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Table 2 Ratings of handheld ultrasound devices per point-of-care ultrasound experts

From: Comparison of four handheld point-of-care ultrasound devices by expert users

Variable

Rating per experts (n = 24) [mean (sd)]

p-value

Butterfly iQ+™

Kosmos™

Lumify™

Vscan Air™

Ease of use

 Physical characteristics

3.75 (0.9)

3.54 (0.8)

4.17 (0.6)

4.42 (0.6)

 < 0.001

 Software

4.38 (0.7)

3.79 (0.8)

4.17 (0.7)

4.25 (0.9)

0.059

 Maneuverability

4.38 (0.7)

3.63 (1.0)

4.00 (0.9)

4.58 (0.6)

0.002

 Overall satisfaction (ease of use)

3.96 (1.0)

3.63 (0.7)

4.08 (0.7)

4.25 (0.8)

0.028

Image quality

 Detail resolution

3.17 (1.0)

4.46 (0.5)

4.67 (0.5)

4.33 (0.8)

 < 0.001

 Contrast resolution

3.13 (1.0)

4.33 (0.6)

4.58 (0.5)

4.21 (0.8)

 < 0.001

 Penetration

3.00 (1.0)

4.46 (0.7)

4.42 (0.8)

4.13 (0.8)

 < 0.001

 Clutter

2.67 (1.0)

4.29 (0.6)

4.42 (0.5)

3.79 (0.8)

 < 0.001

 Overall satisfaction (image quality)

2.92 (1.2)

4.25 (0.7)

4.46 (0.5)

4.08 (1.0)

 < 0.001

  1. Ratings of 1–5 based on a Likert scale of agreement (5) or disagreement (1)
  2. p-values from Kruskal–Wallis rank sum test; < 0.05 indicates at least one device is statistically different from another device