title: Evaluation of a high dose to a finger from a 60Co accident.
abstract: Electron spin resonance and fluorescence in situ hybridization were used to evaluate the dose to the finger of a worker who accidentally touched a radiotherapy 60Co therapy source in November 1995. In September 1999, the middle finger was amputated. We estimated the dose to the bone of the finger to be 6.4 +/- 0.5 Gy using the electron spin resonance additive dose method and a corrected dose of about 20 +/- 3 Gy could be inferred by translocation analysis in peripheral lymphocytes using the fluorescence in situ hybridization method. This retrospective dosimetry was performed for the victim 4 y after the accident, but the compatibility of the results obtained by physical and biological methods reinforce their validity, although in the case of partial-body exposure the biological method has limitations and demonstrates the need to find appropriate correction factors.
authors.affiliation: Departamento de Física e Matemática, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av Bandeirantes 3900, 14040-901, Ribeirão Preto, SP, Brazil.
authors.forename: Angela
authors.initials: A
authors.lastname: Kinoshita
authors.forename: Carmen Sandra Guzman
authors.initials: CS
authors.lastname: Calcina
authors.forename: Elza T
authors.initials: ET
authors.lastname: Sakamoto-Hojo
authors.forename: Marjori L
authors.initials: ML
authors.lastname: Camparato
authors.forename: Cesar
authors.initials: C
authors.lastname: Picon
authors.forename: Oswaldo
authors.initials: O
authors.lastname: Baffa
mesh_terms: D000328:Adult; D000671:Amputation, Surgical; D001133:Bones of Upper Extremity / Q000737:chemistry / Q000528:radiation effects*; D002478:Cells, Cultured; D003037:Cobalt Radioisotopes / Q000009:adverse effects*; D004578:Electron Spin Resonance Spectroscopy / Q000379:methods; D005383:Finger Injuries / Q000209:etiology; D005385:Fingers / Q000528:radiation effects* / Q000601:surgery; D005500:Follow-Up Studies; D006282:Health Personnel; D006801:Humans; D017404:In Situ Hybridization, Fluorescence / Q000379:methods; D066298:In Vitro Techniques; D008214:Lymphocytes / Q000097:blood / Q000473:pathology / Q000528:radiation effects; D008297:Male; D016273:Occupational Exposure / Q000032:analysis*; D011832:Radiation Injuries / Q000209:etiology; D011834:Radiation Monitoring / Q000295:instrumentation / Q000379:methods*; D018788:Radioactive Hazard Release; D011874:Radiometry / Q000379:methods*; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D014178:Translocation, Genetic / Q000528:radiation effects
chemical_list: D003037:Cobalt Radioisotopes