Table 3 Comparison between plans using a fan-shaped block and those using a semi-circular block
|  | Block mode | Number of approved plan |  | Lung (mean ± SD) |  | Score | ||
|---|---|---|---|---|---|---|---|---|
V5 (%) | V10 (%) | V20 (%) | VS5 (mL) | |||||
Non-block |  | 15/15 | 48.0 ± 7.9 | 39.4 ± 6.9 | 16.0 ± 3.0 | 1747 ± 522 | 20 | |
fan-shaped block | Block 40 | C | 0/15 | NA | NA | NA | NA | 0 |
D | 15/15 | 38.7 ± 6.4 | 27.0 ± 4.8 | 12.9 ± 2.9 | 2049 ± 527 | 26 | ||
Block 50 | C | 0/15 | NA | NA | NA | NA | 0 | |
D | 15/15 | 36.5 ± 5.9 | 25.4 ± 4.4 | 12.6 ± 2.7 | 2124 ± 535 | 29 | ||
Block 60 | C | 0/15 | NA | NA | NA | NA | 0 | |
D | 15/15 | 34.4 ± 5.7 | 23.9 ± 4.3 | 13.0 ± 3.3 | 2197 ± 560 | 29 | ||
Block 70 | C | 0/15 | NA | NA | NA | NA | 0 | |
D | 11/15 | 33.5 ± 5.9 | 23.1 ± 4.4 | 12.3 ± 2.8 | 2223 ± 585 | 26 | ||
Block 80 | C | 0/15 | NA | NA | NA | NA | 0 | |
D | 3/15 | 36.5 ± 6.4 | 25.5 ± 4.9 | 14.1 ± 4.1 | 2052 ± 291 | 16 | ||
semi-circular block | Block 5 | C | 0/15 | NA | NA | NA | NA | 0 |
D | 1/15 | 29.7 | 20.3 | 12.4 | 2434 | 19 | ||
Block 6 | C | 0/15 | NA | NA | NA | NA | 0 | |
D | 6/15 | 29.1 ± 3.3 | 19.7 ± 3.2 | 12.0 ± 3.1 | 2396 ± 288 | 24 | ||
Block 7 | C | 6/15 | 22.0 ± 3.0 | 17.0 ± 2.3 | 11.4 ± 1.6 | 2391 ± 506 | 26 | |
D | 14/15 | 29.2 ± 3.9 | 20.6 ± 3.5 | 12.1 ± 2.7 | 2308 ± 525 | 32 | ||
Block 8 | C | 13/15 | 26.4 ± 4.4 | 20.6 ± 3.6 | 13.3 ± 2.9 | 2454 ± 586 | 31 | |
D | 15/15 | 31.3 ± 4.8 | 22.4 ± 3.9 | 13.2 ± 3.0 | 2299 ± 574 | 31 | ||