Table 2.
Dose volume constraints for anatomic planning and functional planning used for intensity-modulated radiotherapy (IMRT)
| |
|
Anatomic planning |
Functional planning |
||||
|---|---|---|---|---|---|---|---|
| Structure | Constraint type | Dose | Volume (%) | Priority | Dose | Volume (%) | Priority |
| GTV |
Maximum dose |
105% |
0% |
50 |
105% |
0% |
50 |
| Minimum dose |
103% |
100% |
450 |
103% |
100% |
450 |
|
| CTV |
Maximum dose |
105% |
0% |
400 |
105% |
0% |
400 |
| Minimum dose |
102% |
100% |
400 |
102% |
100% |
400 |
|
| PTV |
Maximum dose |
105% |
0% |
650 |
105% |
0% |
650 |
| Minimum dose |
101% |
100% |
350 |
101% |
100% |
350 |
|
| Total lung |
Maximum dose |
5 Gy |
30% |
200 |
5 Gy |
30% |
200 |
| Maximum dose |
10 Gy |
25% |
200 |
10 Gy |
25% |
200 |
|
| Maximum dose |
20 Gy |
20% |
200 |
20 Gy |
20% |
200 |
|
| Functional lung |
Maximum dose |
|
|
|
5 Gy |
30% |
250 |
| Maximum dose |
|
|
|
10 Gy |
25% |
250 |
|
| Maximum dose |
|
|
|
20 Gy |
20% |
250 |
|
| Spinal cord |
Maximum dose |
40 Gy |
0% |
300 |
40 Gy |
0% |
300 |
| Spinal cord + 5 mm | Maximum dose | 45 Gy | 0% | 300 | 45 Gy | 0% | 300 |