- Title
- An evaluation of cine-mode 3D portal image dosimetry for volumetric modulated arc therapy
- Creator
- Ansbacher, W; Swift, C-L; Greer, P. B.
- Relation
- 6th International Conference on 3D Radiation Dosimetry (IC3DDose). Journal of Physics: Conference Series (South Carolina 22-26 August, 2010)
- Publisher Link
- http://dx.doi.org/10.1371/journal.pgen.1001184
- Publisher
- Institute of Physics Publishing
- Resource Type
- conference paper
- Date
- 2010
- Description
- We investigated cine-mode portal imaging on a Varian Trilogy accelerator and found that the linearity and other dosimetric properties are sufficient for 3D dose reconstruction as used in patient-specific quality assurance for VMAT (RapidArc) treatments. We also evaluated the gantry angle label in the portal image file header as a surrogate for the true imaged angle. The precision is only just adequate for the 3D evaluation method chosen, as discrepancies of 2° were observed.
- Subject
- radiation treatments; dosimeters; cine-mode; Electronic Portal Image dosimeter (EPID); Volumetric Modulated Arc Therapy (VMAT)
- Identifier
- http://hdl.handle.net/1959.13/935727
- Identifier
- uon:12124
- Identifier
- ISBN:1742-6588
- Language
- eng
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