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Table 3: Contrast measurements of the DIR, FLAIR, and T2 TSE sequences
Contrast^* Contrast Ratio
DIR FLAIR T2 TSE DIR vs FLAIR^† DIR vs T2 TSE^†
Lesion/NAWM 
Infratentorial 0.460 ± 0.125 0.137 ± 0.060 0.181 ± 0.067 3.36 2.54
Periventricular 0.788 ± 0.098 0.253 ± 0.070 0.341 ± 0.085 3.11 2.31
Deep WM 0.720 ± 0.066 0.217 ± 0.047 0.298 ± 0.070 3.32 2.42
Juxtacortical 0.772 ± 0.110 0.253 ± 0.045 0.335 ± 0.047 3.05 2.30
    Lesion/NAGM 0.190 ± 0.097 0.198 ± 0.064 0.213 ± 0.076 0.96 0.89
    Lesion/CSF 0.832 ± 0.103 0.653 ± 0.243 0.201 ± 0.101 1.27 4.14
Note:—NAWM indicates normal-appearing white matter; WM, white matter; NAGM, normal-appearing grey matter; DIR, double inversion recovery; FLAIR, fluid-attenuated inversion recovery; T2 TSE, T2-weighted turbo spin-echo.
* Data are presented as means ± SD.
† Data are the contrast values of the DIR sequence in relative comparison with the corresponding contrast value of the FLAIR and T2 TSE sequence.