From: High-dose pre-operative helical tomotherapy (54 Gy) for retroperitoneal liposarcoma
Index | Expected value | Definition | |
---|---|---|---|
Target volume | |||
-Planning Target Volume (PTV) | V95 | >95% | Volume receiving at least 95% of prescribed dose |
D95 | >95% (51.3 Gy) | Dose received by 95% of the volume | |
D98 | >90% (48.6 Gy) | Dose received by 98% of the volume | |
D2 | <107% (57.8 Gy) | Dose received by 2% of the volume corresponding to the “hot spots” | |
D_mean | 54 Gy | Average dose (close as possible to the prescribed dose) | |
Organs at risk | |||
-Gastrointestinal[9] | D200cc | <50 Gy | Dose received by 200cc of the intestinal volume |
D2 | <54 Gy | Dose received by 2% of the volume corresponding to the “hot spots” | |
V45 | <33% | Volume receiving 45 Gy | |
V20 | <50% | Volume receiving 20 Gy | |
-Contralateral kidney | D2 | <12 Gy | Dose received by 2% of the volume corresponding to the “hot spots” |
-Spinal canal | D2 | <45 Gy | Dose received by 2% of the volume corresponding to the “hot spots” |