3D EPID-based in vivo dosimetry for IMRT and VMAT

7th International Conference on 3D Radiation Dosimetry

Mijnheer, B.^1 ; Olaciregui-Ruiz, I.^1 ; Rozendaal, R.^1 ; Sonke, J.-J.^1 ; Spreeuw, H.^1 ; Tielenburg, R.^1 ; Van Herk, M.^1 ; Vijlbrief, R.^1 ; Mans, A.^1

Department of Radiation Oncology, The Netherlands Cancer Institute, Antoni Van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX Amsterdam, Netherlands^1

关键词: Advanced treatment;    Dose verification;    In-vivo;    Patient specific;    Pre-Treatment;    Safety nets;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/444/1/012011/pdf
DOI  :  10.1088/1742-6596/444/1/012011

来源: IOP

【 摘 要 】

In this paper the various approaches of EPID-based in vivo IMRT and VMAT dose verification, and their clinical implementation, are described. It will be shown that EPID-based in vivo dosimetry plays an important role in the total chain of verification procedures in a radiotherapy department. EPID-based dosimetry, in combination with in-room imaging, is a fast and accurate tool for 3D in vivo verification of VMAT delivery. EPID-based in vivo dosimetry provides clinically more useful information and is less time consuming than patient-specific pre-treatment dose verification. In addition to accurate 3D dose verification, in vivo EPID-based dosimetry will also detect major errors in the dose received by individual patients, and provides a safety net for advanced treatments such as IMRT and VMAT.