Table 1 Comparison between circular collimator arc (CCA) and dynamic conformal arc (DCA) treatment planning for 95 lesions. Planning target volume (PTV) coverage (COV) (%), prescribed isodose line (IDL) (%), conformity index (CI), and V12Gy (cm3) were compared between CCA and DCA
Parameters | COV (%) | IDL (%) | CI | V12Gy (cm3) | ||||
|---|---|---|---|---|---|---|---|---|
Planning technique | CCA | DCA | CCA | DCA | CCA | DCA | CCA | DCA |
Minimum | 98.3 | 98.5 | 73.6 | 73.7 | 1.17 | 1.15 | 0.31 | 0.32 |
Maximum | 99.5 | 99.5 | 83.1 | 81.2 | 2.42 | 1.56 | 3.42 | 3.44 |
Mean | 98.9 | 98.8 | 78.9 | 78.2 | 1.46 | 1.30 | 1.37 | 1.43 |
Median | 99.0 | 98.8 | 79.4 | 78.4 | 1.41 | 1.28 | 1.29 | 1.34 |
Standard deviation | 0.28 | 0.23 | 2.00 | 1.40 | 0.18 | 0.09 | 0.72 | 0.71 |
p-value | 0.0023 | 0.0144 | < 0.0001 | < 0.0001 | ||||