Table 3 Results of the dosimetric comparison between tomotherapy and intensity-modulated radiotherapy (IMRT)
From: High-dose pre-operative helical tomotherapy (54 Gy) for retroperitoneal liposarcoma
Volume | Indices | Tomotherapy | IMRT |
|---|---|---|---|
Planning Target Volume (PTV) | V95 (%) | 97 | 96.3 |
D95 (Gy) | 52.4 | 51.7 | |
D98(Gy) | 50.6 | 50.9 | |
D2 (Gy) | 55.2 | 54.6 | |
D_mean (Gy) | 53.8 | 53.4 | |
SD* | 1.06 | 0.92 | |
DSC† | 0.88 | 0.91 | |
HI†† | 0.086 | 0.068 | |
Gastrointestinal | D2 (Gy) | 50.8 | 51.8 |
V45 (%) | 7.3 | 10.3 | |
V20 (%) | 45.6 | 45.3 | |
D200cc (Gy) | 41.3 | 46.5 | |
Contralateral kidney | D2 (Gy) | 8.3 | 8.9 |
EUD§ (Gy) | 3.9 | 3.5 | |
Spinal canal | D2 | 32.5 | 39.1 |
Healthy tissue | Integral dose (Joules) | 354.1 | 294.7 |
Integral dose RVRII (Joules) | 321.5 | 259.6 |