FFF-VMAT for SBRT of lung lesions: Improves dose coverage at tumor-lung interface compared to flattened beams.

CONCLUSION: While prescribing dose to the tumor periphery, 6X-FFF VMAT plans for stereotactic single-dose lung SBRT provided similar target coverage with better dose conformity, superior intermediate dose-spillage (improved dose coverage at tumor interface), and improved OAR sparing compared to traditional 6X-FF beams and significantly reduced treatment time. The ipsilateral lung density and tumor location considerably affected dose distributions requiring special attention for clinical SBRT plan optimization on a per-patient basis. Clinical follow up of these patients for tumor local-control rate and treatment-related toxicities is in progress. PMID: 31859456 [PubMed - as supplied by publisher]
Source: Journal of Applied Clinical Medical Physics - Category: Physics Authors: Tags: J Appl Clin Med Phys Source Type: research