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Table 5 ADC values (× 10-6 mm2/s) of PVP vials in the phantom study according to DWI type

From: Thin-slice reverse encoding distortion correction DWI facilitates visualization of non-functioning pituitary neuroendocrine tumor (PitNET)/pituitary adenoma and surrounding normal structures

%PVP

AP-DWI

B0-corrected-DWI

RDC-DWI

Ground truth

p-value

0%

1,128.4 ± 28.3

1,126.3 ± 30.4

1,123.4 ± 18.6

1,090 ± 9

0.763a, 0.196b, 1.000c

10%

848.3 ± 2.9

850.1 ± 8.1

832.0 ± 1.2

825 ± 8

1.000a, < 0.001b, c

20%

619.3 ± 9.1

624.7 ± 10.4

606.1 ± 10.6

598 ± 7

0.002a, < 0.001b, c

30%

427.8 ± 19.1

430.9 ± 23.4

428.4 ± 19.1

396 ± 5

0.299a, 1.000b, 0.674c

40%

256.0 ± 13.49

264.2 ± 23.4

259.3 ± 9.8

237 ± 6

0.165a, 0.057b, 0.896c

  1. Data are presented as the mean ± standard deviation. The 50% PVP data were discarded because of air contamination
  2. aAP-DWI versus B0-corrected-DWI
  3. bAP-DWI versus RDC-DWI
  4. cB0-corrected-DWI versus RDC-DWI
  5. ADC Apparent diffusion coefficient, AP Anterior-posterior, DWI Diffusion-weighted imaging, PVP Polymerpolyvinylpyrrolidone, RDC-DWI Reverse encoding distortion correction DWI