Table 3 A comparison of target dose homogeneity (HI, DHD), dose conformity (CN), D1cc for spinal cord, V20Gy and V5Gy values for lungs, and mean dose to lung and oesophagus obtained by dynamic conformal arc therapy plans with different values of collimator angle
From: Treating lung cancer with dynamic conformal arc therapy: a dosimetric study
Dynamic conformal arc therapy (DCAT) | |||||
|---|---|---|---|---|---|
Parameter | 3D CRT | 0° | 30° | 45° | 90° |
HI | 0.144±0.018 | 0.132±0.027 | 0.133±0.027 | 0.133±0.027 | 0.134±0.028 |
DHD | 0.028±0.005 | 0.032±0.007 | 0.032±0.007 | 0.032±0.007 | 0.032±0.007 |
CN | 0.594±0.109 | 0.688±0.071 | 0.692±0.069 | 0.692±0.068 | 0.674±0.083 |
Spinal cord: D1cc (cGy) | 2888±985 | 2916±723 | 2903±717 | 2896±711 | 2971±733 |
Lung: V20Gy (%) | 23.9±9.4 | 22.9±12.1 | 23.1±12.2 | 23.3±12.3 | 23.7±12.5 |
Lung: V5Gy(%) | 53.6±17.8 | 63.3±18.9 | 63.5±18.9 | 63.5±18.9 | 63.1±18.8 |
Lung: MLD (cGy) | 1173±422 | 1270±466 | 1278±470 | 1284±473 | 1289±480 |
Oesophagus: D mean (cGy) | 1695±756 | 1750±756 | 1751±749 | 1752±748 | 1740±744 |