Table 1.

Intestinal ultrasound parameters

IUS parameter	Technique/categories	Pathological
Bowel wall thickness	[2 x longitudinal plane + 2 × cross-sectional plane]/4	≥3.0 mm
Colour Doppler signal [modified Limberg score10]	1: absent 2: small spots [single vessels] within the wall 3: long stretches within the wall 4: long stretches extending into the mesentery 5: measurement failed	Category 3 or 4
Wall layer stratification	1: preserved 2:focal loss [< 3 cm extent] 3: extensive loss [≥ 3 cm extent] 4: measurement failed	Category 2 or 3
Presence of inflammatory fat	1: absent;2: uncertain 3: present	Category 3
Presence of enlarged lymph nodes [≥5 mm in shortest axis]	1: absent 2:uncertain 3: present	Category 3
Motility in terminal ileum	1: present 2: uncertain 3: absent	Category 3
Colonic haustrations	1: preserved 2: uncertain 3: loss	Category 3

IUS, intestinal ultrasound.