British Journal of Radiology · 1974 · 10 citations · 1 references
MedicineNuclear MedicineRadiologyRadiation DosimetryRadiation MeasurementRadiation PhysicsAbsorbed DoseElectron DosimetryPhoton DosimetryRadiation Dose MeasurementRadiation SpectroscopyRadioactive DecayBeta Radiation DosimetryBeta-emitting RadionuclidesInternal Radiation DosimetryLow-energy Photon DosimetryRadiation Dose AssessmentRadionuclide AnalysisRadionuclide KineticsSpecific Absorbed Fraction
Methods have been developed for determining the absorbed fraction in blood for low-energy photons, monoenergetic electrons and β spectra emitted by radionuclides uniformly distributed within it. The absorbed dose to blood calculated on the assumption that all non-penetrating radiations are totally absorbed is shown to be overestimated by up to more than 50 per cent for β emitters and by up to greater than 20 per cent for nuclides having a large dose contribution from conversion electrons.
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