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Table 4 Summary of quantitative analyses

From: Dynamic contrast-enhanced MR imaging in identifying active anal fistula after surgery

Parameters

Active fistula

Postoperative healing/granulation tissue

I (n = 23)

II ≤ 75 days (n = 11)

III > 75 days (n = 11)

IV Total (n = 22)

WI (a.u.)

6.07 ± 5.42

2.82 ± 2.36

2.92 ± 2.44

2.92 ± 2.76

WO (a.u.)

0.12 ± 0.30

0.29 ± 0.12

0.25 ± 0.22

0.26 ± 0.19

TTP (sec)

34.60 ± 13.50

44.30 ± 21.10

34.97 ± 15.70

38.55 ± 16.24

PEI (a.u.)

145.57 ± 79.30

109.57 ± 78.10

96.37 ± 65.20

102.15 ± 63.10

AUC (a.u.)

322.73 ± 132.47

283.50 ± 209.03

232.93 ± 140.10

239.93 ± 161.26

NSI (a.u.)

0.95 ± 0.86

1.69 ± 0.71

1.52 ± 0.44

1.57 ± 0.47

  1. WI Wash-in, WO Wash-out, TTP Time to peak, PEI Peak enhancement intensity, AUC Area under the curve, NSI Normalized signal intensity
  2. I = the group of active fistula, II = the group of postoperative healing tissue within 75 days, III = the group of postoperative healing tissue over 75 days, IV = the group of postoperative healing tissue for total days
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BMC Medical Imaging

ISSN: 1471-2342

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