Fig. 2From: Circular collimator arc versus dynamic conformal arc treatment planning for linac-based stereotactic radiosurgery of an intracranial small single lesion: a perspective of lesion asymmetryConformity index (CI) as a function of (a) planning target volume (PTV) size and (b) PTV asymmetry (Asym) for 95 lesions. Dotted lines in (a) and (b) represent median values of PTV size (0.415 cm3) and PTV Asym (6.12%), respectivelyBack to article page