title: X-Band Rapid-Scan Electron Paramagnetic Resonance of Radiation-Induced Defects in Tooth Enamel.
abstract: X-band rapid-scan electron paramagnetic resonance (EPR) spectra from tooth enamel samples irradiated with doses of 0.5, 1 and 10 Gy had substantially improved signal-to-noise relative to conventional continuous wave EPR. The radiation-induced signal in a 60 mg of a tooth enamel sample irradiated with a 0.5 Gy dose was readily characterized in spectra recorded with 34 min data acquisition times. The coefficient of variance of the calculated dose for a 1 Gy irradiated sample, based on simulation of the first-derivative spectra for three replicates as the sum of native and radiation-induced signals, was 3.9% for continuous wave and 0.4% for rapid scan.
authors.affiliation: a  Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado 80208; and.
authors.forename: Zhelin
authors.initials: Z
authors.lastname: Yu
authors.affiliation: b  Naval Dosimetry Center, Bethesda, Maryland 20889.
authors.forename: Alexander
authors.initials: A
authors.lastname: Romanyukha
authors.affiliation: a  Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado 80208; and.
authors.forename: Sandra S
authors.initials: SS
authors.lastname: Eaton
authors.affiliation: a  Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado 80208; and.
authors.forename: Gareth R
authors.initials: GR
authors.lastname: Eaton
mesh_terms: D003743:Dental Enamel / Q000473:pathology / Q000503:physiopathology / Q000528:radiation effects*; D004307:Dose-Response Relationship, Radiation; D004578:Electron Spin Resonance Spectroscopy; D006801:Humans; D008963:Molar / Q000503:physiopathology / Q000528:radiation effects*; D011829:Radiation Dosage