Introduction
Materials and methods
Patients and methods
Lymph node areas | Patient 1 | Patient 2 | Patient 3 | Patient 4 | Patient 5 | Patient 6 | Patient 7 | Patient 8 | Patient 9 | Patient 10 | Patient 11 | Patient 12 | Patient 13 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cervical lymph node areas | 2R |
X
|
X
|
Xo
| ||||||||||
3R |
X
|
Xo
|
Xo
|
X
|
X
|
X
| ||||||||
4R |
X
|
Xo
|
Xo
|
Xo
|
X
|
Xo
|
Xo
|
X
|
Xo
|
X
| ||||
5R |
X
|
X
|
Xo
|
X
| ||||||||||
2 L |
Xo
|
X
| ||||||||||||
3 L |
Xo
|
X
|
X
|
X
|
Xo
| |||||||||
4 L |
Xo
|
Xo
|
Xo
|
Xo
|
Xo
|
X
|
X
|
Xo
|
Xo
|
Xo
|
Xo
| |||
5 L |
X
|
Xo
|
X
|
X
| ||||||||||
Mediastinal lymph node areas | 1R |
Xo
|
Xo
|
Xo
|
Xo
|
X
|
X
|
X
|
X
|
X
| ||||
2R |
Xo
|
Xo
|
Xo
|
Xo
|
Xo
|
X
|
X
|
X
|
X
|
X
|
X
| |||
1 L |
Xo
|
X
|
Xo
|
X
|
X
|
X
|
X
|
X
| ||||||
2 L |
Xo
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
| |||||
3A |
Xo
|
Xo
|
X
|
Xo
|
X
|
X
|
X
|
X
|
X
|
X
| ||||
3P |
X
|
X
|
X
| |||||||||||
4R |
Xo
|
X
|
X
|
X
|
Xo
|
X
|
X
| |||||||
4 L |
X
|
X
|
X
|
X
| ||||||||||
5 |
X
|
Xo
|
Xo
|
X
|
X
|
Xo
|
Xo
|
X
|
Xo
|
X
|
Xo
| |||
6 |
X
|
Xo
|
Xo
|
X
|
Xo
|
Xo
|
Xo
|
X
|
Xo
|
X
|
Xo
| |||
7 |
X
|
X
| ||||||||||||
8 | ||||||||||||||
10R |
X
|
X
|
X
|
X
| ||||||||||
10 L | ||||||||||||||
Para cardiac R |
X
| |||||||||||||
Axillary lymph node area | R |
X
| ||||||||||||
L |
X
|
X
|
Xo
| |||||||||||
Internal mammary chains | R |
X
|
Xo
| |||||||||||
L |
X
|
Simulation
Volume definition
Treatment planning and dosimetric parameters
Follow-up
Statistical analysis
Results
Dose distribution
Target dosimetry (Table 2)
Patient | V95% | D98% | D50% | D2% | CI | HI | CO | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
3D-CRT | IMRT HT | 3D-CRT | IMRT HT | 3D-CRT | IMRT HT | 3D-CRT | IMRT HT | 3D-CRT | IMRT HT | 3D-CRT | IMRT HT | 3D-CRT | IMRT HT | |
1
| 95.6 | 96.2 | 91.3 | 93.05 | 102 | 99.9 | 106.6 | 104.1 | 2.3 | 1.2 | 1.1 | 1.1 | 0.6 | 0.8 |
2
| 96.8 | 94,9 | 92.9 | 90.7 | 100.7 | 99.9 | 104.7 | 102.8 | 2.4 | 1.1 | 1.1 | 1.1 | 0.7 | 0.8 |
3
| 92.3 | 98.1 | 82.5 | 95.2 | 100 | 100 | 104.4 | 103.05 | 2.3 | 1.3 | 1.1 | 1.1 | 0.5 | 0.7 |
4
| 94.3 | 99.4 | 92.3 | 97.8 | 99.4 | 100.1 | 107.3 | 102.1 | 2.8 | 1.3 | 1.1 | 1.1 | 0.8 | 0.9 |
5
| 91.9 | 97.5 | 90.4 | 94.4 | 99.1 | 99.8 | 105 | 102.3 | 2.3 | 1.3 | 1.1 | 1.1 | 0.6 | 0.7 |
6
| 76.8 | 94.6 | 86.3 | 90.6 | 97.7 | 101.2 | 104.7 | 105.8 | 2.6 | 1.3 | 1.1 | 1.1 | 0.4 | 0.7 |
7
| 94.5 | 95.3 | 88.1 | 92.3 | 103.05 | 100 | 106 | 101.6 | 2.8 | 1.1 | 1.2 | 1.1 | 0.6 | 0.8 |
8
| 92.2 | 94.9 | 87.5 | 91.1 | 101.6 | 100 | 108.6 | 102.9 | 2.4 | 1.1 | 1.1 | 1.1 | 0.5 | 0.7 |
9
| 96.1 | 94.3 | 93.3 | 90.5 | 99.6 | 99.7 | 103.7 | 102.9 | 2.4 | 1.1 | 1.1 | 1.1 | 0.6 | 0.8 |
