TABLE 1.
Tumor characteristics
|
4D pCTV (T00‐T50) Centroid shift (mm) |
4D pCTV Jaccard index |
4D pCTV Hausdorff distance (mm) |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Patient | Stage | Site | Posture | Prescribed dose (GyE)/fractions |
4D T50% CTV (cc) |
Frontal (LR/SI) |
Lateral (AP/SI) |
Frontal | Lateral | Frontal | Lateral |
| 1 | IA2 | RUL | Prone | 72.6/22 | 10.5 | 0.9/6.5 | 3.5/6.4 | 0.84 | 0.86 | 1.7 | 1.6 |
| 2 | IA2 | RLL | Prone | 72.6/22 | 18.9 | 0.2/1.7 | 1.0/1.8 | 0.91 | 0.91 | 1.5 | 1.8 |
| 3 | IVa | RLL | Supine | 66/10 | 11.2 | 0.4/25.6 | 2.8/25.2 | 0.91 | 0.92 | 1.6 | 1.5 |
| 4 | IA2 | RUL | Supine | 66/10 | 10.3 | 0.1/0.1 | 0.6/0.1 | 0.99 | 0.96 | 0.3 | 0.3 |
| 5 | IA | RUL | Supine | 66/10 | 14.9 | 1.6/1.5 | 2.6/1.2 | 0.87 | 0.87 | 1.4 | 2.4 |
| 6 | IA2 | LUL | Supine | 66/10 | 6.7 | 3.2/1.2 | 0.9/1.2 | 0.85 | 0.86 | 1.2 | 1.2 |
| 7 | IIA | RML | Supine | 80/20 | 41.3 | 0.1/0.4 | 0.4/0.1 | 0.98 | 0.97 | 1.0 | 1.0 |
| 8 | IA | RUL | Prone | 72.6/22 | 25.5 | 0.7/6.5 | 0.6/6.3 | 0.91 | 0.86 | 5.3 | 6.6 |
| 9 | IIB b | RLL | Supine | 66/10 | 69.4 | 1.5/11.5 | 3.0/10.4 | 0.67 | 0.72 | 12.3 | 10.4 |
| 10 | IA2 | RLL | Supine | 66/10 | 28.6 | 1.1/6.1 | 0.5/ 8.7 | 0.75 | 0.63 | 10.9 | 10.9 |
Note: (a) Lung metastasis of rectum cancer. (b) This CTV included two adjacent GTVs. Jaccard index and Hausdorff distance were evaluated after centroid matching.
Abbreviations: LUL, left upper lobe; pCTV, projected‐clinical‐target‐volume; RLL, right lower lobe; RML, right middle lobe; RUL, right upper lobe; GyE, Gray‐equivalent dose.