Feasibility of treatment planning with HyperArc stereotactic radiosurgery methods for ocular tumors.

HyperArc plans demonstrated high conformality Paddick conformity index (PCI = 0.84 ± 0.04) with steep dose gradient index (GI = 3.29 ± 0.38).

Adequate planning target volumes coverage (D99% = 23.80 ± 0.46 Gy) was achieved with a mean gross tumor volume dose of 27.54 ± 0.47 Gy.

Average beam-on time was under 9 min.

End-to-end quality assurance results showed a 99.00 ± 0.59% pass rate (2%/2 mm γ-criteria), with a Monte Carlo check showing 97.81 ± 1.24% agreement with the AcurosXB algorithm (2%/2 mm).