Comparison of structural MRI brain measures between 1.5 and 3 T: Data from the Lothian Birth Cohort 1936

被引:13
作者
Buchanan, Colin R. [1 ,2 ,3 ]
Maniega, Susana Munoz [1 ,3 ,4 ]
Hernandez, Maria C. Valdes [1 ,3 ,4 ]
Ballerini, Lucia [1 ,3 ,4 ]
Barclay, Gayle [4 ]
Taylor, Adele M. [1 ,2 ]
Russ, Tom C. [1 ,4 ,5 ]
Tucker-Drob, Elliot M. [6 ]
Wardlaw, Joanna M. [1 ,3 ,4 ]
Deary, Ian J. [1 ,2 ]
Bastin, Mark E. [1 ,3 ,4 ]
Cox, Simon R. [1 ,2 ,3 ]
机构
[1] Univ Edinburgh, Lothian Birth Cohorts Grp, Edinburgh, Midlothian, Scotland
[2] Univ Edinburgh, Dept Psychol, Edinburgh, Midlothian, Scotland
[3] Scottish Imaging Network, Edinburgh, Midlothian, Scotland
[4] Univ Edinburgh, Ctr Clin Brain Sci, Edinburgh, Midlothian, Scotland
[5] Univ Edinburgh, Alzheimer Scotland Dementia Res Ctr, Edinburgh, Midlothian, Scotland
[6] Univ Texas Austin, Dept Psychol, Austin, TX 78712 USA
基金
英国医学研究理事会; 美国国家卫生研究院; 英国惠康基金;
关键词
brain; connectome; diffusion MRI; multi-site; reliability; structural MRI; TEST-RETEST RELIABILITY; FIELD-STRENGTH; CORTICAL THICKNESS; GRAY-MATTER; SEGMENTATION; SCANNER; REPRODUCIBILITY; TRACTOGRAPHY; NETWORKS; SEQUENCE;
D O I
10.1002/hbm.25473
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Multi-scanner MRI studies are reliant on understanding the apparent differences in imaging measures between different scanners. We provide a comprehensive analysis of T-1-weighted and diffusion MRI (dMRI) structural brain measures between a 1.5 T GE Signa Horizon HDx and a 3 T Siemens Magnetom Prisma using 91 community-dwelling older participants (aged 82 years). Although we found considerable differences in absolute measurements (global tissue volumes were measured as similar to 6-11% higher and fractional anisotropy [FA] was 33% higher at 3 T than at 1.5 T), between-scanner consistency was good to excellent for global volumetric and dMRI measures (intraclass correlation coefficient [ICC] range: .612-.993) and fair to good for 68 cortical regions (FreeSurfer) and cortical surface measures (mean ICC: .504-.763). Between-scanner consistency was fair for dMRI measures of 12 major white matter tracts (mean ICC: .475-.564), and the general factors of these tracts provided excellent consistency (ICC >= .769). Whole-brain structural networks provided good to excellent consistency for global metrics (ICC >= .612). Although consistency was poor for individual network connections (mean ICCs: .275-.280), this was driven by a large difference in network sparsity (.599 vs. .334), and consistency was improved when comparing only the connections present in every participant (mean ICCs: .533-.647). Regression-based k-fold cross-validation showed that, particularly for global volumes, between-scanner differences could be largely eliminated (R-2 range .615-.991). We conclude that low granularity measures of brain structure can be reliably matched between the scanners tested, but caution is warranted when combining high granularity information from different scanners.
引用
收藏
页码:3905 / 3921
页数:17
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