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Table 6 Intra-reader agreement and 95% confidence intervals for reader 1 and reader 2 for all measured MRI parameters

From: Limited role of DWI with apparent diffusion coefficient mapping in breast lesions presenting as non-mass enhancement on dynamic contrast-enhanced MRI

ADC metric

Reader 1

Reader 2

Rho-c (95% confidence Interval)

Strength of agreement

Rho-c (95% confidence interval)

Strength of agreement

Wtu max ADC

0.37 (0.41, 0.74)

Fair

0.24 (0.07, 0.41)

Slight

Wtu mean ADC

0.44 (0.26, 0.61)

Moderate

0.41 (0.21, 0.62)

Moderate

Wtu min ADC

0.21 (− 0.02, 0.44)

Slight

0.29 (0.09, 0.48)

Slight

Dptu max ADC

0.18 (− 0.06, 0.41)

Slight

0.33 (0.11, 0.54)

Fair

Dptu mean ADC

0.39 (0.20, 0.59)

Fair

0.05 (− 0.01, 0.12)

Slight

Dptu min ADC

0.37 (0.41, 0.74)

Fair

0.24 (0.07, 0.41)

Slight

Ptu mean ADC

0.44 (0.26, 0.61)

Moderate

0.41 (0.21, 0.62)

Moderate

  1. ADC apparent diffusion coefficient, Wtu, whole tumor, Dptu darkest part of the tumor, Ptu point tumor, max maximum, min minimum