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Table 2 DCE-MRI Parameters Ktrans and ve calculated with Ind-AIF and Avg-AIF

From: Average arterial input function for quantitative dynamic contrast enhanced magnetic resonance imaging of neck nodal metastases

AIF Ind-AIF* Avg-AIF* Difference between Ind-AIF and Avg-AIF based parameter estimates
ROI Ktrans (min-1) 0.35 ± 0.29 0.23 ± 0.12 0.12 ± 0.08a
Histogram Median Ktrans (min-1) 0.36 ± 0.29 0.22 ± 0.11 0.14 ± 0.09b
ROI ve 0.52 ± 0.51 0.43 ± 0.39 0.09 ± 0.06c
Histogram Median ve 0.37 ± 0.22 0.38 ± 0.19 0.01 ± 0.007d
  1. *Mean ± SD; Student's paired t-test for Ktrans and ve values obtained with Ind-AIF and Avg-AIF; Differences between Ind-and Avg-based parameter estimates: aP = 0.20, bP = 0.18, cP = 0.48, dP = 0.93.
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