Methods and apparatus for post-exposure determination of...

Electricity: measuring and testing – Particle precession resonance – Using an electron resonance spectrometer system

Reexamination Certificate

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Reexamination Certificate

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07084628

ABSTRACT:
The instant invention provides in-vivo methods and apparatus for radiation dosimetry assessment in individuals exposed to potentially harmful radiation, based on measurements in-situ of the teeth. The in vivo dosimetry assessment methods and apparatus utilize electron paramagnetic resonance (EPR) techniques; and employ an apparatus comprising an integrated EPR spectrometer system, an ergonomic magnet and a constructed resonator structure. In various aspects, the dosimetry assessment apparatus is configured to be easily portable and withstand potentially adverse mechanical effects of transportation and deployment in the field. The apparatus also is configured with a power supply that is compatible with both conventional AC line voltages and/or other sources of power suitable for field conditions; and may be easily operated by minimally trained technicians to quickly generate a readout of estimated radiation exposure dose.

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Miyake M et al., “In vivo EPR dosimetry of accidental exposures to radiation: experimental results indicating the feasibility of practical use in human subjects”, Appl Radiat Isot 52: pp. 1031-1038, (2000).
Haskell EH et al., “Electron Paramagnetic Resonance Techniques and Space Biodosimetry”, Radiat Res 148: pp. S51-S59, (1997).
Oka T et al., “A High-sensitivity Portable Spectrometer for ESR Dosimetry”, Appl Radiat Isot 47, No. 11/12: pp. 1589-1594, (1996).

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