Purpose: Our objective was to investigate delivery quality assurance (DQA) tools for robotic radiosurgery using the CyberKnife™ (Accuray, USA). We evaluated different phantoms and methods to measure agreement with the planed dose. We also studied procedure time. Methods: For absolute dose verification we used a 0.125cc micro ion chamber (TM31010, PTW, Germany) with 1) the ellipsoid shaped UMT Phantom (Iba Dosimetry, Germany) and 2) a cubic shaped custom‐made phantom from water‐equivalent RW3 with multiple den…
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