Research Article
A Methodological Evaluation of Volumetric Measurement Techniques including Three-Dimensional Imaging in Breast Surgery
Table 2
VIZ3D in situ versus VIZ3D sampling (“naive” operator).
(a) |
| Name | Side | VIZ3D_INSITU | VIZ3D_SAMP | dVIZisVISp |
| S1 | G | 205 | 190 | 15 | S1 | D | 200 | 180 | 20 | S2 | L | 485 | 490 | −5 | S2 | R | 380 | 385 | −5 | S3 | L | 280 | 315 | −35 | S3 | R | 320 | 390 | −70 | S4 | L | 70 | 130 | −60 | S4 | R | 180 | 220 | −40 | S5 | L | 330 | 385 | −55 | S5 | R | 285 | 325 | −40 | S6 | L | 105 | 140 | −35 | S6 | R | 135 | 130 | 5 | S7 | L | 125 | 145 | −20 | S7 | R | 170 | 175 | −5 | S8 | L | 470 | 540 | −70 | S8 | R | 510 | 805 | −295 | S9 | L | 205 | 230 | −25 | S9 | R | 200 | 225 | −25 |
| | Mean ± SD | | | | | Median | | | −30 | | P25–P75 | | | −55–−5 | | SD (robust) | | | 37.0 |
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(b) |
| Method 1 | Method 2 | | ICC | Difference |
Paired Student’s -test | Wilcoxon | CV (%) | Bland-Altman | (ICC*) | value | value | ( value) |
| VIZ3D in situ | VIZ3D sample | 18 | 0.878 (0.698) | | 0.021 | 0.0008 | 19.9 | Pearson: −0.66 (0.0031) | Spearman: −0.39 (0.10) |
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There was a significant difference of cm³ between two methods. The in situ method underestimates the volume compared to the resection-based method.
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