Feasibility study of a multi-lesion cyberknife radiotherapy plan verification method using a 2D array with pre-set roll angles.

ABSTRACT:

Background

When validating intracranial multi-lesion CyberKnife M6/S7 plans with SRSmapcheck, setting the array to a fixed 0° measures only one target dose distribution, leaving the other lesions unmeasured. Moreover, the CyberKnife treatment planning system does not support roll verification tools, and testing confirms that X-sight fiducial marker guidance is incompatible with free array roll. A novel method and workflow are required to validate multi-lesion plans with random positions.

Methods

A geometric model was established based on the relationship between SRSmapcheck and the tumor location. For two tumors spaced 77 mm apart (each 20 mm in diameter, or one 40 mm apart and the other infinitesimally small), the corresponding array roll angle interval was approximately 15

SUBMITTER: Li T 

PROVIDER: S-EPMC12559907 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature