Comparison of air kerma measurements for diagnostic X-ray beam qualitiesis

Project Description

The objective of this comparison is to support the IAEA-RAD-1006 and IAEA-RAD-1007 CMC lines for calibration of diagnostic dosimeters used in mammography. Further diagnostic beam qualities, based on the IEC 61267 Standard, will also be involved to support new CMC claims of IAEA for calibration of dosimeters used for radiography, fluoroscopy, CT etc. The air kerma standards of IAEA are traceable to PTB. The outcomes of this comparison, i.e. the calibration coefficients of transfer chambers, should agree within their stated uncertainties, where correlation effects due to the traceability of the IAEA standards to PTB will be taken into account. If this is the case, it can validate the calibration practice of the IAEA, supporting the relevant CMC claims of the IAEA. The selected beam qualities are the series RQR, ROA, RQT, RQR-M, RQA-M according to the IEC 61267 Standard and the MRV mammography qualities established at the PTB (Mo anode with Rh filtration). The transfer chambers are: Exradin A3, A4, Magna A650 and Radcal 10X5 6M.

Final Report  2014-10-01

The comparison has been completed and results are published in the KCDB.