Table 2.
MRI and MRE measurements of study participants at baseline and during the immediate (1 month) and late (6 months) postsurgery periods.
| Baseline | Immediate postsurgery | Late postsurgery | p value (immediate postsurgery vs. baseline) | p value (late postsurgery vs. baseline) | p value (overall) | |
|---|---|---|---|---|---|---|
| PDFF (%) | 14.1 ± 7.4 | 8.9 ± 4.4 | 4.9 ± 2.2 | 0.0159 | 0.0018 | 0.0005 |
| T2 (ms) | 30.9 ± 4.5 | 28.9 ± 4.3 | 33.5 ± 4.7 | 0.0810 | 0.0355 | 0.0005 |
| cT1 (ms) | 826.9 ± 80.6 | 787.2 ± 54.3 | 768.4 ± 50.9 | 0.0473 | 0.0722 | 0.0361 |
| MRE LSM (kPa) | 2.34 ± 0.27 | 2.27 ± 0.27 | 2.31 ± 0.33 | 0.6716 | 0.9769 | 0.8228 |
| VAT (cm2) | 208.1 ± 87.3 | 165.1 ± 80.9 | 130.9 ± 72.6 | 0.0021 | 0.0006 | 0.0001 |
| SAT (cm2+) | 363.2 ± 69.5 | 349.0 ± 54.5 | 237.5 ± 3 | 0.3933 | 0.0256 | 0.0104 |
| SMI | 57.3 ± 11.3 | 51.3 ± 10.7 | 48.7 ± 9.7 | <0.0001 | 0.0002 | 0.0001 |
MRE: magnetic resonance elastography; PDFF: proton density fat fraction; cT1: iron-corrected T1. Statistical analyses were performed using repeated measure ANOVA. Postsurgery values in the immediate and late postsurgery period were compared to the baseline using Dunnett's test for multiple comparisons. p < 0.05 is considered statistically significant. +Subcutaneous adipose tissue could not be measured for four subjects as tissue volume exceeded the region of measurement.