1: Radiat Meas.  2002 Dec;35(6):603-8.  

Sensitivity of whole human teeth to fast neutrons and gamma-rays estimated by
L-band EPR spectroscopy.

Zdravkova M, Denis JM, Gallez B, Debuyst R.

Laboratory of Biomedical Magnetic Resonance, Universite catholique de Louvain,
Brussels, Belgium.

This paper reports the first attempt to use L-band spectroscopy for estimating
the sensitivity of whole teeth to fast neutrons and gamma-rays. Three teeth were
successively irradiated first with fast neutrons with a wide energy spectrum
(mean energy around 30 MeV) up to approximately 160 Gy and then with gamma-rays
up to approximately 14 Gy. After each irradiation, L-band (approximately 1 GHz)
EPR spectra of each whole tooth surrounded by the surface-coil resonator were
recorded, yielding a single composite line principally due to CO2- and native
radicals. The sensitivities are estimated by the slopes of the linear dose
response curves of the dosimetric CO2- radicals. The ratios of the gamma/neutron
sensitivities were found to be in the range 8-9 (+/- 2) for the three teeth.
c2002 Elsevier Science Ltd. All rights reserved.

PMID: 12455519 [PubMed - indexed for MEDLINE]