Skip to main content

Table 2 DCE-MRI parameters in the model and control groups at each time point

From: Quantitative DCE-MRI: an efficient diagnostic technique for evaluating early micro-environment permeability changes in ankylosing spondylitis

Time Point Model Group Control Group P 95% Confidence Interval for Difference
Ktrans (min − 1)
 Week 12 0.42 ± 0.02 0.43 ± 0.02 0.736 − 0.024 ~ 0.033
 Week 17 0.58 ± 0.03 0.44 ± 0.01 0.000* −0.174 ~ − 0.100
 Week 22 0.94 ± 0.04 0.44 ± 0.03 0.000* −0.552 ~ − 0.446
Kep (min −1)
 Week 12 1.02 ± 0.06 1.18 ± 0.20 0.143 −0.065 ~ 0.376
 Week 17 1.21 ± 0.01 1.18 ± 0.03 0.083 −0.071 ~ 0.005
 Week 22 2.39 ± 0.24 1.15 ± 0.04 0.000* −1.498 ~ −0.988
Ve
 Week 12 0.42 ± 0.02 0.43 ± 0.02 0.656 −0.025 ~ 0.038
 Week 17 0.44 ± 0.01 0.44 ± 0.02 0.581 −0.025 ~ 0.015
 Week 22 0.49 ± 0.01 0.45 ± 0.01 0.000* −0.068 ~ − 0.029
  1. Data are presented as as means±standard deviation. P values for differences between different groups of same time point were determined by independent samples t test.*Statistically significant differences