The measurement method and algorithms introduced in this study use cine-images, are highly accurate, simple, fast, and reproducible. It tests all gantry angles and provides a suitable automatic analysis and correction tool to improve EPID dosimetry and perform comprehensive linac QA for arc treatments.
An algorithm to reconstruct delivered patient 3D doses from EPID exit dosimetry measurements was presented. The method was applied to phantom and patient data sets, as well as for dynamic IMRT and VMAT delivery techniques. Results indicate that the EPID dose reconstruction algorithm presented in this work is suitable for clinical implementation.
The high-resolution, deflection-type mass spectrometer, Manitoba II, has been used to determine directly the mass difference 136 Xe− 136 Ba to be 2639.6 (0.6) µu, giving Q ββ = 2458.7 (0.6) keV.
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