An end-to-end quality assurance procedure for pelvic VMAT using optically stimulated luminescence dosimeters and an anthropomorphic phantom.

End-to-end technical validation of multi-isocenter total body irradiation using an anthropomorphic phantom.

Dosimetric Validation of Ethos Online Adaptive Radiotherapy for Prostate Cancer: An End-to-End Phantom Study

Background/Objectives: Online adaptive radiotherapy (oART) re-optimizes treatment on the anatomy of the day, but automatically generated plans require dosimetric verification and dose–volume assessment. We performed an end-to-end validation of the Varian Ethos workflow for prostate cancer, including cross-adaptation be...

Evaluation of the environ SRS immobilization mask system for HyperArc: Dosimetric attenuation, dose calculation accuracy, and clinical setup reproducibility

Abstract Background Frameless thermoplastic masks are standard for intracranial stereotactic radiosurgery (SRS), with the Encompass (CQ Medical) widely used on the Varian HyperArc platform. A candidate mask must minimize beam attenuation, permit accurate dose calculation, and enable reproducible setup, yet these are ra...

Evaluation of the dosimetric leaf gap for VMAT-SBRT in small target volumes

Volumetric modulated arc therapy stereotactic body radiation therapy (VMAT-SBRT) is a highly efficient technique to treat inoperable patients. To implement the VMAT-SBRT technique in clinical applications, the commissioning process needs to be performed effectively. One of the most important steps in the commissioning...

How robust are secondary dose algorithms for Patient-Specific quality assurance in modulated stereotactic Radiosurgery?

PURPOSE Accurate dose verification is essential in stereotactic radiosurgery (SRS), where small fields and steep dose gradients may amplify uncertainties, especially with complex techniques like multitarget single-isocenter VMAT. This technical note evaluated the robustness of two secondary dose calculation algorithms...

Assessing Gamma Index Sensitivity to Selected Linear Accelerator Mechanical Errors Using Various Dosimetric Systems

Background: Volumetric modulated arc therapy (VMAT) for stereotactic body radiotherapy (SBRT) involves highly modulated dose distributions and steep dose gradients, increasing the importance of patient-specific quality assurance (QA). Gamma index analysis is widely used for comparing measured and treatment planning sys...