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Insights into Imaging

Table 3 Spectral quantitative parameters of creeping fat with inactive and active Crohn’s disease

From: CT energy spectral parameters of creeping fat in Crohn’s disease and correlation with inflammatory activity

Quantitative parameter

Inactive CD (n = 14)

Active CD (n = 26)

p value*

λHU (HU/keV) at the enteric phase

 − 0.28 (− 0.73 to − 0.11)

1.00 (0.53–1.57)

 < 0.001

NFIC at the enteric phase

1.02 (1.00–1.04)

1.07 (1.04–1.08)

 < 0.001

NFWC at the enteric phase

0.52 (0.14–1.00)

 − 0.77 (− 0.97 to − 0.35)

 < 0.001

NFVF at the enteric phase

0.79 (0.67–0.92)

0.29 (0.20–0.38)

 < 0.001

  1. *Mann–Whitney U test
  2. λHU, slope of the spectral Hounsfield unit curve; NFIC, normalised fat-iodine concentration; NFWC, normalised fat–water concentration; HU, Hounsfield unit; NFVF, normalised fat volume fraction
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