title: Dosimetry calculations for concentric cylindrical source and target regions with application to blood vessels.
abstract: Geometry factors are derived for source and target regions consisting of concentric circular cylinders and cylindrical shells. Line-source kernels are derived from point kernels for monoenergetic electrons and photons. The geometry factors and line-source kernels are then combined to yield electron and photon absorbed fractions that, in turn, are used to calculate conversion factors for dose rates in blood vessel walls from radionuclides in the blood. Example calculations are presented for selected radionuclides and for blood vessels of three representative sizes.
authors.affiliation: Nuclear Engineering Department, Kansas State University, Manhattan 66502-2503.
authors.forename: R E
authors.initials: RE
authors.lastname: Faw
authors.forename: J K
authors.initials: JK
authors.lastname: Shultis
mesh_terms: D001693:Biological Transport, Active; D001808:Blood Vessels / Q000528:radiation effects*; D004579:Electron Transport; D006801:Humans; D008954:Models, Biological; D011829:Radiation Dosage