Table 3.
Comparison of motion degradation (3D-4D) and 4D absolute values for IMPTfull and IMPT20% for the ten patients for large (LS) and small (SS) spot sizes. The 3D-4D values represent the number of times the IMPTfull deliveries experience less motion degradation than IMPT20% for the eight starting breathing phases for each patient. The 4D values are the number of times the 4D-IMPTfull value is higher than the corresponding 4D-IMPT20% value for the eight starting breathing phases. The values shown are for 2.5Gy(RBE) fractions with the 12Gy(RBE) in parentheses. The “total” columns are the sum of the four different treatment scenarios for each patient. The “all” values are the summation of each treatment technique over the ten patients. A final value showing the 320 different deliveries is also included. The values in square brackets represent the possible maximum value for each variable.
| (3D-IMPTfull–4D-IMPTfull)–(3D-IMPT20%–4D-IMPT20%) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| EUD | V95 | D1-D99 | |||||||
| Patient | LS [/8] | SS [/8] | Total [/32] | LS [/8] | SS [/8] | Total [/32] | LS [/8] | SS [/8] | Total [/32] |
| 1 | 3 (6) | 8 (6) | 23 | 3 (5) | 6 (6) | 20 | 5 (5) | 4 (2) | 16 |
| 2 | 8 (8) | 7 (8) | 31 | 5 (3) | 3 (1) | 12 | 7 (2) | 0 (0) | 9 |
| 3 | 4 (4) | 7 (4) | 19 | 3 (3) | 5 (5) | 16 | 5 (4) | 3 (2) | 14 |
| 4 | 7 (6) | 8 (6) | 27 | 5 (3) | 8 (8) | 24 | 6 (6) | 0 (2) | 14 |
| 5 | 8 (8) | 4 (8) | 30 | 6 (6) | 7 (5) | 24 | 5 (3) | 0 (2) | 10 |
| 6 | 8 (8) | 7 (8) | 31 | 2 (3) | 8 (7) | 20 | 6 (8) | 0 (1) | 15 |
| 7 | 8 (4) | 7 (4) | 23 | 0 (0) | 5 (4) | 9 | 8 (7) | 5 (8) | 28 |
| 8 | 8 (7) | 8 (4) | 27 | 3 (4) | 8 (5) | 20 | 6 (2) | 3 (8) | 19 |
| 9 | 6 (5) | 7 (5) | 23 | 2 (2) | 8 (6) | 18 | 5 (8) | 0 (5) | 18 |
| 10 | 8 (7) | 8 (7) | 30 | 3 (3) | 8 (8) | 22 | 7 (3) | 3 (1) | 14 |
| All [/80] | 68 (63) | 71 (60) | 264 [/320] | 31 (32) | 64 (55) | 185 [/320] | 60 (48) | 18 (31) | 157 [/320] |
| 4D-IMPTfull–4D-IMPT20% | |||||||||
| |
EUD |
V95 |
D1-D99 |
||||||
| Patient | LS [/8] | SS [/8] | Total [/32] | LS [/8] | SS [/8] | Total [/32] | LS [/8] | SS [/8] | Total [/32] |
| 1 | 2 (5) | 5 (6) | 18 | 3 (5) | 6 (6) | 20 | 2 (2) | 2 (3) | 9 |
| 2 | 7 (6) | 8 (8) | 31 | 7 (6) | 8 (8) | 29 | 0 (5) | 0 (0) | 5 |
| 3 | 6 (6) | 4 (3) | 19 | 4 (4) | 8 (8) | 24 | 0 (1) | 3 (5) | 9 |
| 4 | 7 (4) | 7 (6) | 24 | 6 (4) | 8 (8) | 26 | 2 (1) | 3 (5) | 11 |
| 5 | 8 (8) | 8 (8) | 32 | 7 (8) | 8 (8) | 31 | 0 (1) | 0 (0) | 1 |
| 6 | 6 (3) | 8 (8) | 27 | 6 (4) | 8 (8) | 26 | 2 (1) | 1 (4) | 8 |
| 7 | 1 (0) | 8 (4) | 13 | 0 (1) | 7 (5) | 13 | 7 (4) | 3 (0) | 14 |
| 8 | 1 (2) | 8 (7) | 18 | 3 (4) | 8 (6) | 21 | 6 (7) | 4 (0) | 17 |
| 9 | 1 (1) | 8 (5) | 15 | 6 (3) | 8 (6) | 23 | 3 (2) | 6 (4) | 15 |
| 10 | 8 (5) | 6 (7) | 26 | 5 (5) | 8 (8) | 26 | 1 (5) | 3 (5) | 14 |
| All [/80] | 47 (40) | 70 (62) | 223 [/320] | 47 (44) | 77 (73) | 239 [/320] | 23 (29) | 25 (28) | 103 [/320] |