Quantitative susceptibility mapping in multiple sclerosis: A systematic review and meta-analysis

被引:3
|
作者
Voon, Cui Ci [1 ]
Wiltgen, Tun [1 ]
Wiestler, Benedikt [2 ]
Schlaeger, Sarah [2 ]
Muehlau, Mark [1 ,3 ,4 ]
机构
[1] Tech Univ Munich, Sch Med & Hlth, Dept Neurol, Munich, Germany
[2] Tech Univ Munich, Sch Med, TUM Neuroimaging Ctr, Munich, Germany
[3] Tech Univ Munich, Sch Med, Dept Neuroradiol, Munich, Germany
[4] Tech Univ Munich, Sch Med, Dept Neurol, Ismaninger Str 22, D-81675 Munich, Germany
关键词
Systematic review; Meta-analysis; Multiple sclerosis; Quantitative susceptibility mapping; White matter lesion; Brain atrophy; DEEP GRAY-MATTER; APPEARING WHITE-MATTER; MAGNETIC-SUSCEPTIBILITY; BRAIN IRON; MRI; LESIONS; HETEROGENEITY; DISEASE; MYELIN; QSM;
D O I
10.1016/j.nicl.2024.103598
中图分类号
R445 [影像诊断学];
学科分类号
100207 ;
摘要
Background: Quantitative susceptibility mapping (QSM) is a quantitative measure based on magnetic resonance imaging sensitive to iron and myelin content. This makes QSM a promising non-invasive tool for multiple sclerosis (MS) in research and clinical practice. Objective: We performed a systematic review and meta -analysis on the use of QSM in MS. Methods: Our review was prospectively registered on PROSPERO (CRD42022309563). We searched five databases for studies published between inception and 30th April 2023. We identified 83 English peer -reviewed studies that applied QSM images on MS cohorts. Fifty-five included studies had at least one of the following outcome measures: deep grey matter QSM values in MS, either compared to healthy controls (HC) (k = 13) or correlated with the score on the Expanded Disability Status Scale (EDSS) (k = 7), QSM lesion characteristics (k = 22) and their clinical correlates (k = 17), longitudinal correlates (k = 11), histological correlates (k = 7), or correlates with other imaging techniques (k = 12). Two meta -analyses on deep grey matter (DGM) susceptibility data were performed, while the remaining findings could only be analyzed descriptively. Results: After outlier removal, meta -analyses demonstrated a significant increase in the basal ganglia susceptibility (QSM values) in MS compared to HC, caudate (k = 9, standardized mean difference (SDM) = 0.54, 95 % CI = 0.39-0.70, I 2 = 46 %), putamen (k = 9, SDM = 0.38, 95 % CI = 0.19-0.57, I 2 = 59 %), and globus pallidus (k = 9, SDM = 0.48, 95 % CI = 0.28-0.67, I 2 = 60 %), whereas thalamic QSM values exhibited a significant reduction (k = 12, SDM = -0.39, 95 % CI = - 0.66-- 0.12, I 2 = 84 %); these susceptibility differences in MS were independent of age. Further, putamen QSM values positively correlated with EDSS (k = 4, r = 0.36, 95 % CI = 0.16-0.53, I 2 = 0 %). Regarding rim lesions, four out of seven studies, representing 73 % of all patients, reported rim lesions to be associated with more severe disability. Moreover, lesion development from initial detection to the inactive stage is paralleled by increasing, plateauing (after about two years), and gradually decreasing QSM values, respectively. Only one longitudinal study provided clinical outcome measures and found no association. Histological data suggest iron content to be the primary source of QSM values in DGM and at the edges of rim lesions; further, when also considering data from myelin water imaging, the decrease of myelin is likely to drive the increase of QSM values within WM lesions. Conclusions: We could provide meta -analytic evidence for DGM susceptibility changes in MS compared to HC; basal ganglia susceptibility is increased and, in the putamen, associated with disability, while thalamic susceptibility is decreased. Beyond these findings, further investigations are necessary to establish the role of QSM in MS for research or even clinical routine.
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页数:15
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