title: Radiation does from medical in-vivo prompt gamma-ray activation using a mobile nuclear reactor.
abstract: A method of medical diagnosis of toxic elements, using a neutron beam from a mobile nuclear reactor to perform partial-body in-vivo prompt gamma-ray activation technique, has been developed. Both neutron and gamma-ray dose equivalents in an irradiated phantom and around medical researchers were measured and evaluated. Neutron flux at various kinetic energies was measured using an activation foil technique, and the neutron dose equivalents at tissues of risk inside the irradiated phantom were calculated by neutron transport code. Gamma-ray dose equivalents inside the irradiated phantom and around the nuclear reactor were measured by thermoluminescent dosimeters. The risk associated with the neutron and gamma radiation dose equivalents received by both the irradiated phantom and medical researchers were evaluated in detail. The radiation safety of the in-vivo medical diagnosis using the mobile nuclear reactor, under the context of radiation protection guidelines, is discussed.
authors.affiliation: Institute of Nuclear Science, National Tsing Hua University, Hsinchu, Taiwan, Republic of China.
authors.forename: C
authors.initials: C
authors.lastname: Chung
authors.forename: C P
authors.initials: CP
authors.lastname: Chen
authors.forename: P S
authors.initials: PS
authors.lastname: Chang
mesh_terms: D000201:Activation Analysis / Q000295:instrumentation / Q000379:methods*; D001822:Body Burden; D006801:Humans; D009688:Nuclear Reactors; D011041:Poisoning / Q000175:diagnosis*; D011829:Radiation Dosage; D013997:Time Factors