Table 2.
Measurement of the diameter of six cylindrical inserts in an ultrasound image of a calibration phantom Gammex 403GS LE. All diameters were measured both horizontally (H) and vertically (V)
| Phantom, mm | QLAB, mm | Tomtec, mm | VR, mm | ||||
|---|---|---|---|---|---|---|---|
| Size | H/V | Mean | SD | Mean | SD | Mean | SD |
| 4.0 | V | 3.4 | 0.508 | 2.8 | 0.837 | 4.4 | 0.449 |
| 4.0 | H | 2.9 | 0.397 | 3.2 | 0.447 | 3.8 | 0.778 |
| 6.0 | V | 5.3 | 0.219 | 4.2 | 0.837 | 5.9 | 0.770 |
| 6.0 | H | 4.9 | 0.241 | 5.0 | 0.000 | 6.3 | 1.113 |
| 10.0 | V | 10.3 | 0.652 | 9.0 | 0.707 | 10.4 | 0.920 |
| 10.0 | H | 9.6 | 0.205 | 10.4 | 0.548 | 11.7 | 1.882 |
Mean result closest to the reference and the smallest standard deviations are shown in bold.