10
| 94.1 | 96.8 | 90.8 | 93 | 99.8 | 99.7 | 104.5 | 102.5 | 2.3 | 1.3 | 1.1 | 1.1 | 0.7 | 0.7 |
11
| 97.8 | 94.1 | 94.6 | 90 | 101.7 | 99.8 | 104.9 | 103 | 3.1 | 1.1 | 1.1 | 1.1 | 0.5 | 0.7 |
12
| 97.2 | 95.1 | 93.7 | 91.6 | 102 | 100 | 106.6 | 103.4 | 3.0 | 1.1 | 1.1 | 1.1 | 0.8 | 0.8 |
13
| 97.7 | 94.5 | 94.5 | 90.5 | 101.4 | 99.8 | 105.4 | 102.9 | 3.0 | 1.2 | 1.1 | 1.1 | 0.8 | 0.8 |
mean
| 93.7 | 95.8 | 90.6 | 92.4 | 100.6 | 100 | 105.6 | 103 | 2.6 | 1.2 | 1.1 | 1.1 | 0.6 | 0.8 |
median
| 94.5 | 95.1 | 91.3 | 91.6 | 100.7 | 99.9 | 105 | 102.9 | 2.4 | 1.2 | 1.1 | 1.1 | 0.6 | 0.8 |
(p)
| NS | NS | NS | 0.002 | 0.001 | NS | 0.001 |
Breasts (Table 3, Figures 1A, 2)
Factors / Dose (Gy) | 3D-CRT | IMRT | ( p) | |||
---|---|---|---|---|---|---|
Median | Mean | Median | Mean | |||
Breasts
|
Dmax
| 38.6 | 38.3 | 35.3 | 33.6 | 0.001 |
Dmin
| 0.001 | 0.02 | 0.3 | 0.8 | 0.001 | |
Dmean
| 2.7 | 4.9 | 4.7 | 5.7 | 0.05 | |
V5 Gy
| 9.9 | 17.2 | 27 | 32.7 | 0.001 | |
V20 Gy
| 5.7 | 11.6 | 3.9 | 9.1 | 0.002 | |
V25 Gy
| 5.05 | 10.4 | 1.2 | 4.6 | 0.001 | |
V30 Gy
| 4.05 | 8.9 | 0.2 | 2.6 | 0.001 | |
Right breast
|
Dmax
| 37.7 | 34.6 | 32.7 | 30.3 | 0.01 |
Dmin
| 0.001 | 0.02 | 0.3 | 0.8 | 0.001 | |
Dmean
| 2.1 | 3.8 | 4.4 | 5.2 | 0.007 | |
V5 Gy
| 7.8 | 13.1 | 25.5 | 29.7 | 0.001 | |
V20 Gy
| 4.3 | 8.5 | 2.6 | 7.8 | NS | |
V25 Gy
| 3.5 | 7.5 | 1.04 | 4.3 | 0.004 | |
V30 Gy
| 2.7 | 6.4 | 0.2 | 2.3 | 0.002 | |
Left breast
|
Dmax
| 38.3 | 35.5 | 34 | 31.8 | 0.02 |
Dmin
| 0.001 | 0.08 | 0.3 | 1.5 | 0.001 | |
Dmean
| 3.2 | 6 | 4.6 | 6.2 | NS | |
V5 Gy
| 11.1 | 21.3 | 31.8 | 35.8 | 0.007 | |
V20 Gy
| 6.4 | 14.4 | 3.6 | 10.1 | 0.002 | |
V25 Gy
| 5.5 | 13 | 1.5 | 4.9 | 0.002 | |
V30 Gy
| 4.4 | 11.1 | 0.4 | 2.8 | 0.002 | |
Lung-PTV
|
Dmax
| 38.6 | 38.4 | 36.8 | 36.9 | 0.003 |
Dmin
| 0.1 | 0.2 | 0.3 | 0.7 | 0.002 | |
Dmean
| 12 | 12.4 | 9.2 | 9.7 | 0.003 | |
V5 Gy
| 47.1 | 46.3 | 56.4 | 57.7 | 0.001 | |
V20 Gy
| 28.2 | 30.3 | 12.2 | 15.5 | 0.001 | |
V30 Gy
| 19.4 | 22.1 | 4.9 | 5.3 | 0.001 | |
Heart
|
Dmax
| 37.3 | 37.1 | 38.1 | 38 | 0.01 |
Dmin
| 0.3 | 0.6 | 0.7 | 1.3 | 0.001 | |
Dmean
| 13 | 13.9 | 11.2 | 11.5 | 0.01 | |
V20 Gy
| 32.3 | 35.7 | 20.7 | 25 | 0.002 | |
V30 Gy
| 23.1 | 29 | 11.1 | 14.4 | 0.001 | |
Oesophagus
|
Dmax
| 37.3 | 37.3 | 36.9 | 36.9 | NS |
Dmin
| 0.4 | 3.0 | 0.8 | 1.7 | 0.02 | |
Dmean
| 23.3 | 24.6 | 20.8 | 21.5 | 0.002 | |
V35 Gy
| 48.4 | 41 | 26.7 | 28.5 | 0.02 | |
Thyroid
|
Dmax
| 37.2 | 37.2 | 36.9 | 37.1 | NS |
Dmin
| 3.4 | 13.9 | 12.6 | 15.1 | NS | |
Dmean
| 34.6 | 30.1 | 31.6 | 29.4 | NS | |
V30 Gy
| 87.7 | 75.1 | 72.7 | 64.1 | 0.003 | |
Integral dose
|
Mean (Gy.L)
| - | 179.0 | - | 176.8 | NS |