Table 3.
Statistics for the spleen segmentation results from training and test data. Incremental results are shown for the training set at step 1—after nonrigid registration, step 2—using GAC and adaptive convolution, and step 3—after incorporating shape and location correction. Columns present the DC, VO, VER, HER, RMSE, and ASD.
| Data set∕no. of cases | DC (%) | VO (%) | VER (%) | HER (%) | RMSE (mm) | ASD (mm) |
|---|---|---|---|---|---|---|
| Training spleen step 1∕14 | 87.5±4.8 | 78±7.5 | 13.6±10.5 | 9.7±9.2 | 2.9±1.2 | 1.6±0.7 |
| Training spleen step 2∕14 | 91±2 | 83.5±3.3 | 6.6±5.3 | 3.5±3.4 | 2.1±0.5 | 1±0.2 |
| Training spleen step 3∕14 | 90.6±2.1 | 83±3.5 | 5.5±4.9 | 3.5±5.1 | 2.1±0.6 | 1.3±0.8 |
| Test spleen (low resolution)∕14 | 94±1.7 | 88.8±2.9 | 4.3±3.6 | 3.1±2.9 | 2.1±0.8 | 1±0.5 |
| Normal∕7 | 93.3±1.2 | 87.5±2.1 | 3.9±3.1 | 2.7±3.8 | 1.7±0.3 | 0.8±0.1 |
| Splenomegaly∕7 | 94.7±1.8 | 90±3.3 | 4.7±4.2 | 3.5±2.1 | 2.5±1 | 1.2±0.5 |
| Test spleen (high resolution)∕10 | 95.2±1.4 | 91±2.6 | 3.3±2.7 | 1.7±0.7 | 1.1±0.3 | 0.7±0.1 |
| Interobserver spleen∕14 | 95.1±0.8 | 90.6±1.5 | 2.9±3 | 1.28±3.5 | 0.9±0.2 | 0.4±0.1 |