title: Investigating the reproducibility of a complex multifocal radiosurgery treatment.
abstract: Stereotactic radiosurgery has become a widely used technique to treat solid tumors and secondary metastases of the brain. Multiple targets can be simultaneously treated with a single isocenter in order to reduce the set-up time to improve patient comfort and workflow. In this study, a 5-arc multifocal RapidArc treatment was delivered to multiple PRESAGE®dosimeters in order to explore the repeatability of the treatment. The three delivery measurements agreed well with each other, with less than 3% standard deviation of dose in the target. The deliveries also agreed well with the treatment plan, with gamma passing rates greater than 90% (5% dose-difference, and 2 mm distance-to-agreement criteria). The optical-CT PRESAGE®system provided a reproducible measurement for treatment verification, provided measurements were made immediately following treatment.
authors.affiliation: Duke University Medical Center, Durham, NC, USA.
authors.forename: M
authors.initials: M
authors.lastname: Niebanck
authors.affiliation: Duke University Medical Center, Durham, NC, USA.
authors.forename: T
authors.initials: T
authors.lastname: Juang
authors.affiliation: Duke University Medical Center, Durham, NC, USA.
authors.forename: J
authors.initials: J
authors.lastname: Newton
authors.affiliation: Rider University, Lawerenceville, NJ, USA.
authors.forename: J
authors.initials: J
authors.lastname: Adamovics
authors.affiliation: Duke University Medical Center, Durham, NC, USA.
authors.forename: Z
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Duke University Medical Center, Durham, NC, USA.
authors.forename: M
authors.initials: M
authors.lastname: Oldham