Table 3 Differences of spectral parameters among aphthous ulcers, large ulcers and very large ulcers.

Intestinal wall

 SP_40–100

2.16(1.94,2.47)^c

2.51 ± 0.49^b

2.92 ± 0.40^a

< 0.001

2.48 ± 0.30^c

2.72 ± 0.40^b

3.06 ± 0.60^a

< 0.001

 HU_40keV

184.88(167.28,203.16)^c

210.38 ± 37.22^b

242.55 ± 26.95^a

< 0.001

205.13 ± 23.24^c

225.44 ± 29.47^b

252.20 ± 41.69^a

< 0.001

 HU_50keV

134.22(120.08,144.45)^c

150.58 ± 25.83^b

172.93 ± 17.78^a

< 0.001

146.08 ± 16.57^c

160.39 ± 20.32^b

179.12 ± 27.54^a

< 0.001

 HU_60keV

102.33 ± 18.19^c

113.84 ± 19.00^b

130.12 ± 12.37^a

< 0.001

109.77 ± 12.78^c

120.40 ± 14.89^b

134.18 ± 18.97^a

< 0.001

 HU_70keV

82.12 ± 14.51^c

90.94 ± 14.96^b

103.52 ± 9.34^a

< 0.001

87.14 ± 10.68^c

95.52 ± 11.74^b

106.26 ± 13.91^a

< 0.001

 HU_80keV

69.19 ± 12.29^c

76.33 ± 12.51^b

85.65(82.90,87.80)^a

< 0.001

72.66 ± 9.52^c

79.64 ± 9.89^b

88.37 ± 10.82^a

< 0.001

 HU_90keV

60.65 ± 10.96^c

66.63 ± 10.96^b

74.17(72.05,76.15)^a

< 0.001

63.11 ± 8.82^c

69.06 ± 8.73^b

76.57 ± 8.95^a

< 0.001

 HU_100keV

54.72 ± 10.11^c

59.92 ± 9.97^b

66.08(64.83,68.51)^a

< 0.001

56.49 ± 8.41^c

61.77 ± 8.00^b

68.37 ± 7.77^a

< 0.001

Adjacent mesenteric fat

 SP_40–100

−1.24(−1.39,−1.06)^b

−1.15(−1.28,−0.96)^b

−0.79(−0.92,−0.61)^a

< 0.001

−1.04(−1.18,−0.83)^b

−0.99(−1.13,−0.80)^b

−0.55 ± 0.31^a

< 0.001

 HU_40keV

−132.77 ± 22.86^b

−132.71(−147.81,−117.83)^b

−93.18 ± 31.56a

< 0.001

−123.84(−138.46,−101.19)^b

−125.40(−139.17,−106.25)^b

−79.83 ± 35.63^a

< 0.001

 HU_50keV

−104.04 ± 19.13^b

−105.25(−115.83,−93.14)^b

−83.35(−92.95,−54.56)^a

< 0.001

−100.78(−109.94,−81.25)^b

−101.31(−111.67,−87.75)^b

−66.65 ± 29.31^a

< 0.001

 HU_60keV

−86.24 ± 17.28^b

−88.81(−96.78,−77.94)^b

−73.40(−80.66,−45.58)^a

< 0.001

−80.74 ± 16.95^b

−85.14(−95.37,−76.67)^b

−67.56(−79.17,−39.17)^a

< 0.001

 HU_70keV

−75.29 ± 16.30^b

−78.22(−85.86,−69.36)^b

−64.94(−73.26,−40.25)^a

< 0.001

−71.82 ± 15.57^b

−76.58(−86.28,−68.70)^b

−63.06(−71.99,−35.85)^a

< 0.001

 HU_80keV

−68.22 ± 15.83^b

−71.53(−78.42,−64.75)^b

−59.60(−68.57,−36.72)^a

< 0.001

−65.99 ± 14.78^b

−71.06(−80.06,−63.44)^b

−60.03(−66.90,−33.81)^a

< 0.001

 HU_90keV

−63.62 ± 15.50^b

−67.72(−74.10,−60.67)^b

−55.95(−65.65,−34.38)^a

< 0.001

−62.28 ± 14.34^b

−68.28(−75.86,−60.03)^b

−58.67(−63.53,−32.33)^a

< 0.001

 HU_100keV

−60.30 ± 15.34^b

−64.94(−71.17,−57.83)^b

−53.56(−63.29,−32.86)^a

< 0.001

−59.61 ± 14.03^b

−66.06(−72.75,−57.08)^b

−57.11(−60.86,−31.37)^a

< 0.001