2016
DOI: 10.1080/02699052.2016.1219063
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Quantitative structural neuroimaging of mild traumatic brain injury in the Chronic Effects of Neurotrauma Consortium (CENC): Comparison of volumetric data within and across scanners

Abstract: Vigilance when combining data from different sites is suggested and that future efforts address these issues.

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Cited by 18 publications
(11 citation statements)
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“…The 60 scans in the Ochs et al study utilized 29 different scanners. Because variations in MR protocol and scanner hardware are known to be one of the dominant factors preventing direct comparability of MRI volumetry, the present study has a significant advantage over the Ochs et al's study and could be regarded as a novel comparison of FreeSurfer‐ and NeuroQuant®‐derived volumetry.…”
Section: Discussionmentioning
confidence: 94%
“…The 60 scans in the Ochs et al study utilized 29 different scanners. Because variations in MR protocol and scanner hardware are known to be one of the dominant factors preventing direct comparability of MRI volumetry, the present study has a significant advantage over the Ochs et al's study and could be regarded as a novel comparison of FreeSurfer‐ and NeuroQuant®‐derived volumetry.…”
Section: Discussionmentioning
confidence: 94%
“…However, Figure 4 shows a side-by-side boxplot of eTIV and age-adjusted lateral Site differences are also an issue within any multisite study (Nencka et al, 2017), and clearly, there are differences noted across the four MRI acquisition sites, each housing different MRI system platforms from three MRI vendors. As reflected in Figures 1 and 2 and Wilde et al (2016). have shown how site differences result in different volumetric output even in the same individual scanned across different platforms with ostensibly the same MR sequences.…”
Section: Figurementioning
confidence: 86%
“…Also, despite similar to identical image acquisition protocols, differences likely relate to local influences of different MR platforms on image contrasts that subtlety impact how segmentation and classification occur. In a previous CENC investigation, Wilde et al (). have shown how site differences result in different volumetric output even in the same individual scanned across different platforms with ostensibly the same MR sequences.…”
Section: Discussionmentioning
confidence: 96%
“…Additionally, it is relatively insensitive to changes in acquisition parameters (Fischl et al 2004b), making this procedure robust and generalizable across different research settings. While studies show differences in Freesurfer analyses across scanner platforms (Wilde et al 2016), this is likely not problematic in the present study given we only used one scanner.…”
Section: Volumetric Mri Analysismentioning
confidence: 86%