title: The Application and Distribution of Magnetic Field Modulation in the Detection Apertures of X-band EPR Cavities for In Vivo Tooth Dosimetry.
abstract: In vivo electron paramagnetic resonance tooth dosimetry could be a practical and ideal tool for quick mass triage of victims in the rescue following a disaster event involving irradiation radiation. Magnetic field modulation is an important issue to improve the sensitivity of X-band in vivo tooth dosimetry. We designed a couple of trapezoidal modulation coil sets fixed on the magnet poles that could be used to apply sufficient magnet field modulation into the detection aperture of the resonant cavity. Measurements of irradiated teeth with such coil sets demonstrated significant radiation-induced signals. The modulation generation efficiencies and magnetic field distributions in apertures with different cavity geometries were analytically calculated, simulated by a finite element method and evaluated by measurements of a free radical point sample to study the influences caused by the geometries of the apertures and other factors.
authors.affiliation: Beijing Key Laboratory of Radiation Biology (No. BZ0325), Beijing Institute of Radiation Medicine, No. 27 Tai Ping Road, Beijing, China.
authors.forename: Junwang
authors.initials: J
authors.lastname: Guo
authors.affiliation: Beijing Key Laboratory of Radiation Biology (No. BZ0325), Beijing Institute of Radiation Medicine, No. 27 Tai Ping Road, Beijing, China.
authors.forename: Jierui
authors.initials: J
authors.lastname: Zou
authors.affiliation: Beijing Key Laboratory of Radiation Biology (No. BZ0325), Beijing Institute of Radiation Medicine, No. 27 Tai Ping Road, Beijing, China.
authors.forename: Guofu
authors.initials: G
authors.lastname: Dong
authors.affiliation: Beijing Key Laboratory of Radiation Biology (No. BZ0325), Beijing Institute of Radiation Medicine, No. 27 Tai Ping Road, Beijing, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Ma
authors.affiliation: Beijing Key Laboratory of Radiation Biology (No. BZ0325), Beijing Institute of Radiation Medicine, No. 27 Tai Ping Road, Beijing, China.
authors.forename: Jianbo
authors.initials: J
authors.lastname: Cong
authors.affiliation: Beijing Key Laboratory of Radiation Biology (No. BZ0325), Beijing Institute of Radiation Medicine, No. 27 Tai Ping Road, Beijing, China.
authors.forename: Kai
authors.initials: K
authors.lastname: Fan
authors.affiliation: Beijing Key Laboratory of Radiation Biology (No. BZ0325), Beijing Institute of Radiation Medicine, No. 27 Tai Ping Road, Beijing, China.
authors.forename: Guoshan
authors.initials: G
authors.lastname: Yang
authors.affiliation: Beijing Key Laboratory of Radiation Biology (No. BZ0325), Beijing Institute of Radiation Medicine, No. 27 Tai Ping Road, Beijing, China wuk315@163.com.
authors.forename: Ke
authors.initials: K
authors.lastname: Wu
mesh_terms: D001681:Biological Assay / Q000295:instrumentation*; D017076:Computer-Aided Design; D055119:Elastic Modulus; D004578:Electron Spin Resonance Spectroscopy / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006801:Humans; D060526:Magnetic Fields; D008280:Magnetics / Q000295:instrumentation*; D008872:Microwaves; D008904:Miniaturization; D011874:Radiometry / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014070:Tooth / Q000737:chemistry* / Q000528:radiation effects*; D014159:Transducers