Abstract
SummaryThe bremsstrahlung efficiency (x-ray photon output/μc) of beagle bones labelled with 90Sr + 90Y has been determined relative to the efficiency in water. The bremsstrahlung counting rate between 50 and 1000 kev from the individual bones was compared to that from a water-filled standard using an 8 × 4 in. NaI(Tl) crystal. Efficiencies were found to vary linearly with both the density and the computed effective atomic number (Zeff) of the fresh, intact bone. The empirical expressions developed from the data, relating relative bremsstrahlung efficiency to Zeff and density were, efficiency = 0·37 + 0·63 (density) and, efficiency = 0·215 + 0·119 (Zeff). For intact beagle bones averaging 1·48 g/cm3 (Zeff = 9·1), efficiencies were about 1·3 times that of a water-filled phantom. No great effects on efficiency were observed which could be ascribed to uniform versus nonuniform 90Sr labelling or to bone size.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: International journal of radiation biology and related studies in physics, chemistry, and medicine
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
