Table 4.
Sum of doses at point ‘A’ and associated bladder doses from two different dwell time patterns
| Dose/# (Gy) | Tumour (point A) dose (Gy) | n | Minimum Bladder dose, Gy (%) | Maximum Bladder dose, Gy (%) | Mean Bladder dose, Gy (%) | |||
|---|---|---|---|---|---|---|---|---|
| Existing pattern | Proposed pattern | Existing pattern | Proposed pattern | Existing pattern | Proposed pattern | |||
| 7 | 21 (3#s) | 34 | 5.57 (26.52) | 4.79 (22.81) | 23.88 (113.71) | 25.16 (119.81) | 13.54 ± 4.11 (64.48) | 13.56 ± 4.63 (64.57) |
| 6 | 18 (3#s) | 3 | 7.66 (42.56) | 6.58 (36.56) | 8.84 (49.11) | 8.14 (45.22) | 7.70 ± 1.12 (42.78) | 7.18 ± 0.84 (39.89) |
| 5, 5, 7 | 17 (3#s) | 1 | 5.92 (34.82) | 5.52 (32.47) | Not applicable | Not applicable | Not applicable | Not applicable |
| 5 | 15 (3#s) | 5 | 7.55 (50.33) | 7.76 (51.73) | 20.94 (139.60) | 20.94 (139.60) | 13.39 ± 5.33 (89.25) | 12.90 ± 5.25 (86.00) |
| 7 | 14 (2#s) | 30 | 4.73 (33.79) | 4.61 (32.93) | 23.39 (167.07) | 23.06 (164.71) | 10.87 ± 5.32 (77.64) | 10.74 ± 5.29 (76.71) |
| 6.5 | 13 (2#s) | 1 | 4.18 (32.15) | 4.18 (32.15) | Not applicable | Not applicable | Not applicable | Not applicable |
| 6 | ||||||||
| 12 (2#s) | 9 | 3.06 (25.5) | 2.97 (24.75) | 16.64 (138.67) | 15.98 (133.17) | 9.06 ± 5.34 (75.49) | 8.85 ± 4.98 (73.75) | |
| 5 | ||||||||
| 10 (2#s) | 30 | 4.09 (40.9) | 5.19 (51.90) | 19.28 (192.8) | 19.64 (196.40) | 9.58 ± 4.33 (95.81) | 10.13 ± 4.29 (101.30) | |
n – number of patients