Medical Physics · 1989 · 10 citations · 0 references
EngineeringNuclear EngineeringNuclear MedicineRadiation DosimetryRadiation MeasurementRadiation ShieldingCharged Particle ShieldingElectron DosimetryLead ShieldingPhantom DosimetryShielding DesignShielding MaterialsIntensity ReductionLead AttenuationLead Shielding MaterialsPatient Dose ReductionRadiation Transmission Through LeadReduction IntensityShielding GeometryShielding Thickness Calculations
The relative percent intensity reduction by lead (Pb) of 5 MeV electrons produced by Siemens Mevatron 77/74 for 5 cm diameter, 10 X 10, 15 X 15, and 20 X 20 cm2 cones both with and without buildup is measured. The thickness of lead (Pb) required to attenuate the intensity of the primary electron beam to 95% and 98% depends upon the cone size and upon the depth in phantom at which transmission measurements are made.