title: Response to Zeman.
authors.affiliation: Department of Radiation Oncology, University of Maryland School of Medicine, 10 S. Pine Street, MSTF 5-00A, Baltimore, MD 21201.
authors.forename: Abdul M
authors.initials: AM
authors.lastname: Kazi
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: MacVittie
authors.forename: Giovanni
authors.initials: G
authors.lastname: Lasio
authors.forename: Wei
authors.initials: W
authors.lastname: Lu
authors.forename: Karl L
authors.initials: KL
authors.lastname: Prado
mesh_terms: D000818:Animals; D006283:Health Physics; D011874:Radiometry / Q000592:standards*; D012958:Societies, Scientific