Compatibility results of some diagnostic ionization chambers

The most important task of the National Laboratory for Metrology of the Ionizing Radiations at the Institute for Radiation Protection and Dosimetry - LNMRI/IRD-CNEN/MCT is to realize and maintain the legal units in compliance with the International System of Units - Si and disseminate them, above all within the framework of legal and scientific metrology. The LNMRI/IRD thus is on top of the metrological hierarchy in Brazil. Calibration certificates issued is the document that was result of the calibrations, that is, the instrument was calibrated and now it is traceable to national standards. Groups of a similar model of the ion chambers design specific for using at conventional diagnostic dosimetric, attenuated and no attenuated and dental applications, are placed under similar calibration condition at the LNMRI/IRD. The main objective is to observe how is the compatibilities' measurements obtained through 10 equipment set dedicated for clinical dosimetry, and how are the dispersion conclusion for these. (author)