Table 2. MR Enterography Scoring System for Bowel Inflammation Severity.

Parameter	Scoring
	0	1	2	3
Bowel wall thickness, mm	1–3	> 3–5	> 5–7	> 7
Mural SI on T2 weighted image	Equivalent to that of normal bowel wall	Minor increase in SI	Moderate increase in SI	Marked increase in SI: bowel wall contains areas of high SI, approaching that of the luminal content
Perimural SI on T2 weighted images	Equivalent to that of normal mesentery	Increase in mesenteric SI but no fluid collection	Small fluid rim (≤ 2 mm)	Large fluid rim (> 2 mm)

SI = signal intensity