Table 4.
UK Biobank usable modalities in acquisition order. Total subjects: 10,129.
| Modality | Available | Usable |
|---|---|---|
| T1 | 10,102 | 9933 (98.06%) |
| rfMRI | 10,034 | 9558 (94.36%) |
| tfMRI | 9620 | 9182 (90.65%) |
| T2 FLAIR | 9756 | 9045 (89.30%) |
| dMRI | 9566 | 8839 (87.26%) |
| swMRI | 9396 | 9153 (90.36%) |
| All | 8996 | 8211 (81.06%) |
Very early improvements in the dMRI and T2 FLAIR protocols were found to be valuable, resulting in large enough data improvements to outweigh the priority of keeping the protocol fixed (and taking into account the relatively small numbers of datasets affected). This change was made at the beginning of protocol.