagata
Keigo Shimoji
Atsushi Nakanishi
Nobutaka Hattori
Yoshitaka Masutani
Shigeki Aoki
Publikationsdatum
01.01.2013
Verlag
Springer Japan
Erschienen in
Japanese Journal of Radiology / Ausgabe 1/2013
Print ISSN: 1867-1071
Elektronische ISSN: 1867-108X
DOI
https://doi.org/10.1007/s11604-012-0147-7

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