Monte Carlo determination of the lead equivalent for Syrian building bricks for diagnostic x ray.
The uncertainty band associated with the transmission curve for 100 kVp x ray in lead was determined using Monte Carlo methods and the sensitivity analysis approach. All uncertainty sources (statistical, systematical and the uncertainties arising from the diversity of x-ray tubes) were taken into account. The transmission of 100 kVp x ray in Syrian building bricks was then computed together with the uncertainty associated with it. Finally, the lead equivalent thicknesses for 10, 15, and 20-cm-thick bricks were estimated. The results are in good agreement with experimental results. This study recommends, as a rule of thumb, to use the lead-equivalent values of 0.5, 0.75, and 1.0 mm for the 10, 15, and 20-cm-thick building bricks, respectively.
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Atomic Energy Commission of Syria, P.O. Box 6091, Damascus, Syria. atomic@aec.org.sy
Kharita
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D003252:Construction Materials; D007854:Lead; D008422:Materials Testing / Q000379:methods*; D015233:Models, Statistical; D009010:Monte Carlo Method; D011829:Radiation Dosage; D011832:Radiation Injuries / Q000209:etiology / Q000517:prevention & control; D011835:Radiation Protection / Q000295:instrumentation* / Q000379:methods*; D011859:Radiography / Q000009:adverse effects; D011874:Radiometry / Q000379:methods*; D015203:Reproducibility of Results; D012542:Scattering, Radiation; D012680:Sensitivity and Specificity; D013593:Syria
D007854:Lead