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