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Table 2 Relative percentage error (RPE) in parameters, derived from DCE-MRI data analysis

From: Evaluation of B1 inhomogeneity effect on DCE-MRI data analysis of brain tumor patients at 3T

  Relative % error (mean ± S.D)
B1 Ktrans Ve Vp CBV CBF CBV_Corr
0.95–1 − 0.85 ± 0.70 − 0.96 ± 0.87 − 0.42 ± 1.33 − 1.02 ± 0.794 − 1.22 ± 0.786 − 0.84 ± 0.815
1–1.05 0.26 ± 1.80 9.10 ± 17.99 1.25 ± 0.80 1.28 ± 0.50 1.17 ± 0.408 1.66 ± 1.91
1.05–1.10 3.77 ± 1.19 5.50 ± 2.80 3.03 ± 1.65 3.49 ± 0.95 3.27 ± 1.47 2.75 ± 0.76
1.10–1.15 5.62 ± 2.52 19.12 ± 13.10 6.64 ± 3.41 6.01 ± 1.79 6.44 ± 2.48 4.19 ± 1.23
1.15–1.20 9.74 ± 2.44 14.78 ± 9.84 7.22 ± 1.70 8.48 ± 0.92 9.49 ± 3.63 7.12 ± 1.28
1.20–1.25* 12.91 12.86 9.70 10.51 10.52 9.69
  1. RPE of each parameter from brain tumor of 35 patients were grouped based upon range of B1rel value
  2. * This group had only one patient and hence no S.D