A Novel End-to-End Test System in Assessing the Beam-by-Beam Delivery Accuracy for the CyberKnife System
نویسندگان
چکیده
The geometric and dosimetric dose delivery accuracy is essential for a stereotactic radiosurgery system, and is required to be verified and maintained with quality assurance (QA) procedures performed on regular bases. Typical procedures test the delivery performance of the targeting system and beam shaping collimators. The current overall clinical delivery accuracy tests recommended by the vendor and routinely performed at each site for Cyberknife system are the End-to-End (E2E) tests which employ film measurement on a hidden target and AQA tests for daily performance consistency QA. The current film based End-to-End test verifies overall targeting accuracy on an isocentric delivery only. It neither provides beam-by-beam delivery accuracy nor the beam shaping accuracy. This report examines the use of the XRV-100 (Logos Systems, Scotts Valley, CA), a novel 3-D scintillator geometry and imaging system, to analyze the individual beams, and calculate the overall accuracy, of non-isocentric plans.
منابع مشابه
SU-E-T-453: A Novel Daily QA System for Robotic Image Guided Radiosurgery with Variable Aperture Collimator.
PURPOSE A novel end-to-end system using a CCD camera and a scintillator based phantom that is capable of measuring the beam-by-beam delivery accuracy of Robotic Radiosurgery has been developed and reported in our previous work. This work investigates its application to end-to-end type daily QA for Robotic Radiosurgery (Cyberknife) with Variable Aperture Collimator (Iris). METHODS The phantom ...
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