STEREOTACTIC RADIOSURGERY DELIVERY VERIFICATION USING TETRAZOLIUM SALT-BASED GEL AS A DOSIMETER

The recently made available ClearView® tetrazolium salt-based gel dosimeter, encapsulated in a vial, was tested to determine feasibility in use as an end-to-end dosimeter for stereotactic radiosurgery commissioning and quality assurance. A fabricated adaptor enabled direct attachment of the gel vial lid to a rod extension. The rod was inserted into a water-filled head phantom at the open neck location and locked into position. Once quality assurance testing of the linear accelerator was completed, a stereotactic plan was deployed. Optical scanning software enabled a direct comparison of the measured positional isocenter and dose distribution to the intended plan. Delivery accuracy was verified as line-dose profile plots of measured data coincide with the planned dose location and distribution. It has been demonstrated here that ClearView® gel contained in a vial is a suitable dosimeter for verifying stereotactic radiation therapy delivery accuracy. The end-to-end testing provided is geared to work identically for any small field study, including stereotactic radiosurgery and radiotherapy, volumetric modulated arc therapy, intensity modulated radiation therapy, and three-dimensional conformal radiation therapy.The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author