Table 2 The results of the inter observer agreement of 17 unenhanced CT imaging indicators by two imaging radiologists

Increased attenuation of small bowel wall

0.908^*

CT value of small bowel wall

0.725 (0.649–0.788)^#

Small bowel wall annular thickening

0.959^*

Small bowel lumen dilation

0.954^*

Maximum diameter of small bowel lumen dilation

0.854 (0.809–0.889)^#

Mesenteric ground glass sign

0.839 ^*

CT value of mesenteric vessel

0.885 (0.849–0.913)^#

Difference of CT value between mesenteric vessel and aorta

0.835 (0.785–0.874)^#

Mesenteric vasodilation

0.792^*

Diffuse mesenteric haziness

0.884^*

Small bowel fecal gas sign

0.849^*

U-/C-shaped small bowel loop

0.938^*

Ascites

1^*

Peritoneal thickening

0.967^*

Pneumatosis intestinalis

0.854^*

Portal venous gas

1^*

Whirlpool sign

0.788^*