Research Article

Similar-Case-Based Optimization of Beam Arrangements in Stereotactic Body Radiotherapy for Assisting Treatment Planners

Table 4

Mean standard deviation of the planning evaluation indices in 10 test cases obtained from the dose distributions produced by the original and most usable beam arrangements.

Original beam arrangementMost usable beam arrangementP value

PTV
 D95 (Gy) 0.029
 Homogeneity index 0.643
 Conformity index 0.376
 TCP (%) 0.084
Lung
 V5 (%) 0.066
 V10 (%) 0.161
 V20 (%) 0.582
 Mean dose (Gy) 0.152
 NTCPlung (%) 0.182
Spinal cord
 Maximum dose (Gy) 0.465
 NTCPspinal cord (%) 0.187