title: Survey of compliance with European acceptability criteria for HVL and AEC.
abstract: Half value layer (HVL) was measured for 226 general radiographic X-ray tube assemblies at 80 kV and for 53 dental X-ray tube assemblies at 70 kV, and evaluated by the previous (1997) and the new draft of European acceptability criteria (2009) for HVL as adopted from the IEC collateral standards. Fourteen per cent of the tested general radiography X-ray tube assemblies were subject to readjustment by the new criteria. In routine quality control tests, receptor entrance dose was estimated for 54 AEC systems by using post-exposure mAs values, taking into account the measured tube output at different tube potentials, HVL and estimated scattering for 10, 15 and 21 cm PMMA phantom. Receptor dose (third quartile) varied from 6.4 μGy at 60 kV to 3.8 μGy at 125 kV. The results correspond well to the draft criteria for maximum receptor dose of 10 μGy and for the patient thickness compensation.
authors.affiliation: Training Centre of Medical Physics, University of Tartu, Tähe 4, Tartu 51010, Estonia. kalle.kepler@ut.ee
authors.forename: K
authors.initials: K
authors.lastname: Kepler
authors.forename: A
authors.initials: A
authors.lastname: Vladimirov
mesh_terms: D004867:Equipment Design; D005060:Europe; D006801:Humans; D019047:Phantoms, Imaging; D011786:Quality Control; D011835:Radiation Protection / Q000379:methods; D011859:Radiography / Q000379:methods; D011861:Radiography, Dental / Q000379:methods; D011871:Radiology / Q000379:methods / Q000592:standards*; D011874:Radiometry / Q000379:methods; D015203:Reproducibility of Results; D012542:Scattering, Radiation; D014965:X-Rays