Validation of the dosimetric system for patient-specific quality assurance of IMRT at CEDT-CIMEQ

Given the lack of an internationally accepted code of practice for patient-specific quality control (PS-QA) of intensity-modulated radiation therapy (IMRT) treatments and the need to introduce this advanced modality into the clinical practice of the Radiation Therapy Service at the cedt-CIMEQ, the methodology recommended by the American Association of Physicists in Medicine Working Group 119 (AAPM TG-119) was assimilated and implemented. The procedures used for its habilitation and the results obtained are shown. It can be seen that the results obtained with the cedt-CIMEQ system for PS-QA, applied to all TG-119 test cases, fall within the confidence limits emanating from 10 reference centers. It could be concluded that, from the point of view of the reliability of the linear accelerator, the accuracy of the planning system and the precision of the PS-QA system, the cedt-CIMEQ is suitable for the introduction of IMRT in the clinic. (author)