Research Article
Similar-Case-Based Optimization of Beam Arrangements in Stereotactic Body Radiotherapy for Assisting Treatment Planners
Table 1
Geometrical features for selection of similar cases.
| PTV location | PTV centroid in LR direction | PTV centroid in AP direction | PTV centroid in SI direction |
| PTV shape | Effective diameter of PTV | Sphericity of PTV |
| Lung dimension | Lung length in LR direction | Lung length in AP direction | Lung length in SI direction |
|
Spinal cord position | Distance between PTV and spinal cord in isocenter plane | Angle from spinal cord to PTV in isocenter plane |
|
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PTV: planning target volume; LR: left-right; AP: anterior-posterior; SI: superior-inferior.
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