Publications by authors named "Xesus Gonzalez"
Purpose: To show the workflow for the commissioning of a MRlinac, and some proposed tests; off-axis targets, output factors for small fields, dose in inhomogeneities, and multileaf collimator quality assurance (MLC QA).
Methods: The tests were performed based on TG-142, TG-119, ICRU 97, TRS-398, and TRS-483 recommendations as well as national regulations for radiation protection and safety.
Results: The imaging tests are in agreement with the protocols.
Purpose: To describe and report longitudinal quality assurance (QA) measurements for the mechanical and dosimetric performance of an Elekta Unity MR-linac during the first year of clinical use in our institution.
Materials And Methods: The mechanical and dosimetric performance of the MR-linac was evaluated with daily, weekly, monthly, and annual QA testing. The measurements monitor the size of the radiation isocenter, the MR-to-MV isocenter concordance, MLC and jaw position, the accuracy and reproducibility of step-and-shoot delivery, radiation output and beam profile constancy, and patient-specific QA for the first 50 treatments in our institution.