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Table 1 IUS scores and CEUS parameters

From: Ultrasonographic scores for ileal Crohn’s disease assessment: Better, worse or the same as contrast-enhanced ultrasound?

SUS-CD [21]

BWT + CDS

 

0

1

2

3

BWT

 < 3.0 mm

3.0–4.9 mm

5.0–7.9 mm

 ≥ 8.0 mm

CDS

No or single vessel

2–5 vessels/cm2

 > 5 vessels/cm2

-

IBUS-SAS [22]

4 × BWT + 15 × i-fat + 7 × CDS + 4 × BWS

BWT

Quantitative measure in mm

 

0

1

2

3

i-fat

Absent

Uncertain

Present

-

CDS

Absent

Short signals

Long signals inside bowel

Long signals inside and outside bowel

BWS

Normal

Uncertain

Focal (≤ 3 cm)

Extensive (> 3 cm)

CEUS

Peak intensity

Peak intensity

Quantitative measure based on time intensity curve

  1. IUS Intestinal ultrasound; CEUS Contrast ultrasound; SUS-CD Simple Ultrasound Activity Score for CD; BWT Bowel wall thickness; CDS Color Doppler signal; IBUS-SAS International Bowel Ultrasound Segmental Activity Score; i-fat Inflammatory fat; BWS Bowel wall stratification.