Table 1:

Heterogeneous scanning parameters used for FLAIR sequences in training and validation samples, showing the number of study subjects in each categorya

SummaryTraining (n = 295)Validation (n = 92)
Field strength
    1.5T230 (78.0%)57 (62.0%)
    3T65 (22.0%)35 (38.0%)
Dimension
    2D287 (97.3%)81 (88.0%)
    3D8 (2.7%)11 (12.0%)
Manufacturer/model
    GE Healthcareb
        Discovery MR750w4 (1.4%)3 (3.3%)
        Genesis Signa20 (6.8%)6 (6.5%)
        Optima MR450w15 (5.1%)1 (1.1%)
        Signa Excite20 (6.8%)7 (7.6%)
        Signa HDxt14 (4.7%)7 (7.6%)
    Phillipsc
        Intera2 (0.7%)1 (1.1%)
    Siemensd
        Magnetom Aera15 (5.1%)2 (2.2%)
        Avanto39 (13.2%)8 (8.7%)
        Magnetom Espree83 (28.1%)19 (20.1%)
        Magnetom Essenza9 (3.1%)1 (1.1%)
        Magnetom Skyra8 (2.7%)8 (8.7%)
        Magnetom Symphony4 (1.4%)3 (3.3%)
        Magnetom Symphony Tim5 (1.7%)1 (1.1%)
        Tim Trio37 (12.5%)11 (20.0%)
        Magnetom Verio16 (5.4%)13 (14.1%)
Toshibae
        Titan4 (1.4%)1 (1.1%)
TE (ms)
    Minimum8682
    Median136136
    Maximum396398
TR (ms)
    Minimum50005000
    Median90009000
    Maximum12,00012,000

  • ↵a The percentage of the total training or validation sample is in parentheses.

  • ↵b Milwaukee, Wisconsin.

  • ↵c Best, the Netherlands.

  • ↵d Erlangen, Germany.

  • ↵e Toshiba Medical Systems, Tokyo, Japan.