PO-0804: Relative dosimetry evaluation for small multileaf collimator fields on a TrueBeam linear accelerator

Radiochromic Film Dosimetry of Small Irregular Fields Shaped by a Micro-multileaf Collimator for Stereotactic Radiosurgery

Peripheral dose distributions for a linear accelerator equipped with a secondary multileaf collimator and universal wedge

The American Association of Physicists in Medicine Task Group 36 (AAPM TG-36) data can be used to estimate peripheral dose (PD) distributions outside the primary radiation field. However, the report data does not apply to linear accelerators equipped with a multileaf collimator (MLC) and universal wedge (UW). Tertiary multileaf collimators have been shown to significantly affect PD distribution...

Impact of the high-definition multileaf collimator on linear accelerator-based intracranial stereotactic radiosurgery.

OBJECTIVES The impact of two multileaf collimator (MLC) systems for linear accelerator-based intracranial stereotactic radiosurgery (SRS) was assessed. METHODS 68 lesions formed the basis of this study. 2.5 mm leaf width plans served as reference. Comparative plans, with identical planning parameters, were based on a 5 mm leaf width MLC system. Two collimation strategies, with collimation fix...

Monte Carlo modeling of HD120 multileaf collimator on Varian TrueBeam linear accelerator for verification of 6X and 6X FFF VMAT SABR treatment plans

A Monte Carlo (MC) validation of the vendor-supplied Varian TrueBeam 6 MV flattened (6X) phase-space file and the first implementation of the Siebers-Keall MC MLC model as applied to the HD120 MLC (for 6X flat and 6X flattening filter-free (6X FFF) beams) are described. The MC model is validated in the context of VMAT patient-specific quality assurance. The Monte Carlo commissioning process inv...

Physics Contribution Megavoltage Image-based Dynamic Multileaf Collimator Tracking Ofa Niti Stent in Porcine Lungs on a Linear Accelerator

*Department of Oncology, Aarhus University Hospital, Aarhus, Denmark; yDepartment of Medical Physics, Aalborg Hospital, University of Aarhus, Aalborg, Denmark; zDepartment of Pulmonary Medicine, Aalborg Hospital, University of Aarhus, Aalborg, Denmark; xDepartment of Thoracic Surgery, Aalborg Hospital, University of Aarhus, Aalborg, Denmark; kDepartment of Radiation Oncology, Asan Medical Cente...