Intestinal ultrasound for monitoring postoperative Crohn’s disease: A systematic review and clinical implications

Table 5 Comparison of diagnostic performance of intestinal ultrasound parameters with endoscopic findings (Rutgeerts score) in postoperative Crohn’s disease

Ref.	Year	Sample size	IUS parameters	Reference standard	Agreement (κ)	AUROC	Sensitivity	Specificity	Key findings
Yebra Carmona et al[11]	2022	39	BWT > 3 mm + Limberg score > 1	Rutgeerts ≥ i2	0.5	0.75	81.0%	87.0%	IUS had higher diagnostic accuracy than clinical or lab parameters.
Macedo et al[18]	2022	39	BWT > 3 mm and/or Limberg score > 1	Rutgeerts ≥ i2	0.5	0.75	88.9%	61.9%	Loss of wall stratification and hyperemia were most predictive of recurrence.

IUS: Intestinal ultrasound; BWT: Bowel wall thickness; AUROC: Area under the receiver operating characteristic curve.