IAEA International Atomic Energy Agency RADIATION PROTECTION IN DIAGNOSTIC AND INTERVENTIONAL RADIOLOGY Part 15.4: Optimization of protection in radiography.

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Presentation transcript:

IAEA International Atomic Energy Agency RADIATION PROTECTION IN DIAGNOSTIC AND INTERVENTIONAL RADIOLOGY Part 15.4: Optimization of protection in radiography Practical exercise IAEA Training Material on Radiation Protection in Diagnostic and Interventional Radiology

IAEA 15.4: Optimization of protection in radiography2 Overview Subject matter : quality control of general radiography system Step by step procedure to be followed to implement the considered QC test mA and Exposure time linearity and reciprocity Timer accuracy Interpretation of results

IAEA International Atomic Energy Agency Part 15.4: Optimization of protection in radiography mA and Exposure time linearity and reciprocity IAEA Training Material on Radiation Protection in Diagnostic and Interventional Radiology

IAEA 15.4: Optimization of protection in radiography4 What Minimum Equipment is Needed? Electronic device (multi-function meter) to measure : exposure time mA

IAEA 15.4: Optimization of protection in radiography5 Timer Accuracy (I) Method : Set 70 kVp, 200 mA Measure time at all clinically used time settings Calculate error between set and actual time

IAEA 15.4: Optimization of protection in radiography6 Timer Accuracy (IV) Analysis : Actual time should be within  5% of set time, or  1 pulse (single phase, short exposures) Frequency : acceptance, timer maintenance, annual

IAEA Where to Get More Information 15.3: Optimization of protection in radiography7 Quality Control in Diagnostic Imaging, Gray JE, Winkler NT, Stears J, Frank ED. Available at no cost.