Heterogeneity of Multiple Sclerosis Lesions in Multislice Myelin Water Imaging.
<h4>Purpose</h4>To assess neuroprotection and remyelination in Multiple Sclerosis (MS), we applied a more robust myelin water imaging (MWI) processing technique, including spatial priors into image reconstruction, which allows for lower SNR, less averages and shorter acquisition times. W...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2016-01-01
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| Series: | PLoS ONE |
| Online Access: | https://doi.org/10.1371/journal.pone.0151496 |
| _version_ | 1818666876031467520 |
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| author | Tobias Djamsched Faizy Christian Thaler Dushyant Kumar Jan Sedlacik Gabriel Broocks Malte Grosser Jan-Patrick Stellmann Christoph Heesen Jens Fiehler Susanne Siemonsen |
| author_facet | Tobias Djamsched Faizy Christian Thaler Dushyant Kumar Jan Sedlacik Gabriel Broocks Malte Grosser Jan-Patrick Stellmann Christoph Heesen Jens Fiehler Susanne Siemonsen |
| author_sort | Tobias Djamsched Faizy |
| collection | DOAJ |
| description | <h4>Purpose</h4>To assess neuroprotection and remyelination in Multiple Sclerosis (MS), we applied a more robust myelin water imaging (MWI) processing technique, including spatial priors into image reconstruction, which allows for lower SNR, less averages and shorter acquisition times. We sought to evaluate this technique in MS-patients and healthy controls (HC).<h4>Materials and methods</h4>Seventeen MS-patients and 14 age-matched HCs received a 3T Magnetic Resonance Imaging (MRI) examination including MWI (8 slices, 12 minutes acquisition time), T2w and T1mprage pre and post gadolinium (GD) administration. Black holes (BH), contrast enhancing lesions (CEL) and T2 lesions were marked and registered to MWI. Additionally, regions of interest (ROI) were defined in the frontal, parietal and occipital normal appearing white matter (NAWM)/white matter (WM), the corticospinal tract (CST), the splenium (SCC) and genu (GCC) of the corpus callosum in patients and HCs. Mean values of myelin water fraction (MWF) were determined for each ROI.<h4>Results</h4>Significant differences (p≤0.05) of the MWF were found in all three different MS-lesion types (BH, CEL, T2 lesions), compared to the WM of HCs. The mean MWF values among the different lesion types were significantly differing from each other. Comparing MS-patients vs. HCs, we found a significant (p≤0.05) difference of the MWF in all measured ROIs except of GCC and SCC. The mean reduction of MWF in the NAWM of MS-patients compared to HCs was 37%. No age, sex, disability score and disease duration dependency was found for the NAWM MWF.<h4>Conclusion</h4>MWF measures were in line with previous studies and lesions were clearly visible in MWI. MWI allows for quantitative assessment of NAWM and lesions in MS, which could be used as an additional sensitive imaging endpoint for larger MS studies. Measurements of the MWF also differ between patients and healthy controls. |
| first_indexed | 2024-12-17T06:11:29Z |
| format | Article |
| id | doaj.art-09514be59f2441a494508967adda5fa2 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-17T06:11:29Z |
| publishDate | 2016-01-01 |
| publisher | Public Library of Science (PLoS) |
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| series | PLoS ONE |
| spelling | doaj.art-09514be59f2441a494508967adda5fa22022-12-21T22:00:36ZengPublic Library of Science (PLoS)PLoS ONE1932-62032016-01-01113e015149610.1371/journal.pone.0151496Heterogeneity of Multiple Sclerosis Lesions in Multislice Myelin Water Imaging.Tobias Djamsched FaizyChristian ThalerDushyant KumarJan SedlacikGabriel BroocksMalte GrosserJan-Patrick StellmannChristoph HeesenJens FiehlerSusanne Siemonsen<h4>Purpose</h4>To assess neuroprotection and remyelination in Multiple Sclerosis (MS), we applied a more robust myelin water imaging (MWI) processing technique, including spatial priors into image reconstruction, which allows for lower SNR, less averages and shorter acquisition times. We sought to evaluate this technique in MS-patients and healthy controls (HC).<h4>Materials and methods</h4>Seventeen MS-patients and 14 age-matched HCs received a 3T Magnetic Resonance Imaging (MRI) examination including MWI (8 slices, 12 minutes acquisition time), T2w and T1mprage pre and post gadolinium (GD) administration. Black holes (BH), contrast enhancing lesions (CEL) and T2 lesions were marked and registered to MWI. Additionally, regions of interest (ROI) were defined in the frontal, parietal and occipital normal appearing white matter (NAWM)/white matter (WM), the corticospinal tract (CST), the splenium (SCC) and genu (GCC) of the corpus callosum in patients and HCs. Mean values of myelin water fraction (MWF) were determined for each ROI.<h4>Results</h4>Significant differences (p≤0.05) of the MWF were found in all three different MS-lesion types (BH, CEL, T2 lesions), compared to the WM of HCs. The mean MWF values among the different lesion types were significantly differing from each other. Comparing MS-patients vs. HCs, we found a significant (p≤0.05) difference of the MWF in all measured ROIs except of GCC and SCC. The mean reduction of MWF in the NAWM of MS-patients compared to HCs was 37%. No age, sex, disability score and disease duration dependency was found for the NAWM MWF.<h4>Conclusion</h4>MWF measures were in line with previous studies and lesions were clearly visible in MWI. MWI allows for quantitative assessment of NAWM and lesions in MS, which could be used as an additional sensitive imaging endpoint for larger MS studies. Measurements of the MWF also differ between patients and healthy controls.https://doi.org/10.1371/journal.pone.0151496 |
| spellingShingle | Tobias Djamsched Faizy Christian Thaler Dushyant Kumar Jan Sedlacik Gabriel Broocks Malte Grosser Jan-Patrick Stellmann Christoph Heesen Jens Fiehler Susanne Siemonsen Heterogeneity of Multiple Sclerosis Lesions in Multislice Myelin Water Imaging. PLoS ONE |
| title | Heterogeneity of Multiple Sclerosis Lesions in Multislice Myelin Water Imaging. |
| title_full | Heterogeneity of Multiple Sclerosis Lesions in Multislice Myelin Water Imaging. |
| title_fullStr | Heterogeneity of Multiple Sclerosis Lesions in Multislice Myelin Water Imaging. |
| title_full_unstemmed | Heterogeneity of Multiple Sclerosis Lesions in Multislice Myelin Water Imaging. |
| title_short | Heterogeneity of Multiple Sclerosis Lesions in Multislice Myelin Water Imaging. |
| title_sort | heterogeneity of multiple sclerosis lesions in multislice myelin water imaging |
| url | https://doi.org/10.1371/journal.pone.0151496 |
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